/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/watermelon.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 19:04:56,268 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 19:04:56,271 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 19:04:56,307 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 19:04:56,307 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 19:04:56,310 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 19:04:56,313 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 19:04:56,318 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 19:04:56,320 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 19:04:56,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 19:04:56,325 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 19:04:56,326 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 19:04:56,327 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 19:04:56,329 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 19:04:56,330 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 19:04:56,332 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 19:04:56,334 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 19:04:56,335 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 19:04:56,337 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 19:04:56,342 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 19:04:56,343 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 19:04:56,345 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 19:04:56,346 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 19:04:56,348 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 19:04:56,353 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 19:04:56,363 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 19:04:56,373 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 19:04:56,373 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 19:04:56,377 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 19:04:56,392 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 19:04:56,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 19:04:56,395 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 19:04:56,395 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 19:04:56,395 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 19:04:56,395 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 19:04:56,396 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 19:04:56,396 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 19:04:56,396 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 19:04:56,396 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 19:04:56,397 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 19:04:56,397 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 19:04:56,397 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 19:04:56,397 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 19:04:56,397 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 19:04:56,397 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 19:04:56,397 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 19:04:56,398 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 19:04:56,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 19:04:56,398 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 19:04:56,398 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 19:04:56,399 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 19:04:56,399 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 19:04:56,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 19:04:56,685 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 19:04:56,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 19:04:56,688 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 19:04:56,689 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 19:04:56,689 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/watermelon.c [2021-05-02 19:04:56,747 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0e61fca4/b304647e1bd3474b8fd60b9cb006f48a/FLAG11f3ae70a [2021-05-02 19:04:57,095 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 19:04:57,096 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/watermelon.c [2021-05-02 19:04:57,102 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0e61fca4/b304647e1bd3474b8fd60b9cb006f48a/FLAG11f3ae70a [2021-05-02 19:04:57,517 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0e61fca4/b304647e1bd3474b8fd60b9cb006f48a [2021-05-02 19:04:57,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 19:04:57,521 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 19:04:57,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 19:04:57,526 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 19:04:57,529 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 19:04:57,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 07:04:57" (1/1) ... [2021-05-02 19:04:57,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@796418ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:04:57, skipping insertion in model container [2021-05-02 19:04:57,531 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 07:04:57" (1/1) ... [2021-05-02 19:04:57,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 19:04:57,552 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 19:04:57,657 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/watermelon.c[373,386] [2021-05-02 19:04:57,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 19:04:57,676 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 19:04:57,684 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/watermelon.c[373,386] [2021-05-02 19:04:57,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 19:04:57,702 INFO L208 MainTranslator]: Completed translation [2021-05-02 19:04:57,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:04:57 WrapperNode [2021-05-02 19:04:57,703 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 19:04:57,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 19:04:57,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 19:04:57,708 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 19:04:57,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:04:57" (1/1) ... [2021-05-02 19:04:57,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:04:57" (1/1) ... [2021-05-02 19:04:57,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:04:57" (1/1) ... [2021-05-02 19:04:57,747 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:04:57" (1/1) ... [2021-05-02 19:04:57,751 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:04:57" (1/1) ... [2021-05-02 19:04:57,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:04:57" (1/1) ... [2021-05-02 19:04:57,773 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:04:57" (1/1) ... [2021-05-02 19:04:57,778 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 19:04:57,779 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 19:04:57,779 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 19:04:57,779 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 19:04:57,780 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:04:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 19:04:57,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 19:04:57,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 19:04:57,858 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 19:04:57,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 19:04:57,858 INFO L138 BoogieDeclarations]: Found implementation of procedure correct_version [2021-05-02 19:04:57,858 INFO L138 BoogieDeclarations]: Found implementation of procedure student_version [2021-05-02 19:04:57,859 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 19:04:57,859 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 19:04:57,859 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 19:04:57,859 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 19:04:57,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 19:04:57,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-05-02 19:04:57,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 19:04:57,860 INFO L130 BoogieDeclarations]: Found specification of procedure correct_version [2021-05-02 19:04:57,860 INFO L130 BoogieDeclarations]: Found specification of procedure student_version [2021-05-02 19:04:57,860 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 19:04:57,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 19:04:57,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 19:04:57,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 19:04:57,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 19:04:57,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 19:04:57,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 19:04:58,139 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 19:04:58,139 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-02 19:04:58,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 07:04:58 BoogieIcfgContainer [2021-05-02 19:04:58,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 19:04:58,141 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 19:04:58,141 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 19:04:58,142 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 19:04:58,144 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 07:04:58" (1/1) ... [2021-05-02 19:04:58,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 07:04:58 BasicIcfg [2021-05-02 19:04:58,158 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 19:04:58,159 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 19:04:58,159 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 19:04:58,161 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 19:04:58,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 07:04:57" (1/4) ... [2021-05-02 19:04:58,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48ba6f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 07:04:58, skipping insertion in model container [2021-05-02 19:04:58,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:04:57" (2/4) ... [2021-05-02 19:04:58,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48ba6f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 07:04:58, skipping insertion in model container [2021-05-02 19:04:58,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 07:04:58" (3/4) ... [2021-05-02 19:04:58,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48ba6f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 07:04:58, skipping insertion in model container [2021-05-02 19:04:58,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 07:04:58" (4/4) ... [2021-05-02 19:04:58,164 INFO L111 eAbstractionObserver]: Analyzing ICFG watermelon.cJordan [2021-05-02 19:04:58,168 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 19:04:58,171 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 19:04:58,184 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 19:04:58,198 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 19:04:58,198 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 19:04:58,198 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 19:04:58,198 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 19:04:58,198 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 19:04:58,198 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 19:04:58,198 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 19:04:58,199 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 19:04:58,209 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 29 states have internal predecessors, (38), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-02 19:04:58,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-02 19:04:58,215 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:04:58,215 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:04:58,215 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:04:58,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:04:58,220 INFO L82 PathProgramCache]: Analyzing trace with hash -405319789, now seen corresponding path program 1 times [2021-05-02 19:04:58,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:04:58,226 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833873421] [2021-05-02 19:04:58,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:04:58,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:04:58,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:04:58,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:04:58,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:04:58,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:04:58,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-05-02 19:04:58,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:04:58,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:04:58,573 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:04:58,574 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833873421] [2021-05-02 19:04:58,574 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833873421] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 19:04:58,574 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 19:04:58,574 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-05-02 19:04:58,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876131916] [2021-05-02 19:04:58,577 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-02 19:04:58,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:04:58,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-02 19:04:58,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-05-02 19:04:58,587 INFO L87 Difference]: Start difference. First operand has 39 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 29 states have internal predecessors, (38), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 9 states have internal predecessors, (17), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:04:59,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:04:59,444 INFO L93 Difference]: Finished difference Result 64 states and 73 transitions. [2021-05-02 19:04:59,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-02 19:04:59,446 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 9 states have internal predecessors, (17), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2021-05-02 19:04:59,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:04:59,454 INFO L225 Difference]: With dead ends: 64 [2021-05-02 19:04:59,454 INFO L226 Difference]: Without dead ends: 42 [2021-05-02 19:04:59,456 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 597.9ms TimeCoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2021-05-02 19:04:59,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-05-02 19:04:59,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2021-05-02 19:04:59,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 30 states have internal predecessors, (34), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-05-02 19:04:59,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2021-05-02 19:04:59,487 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 25 [2021-05-02 19:04:59,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:04:59,487 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2021-05-02 19:04:59,487 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 9 states have internal predecessors, (17), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:04:59,487 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2021-05-02 19:04:59,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-05-02 19:04:59,489 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:04:59,489 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:04:59,489 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 19:04:59,489 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:04:59,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:04:59,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1050440486, now seen corresponding path program 1 times [2021-05-02 19:04:59,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:04:59,490 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916485288] [2021-05-02 19:04:59,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:04:59,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:04:59,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:04:59,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:04:59,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:04:59,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:04:59,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-05-02 19:04:59,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:04:59,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:04:59,594 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:04:59,594 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916485288] [2021-05-02 19:04:59,594 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916485288] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 19:04:59,594 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 19:04:59,594 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 19:04:59,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300483317] [2021-05-02 19:04:59,595 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 19:04:59,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:04:59,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 19:04:59,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 19:04:59,596 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-02 19:04:59,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:04:59,688 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2021-05-02 19:04:59,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 19:04:59,689 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2021-05-02 19:04:59,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:04:59,690 INFO L225 Difference]: With dead ends: 42 [2021-05-02 19:04:59,690 INFO L226 Difference]: Without dead ends: 42 [2021-05-02 19:04:59,690 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 19:04:59,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-05-02 19:04:59,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2021-05-02 19:04:59,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 29 states have (on average 1.206896551724138) internal successors, (35), 31 states have internal predecessors, (35), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-05-02 19:04:59,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2021-05-02 19:04:59,696 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 27 [2021-05-02 19:04:59,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:04:59,696 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2021-05-02 19:04:59,696 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-02 19:04:59,696 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2021-05-02 19:04:59,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-05-02 19:04:59,697 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:04:59,697 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:04:59,697 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 19:04:59,697 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:04:59,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:04:59,698 INFO L82 PathProgramCache]: Analyzing trace with hash -525796213, now seen corresponding path program 1 times [2021-05-02 19:04:59,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:04:59,698 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259212698] [2021-05-02 19:04:59,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:04:59,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:04:59,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:04:59,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:04:59,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:04:59,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:04:59,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-05-02 19:04:59,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:04:59,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:04:59,798 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:04:59,798 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259212698] [2021-05-02 19:04:59,798 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259212698] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 19:04:59,799 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 19:04:59,799 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 19:04:59,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049576564] [2021-05-02 19:04:59,799 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 19:04:59,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:04:59,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 19:04:59,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 19:04:59,812 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:04:59,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:04:59,897 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2021-05-02 19:04:59,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 19:04:59,897 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2021-05-02 19:04:59,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:04:59,899 INFO L225 Difference]: With dead ends: 43 [2021-05-02 19:04:59,900 INFO L226 Difference]: Without dead ends: 43 [2021-05-02 19:04:59,900 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 19:04:59,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-05-02 19:04:59,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2021-05-02 19:04:59,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 30 states have (on average 1.2) internal successors, (36), 32 states have internal predecessors, (36), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-05-02 19:04:59,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2021-05-02 19:04:59,907 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 27 [2021-05-02 19:04:59,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:04:59,907 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2021-05-02 19:04:59,907 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:04:59,907 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2021-05-02 19:04:59,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-02 19:04:59,908 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:04:59,908 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:04:59,908 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-02 19:04:59,908 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:04:59,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:04:59,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1887910336, now seen corresponding path program 1 times [2021-05-02 19:04:59,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:04:59,909 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118795357] [2021-05-02 19:04:59,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:04:59,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:04:59,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:04:59,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:04:59,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:04:59,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:04:59,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-05-02 19:04:59,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:04:59,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:04:59,973 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:04:59,973 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118795357] [2021-05-02 19:04:59,973 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118795357] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:04:59,973 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626225312] [2021-05-02 19:04:59,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:00,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:00,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjunts are in the unsatisfiable core [2021-05-02 19:05:00,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:05:00,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:00,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:00,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:00,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:00,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:00,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:00,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:00,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:00,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:00,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:00,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:00,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:00,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 19:05:00,272 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626225312] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 19:05:00,272 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-05-02 19:05:00,272 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2021-05-02 19:05:00,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652494348] [2021-05-02 19:05:00,273 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 19:05:00,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:05:00,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 19:05:00,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-05-02 19:05:00,274 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:00,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:05:00,395 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2021-05-02 19:05:00,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 19:05:00,395 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2021-05-02 19:05:00,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:05:00,396 INFO L225 Difference]: With dead ends: 50 [2021-05-02 19:05:00,396 INFO L226 Difference]: Without dead ends: 45 [2021-05-02 19:05:00,396 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 78.2ms TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-05-02 19:05:00,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-05-02 19:05:00,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2021-05-02 19:05:00,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 32 states have internal predecessors, (35), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-05-02 19:05:00,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2021-05-02 19:05:00,400 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 29 [2021-05-02 19:05:00,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:05:00,400 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2021-05-02 19:05:00,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:00,401 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2021-05-02 19:05:00,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-02 19:05:00,401 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:05:00,401 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:05:00,618 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:00,618 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:05:00,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:05:00,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1183994556, now seen corresponding path program 1 times [2021-05-02 19:05:00,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:05:00,619 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230112093] [2021-05-02 19:05:00,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:05:00,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:00,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:05:00,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:00,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:05:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:00,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-05-02 19:05:00,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:00,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:00,698 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:05:00,698 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230112093] [2021-05-02 19:05:00,698 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230112093] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:00,698 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698763836] [2021-05-02 19:05:00,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:00,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:00,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-02 19:05:00,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:05:00,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:00,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:00,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:00,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:00,875 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698763836] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:00,875 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:05:00,875 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2021-05-02 19:05:00,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140012249] [2021-05-02 19:05:00,876 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 19:05:00,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:05:00,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 19:05:00,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-05-02 19:05:00,878 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 19:05:01,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:05:01,004 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2021-05-02 19:05:01,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 19:05:01,005 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2021-05-02 19:05:01,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:05:01,006 INFO L225 Difference]: With dead ends: 45 [2021-05-02 19:05:01,006 INFO L226 Difference]: Without dead ends: 45 [2021-05-02 19:05:01,006 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 76.7ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-05-02 19:05:01,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-05-02 19:05:01,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2021-05-02 19:05:01,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 32 states have (on average 1.15625) internal successors, (37), 34 states have internal predecessors, (37), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-05-02 19:05:01,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2021-05-02 19:05:01,010 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 29 [2021-05-02 19:05:01,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:05:01,010 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2021-05-02 19:05:01,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 19:05:01,010 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2021-05-02 19:05:01,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-05-02 19:05:01,011 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:05:01,011 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:05:01,216 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:01,217 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:05:01,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:05:01,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1942557629, now seen corresponding path program 2 times [2021-05-02 19:05:01,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:05:01,217 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946430370] [2021-05-02 19:05:01,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:05:01,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:01,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:05:01,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:01,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:05:01,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:01,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-05-02 19:05:01,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:01,373 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 19:05:01,373 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:05:01,374 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946430370] [2021-05-02 19:05:01,374 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946430370] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 19:05:01,374 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 19:05:01,374 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-02 19:05:01,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448508769] [2021-05-02 19:05:01,374 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 19:05:01,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:05:01,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 19:05:01,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-05-02 19:05:01,376 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:01,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:05:01,580 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2021-05-02 19:05:01,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 19:05:01,580 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2021-05-02 19:05:01,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:05:01,581 INFO L225 Difference]: With dead ends: 47 [2021-05-02 19:05:01,581 INFO L226 Difference]: Without dead ends: 44 [2021-05-02 19:05:01,581 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 162.7ms TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-05-02 19:05:01,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-05-02 19:05:01,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-05-02 19:05:01,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 32 states have (on average 1.125) internal successors, (36), 34 states have internal predecessors, (36), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-05-02 19:05:01,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2021-05-02 19:05:01,585 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 31 [2021-05-02 19:05:01,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:05:01,585 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2021-05-02 19:05:01,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:01,585 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2021-05-02 19:05:01,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-05-02 19:05:01,586 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:05:01,586 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:05:01,586 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-02 19:05:01,586 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:05:01,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:05:01,587 INFO L82 PathProgramCache]: Analyzing trace with hash -2136669557, now seen corresponding path program 1 times [2021-05-02 19:05:01,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:05:01,587 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672451511] [2021-05-02 19:05:01,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:05:01,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:01,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:05:01,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:01,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:05:01,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:01,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-05-02 19:05:01,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:01,667 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 19:05:01,667 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:05:01,668 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672451511] [2021-05-02 19:05:01,668 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672451511] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:01,668 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676388322] [2021-05-02 19:05:01,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:01,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:01,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-02 19:05:01,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:05:01,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:01,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:01,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:01,823 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 19:05:01,823 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676388322] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:01,825 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:05:01,825 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 9 [2021-05-02 19:05:01,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621071670] [2021-05-02 19:05:01,826 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 19:05:01,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:05:01,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 19:05:01,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-05-02 19:05:01,838 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 19:05:02,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:05:02,133 INFO L93 Difference]: Finished difference Result 50 states and 55 transitions. [2021-05-02 19:05:02,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 19:05:02,134 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 35 [2021-05-02 19:05:02,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:05:02,135 INFO L225 Difference]: With dead ends: 50 [2021-05-02 19:05:02,135 INFO L226 Difference]: Without dead ends: 50 [2021-05-02 19:05:02,135 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 179.8ms TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-05-02 19:05:02,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-05-02 19:05:02,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2021-05-02 19:05:02,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 37 states have (on average 1.135135135135135) internal successors, (42), 39 states have internal predecessors, (42), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-05-02 19:05:02,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2021-05-02 19:05:02,143 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 35 [2021-05-02 19:05:02,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:05:02,143 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2021-05-02 19:05:02,143 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 19:05:02,144 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2021-05-02 19:05:02,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-02 19:05:02,148 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:05:02,149 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:05:02,360 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:02,361 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:05:02,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:05:02,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1468224207, now seen corresponding path program 1 times [2021-05-02 19:05:02,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:05:02,362 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029504993] [2021-05-02 19:05:02,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:05:02,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:02,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:05:02,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:02,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:05:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:02,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-05-02 19:05:02,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:02,459 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 19:05:02,459 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:05:02,459 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029504993] [2021-05-02 19:05:02,459 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029504993] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:02,459 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171546417] [2021-05-02 19:05:02,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:02,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 6 conjunts are in the unsatisfiable core [2021-05-02 19:05:02,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:05:02,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:02,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:02,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:02,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:02,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:02,625 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 19:05:02,625 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171546417] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:02,626 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:05:02,626 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2021-05-02 19:05:02,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145910720] [2021-05-02 19:05:02,626 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 19:05:02,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:05:02,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 19:05:02,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-05-02 19:05:02,627 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-02 19:05:02,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:05:02,866 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2021-05-02 19:05:02,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 19:05:02,866 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 37 [2021-05-02 19:05:02,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:05:02,867 INFO L225 Difference]: With dead ends: 56 [2021-05-02 19:05:02,867 INFO L226 Difference]: Without dead ends: 56 [2021-05-02 19:05:02,867 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 204.0ms TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-05-02 19:05:02,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-05-02 19:05:02,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2021-05-02 19:05:02,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 40 states have (on average 1.15) internal successors, (46), 42 states have internal predecessors, (46), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-05-02 19:05:02,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2021-05-02 19:05:02,871 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 37 [2021-05-02 19:05:02,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:05:02,871 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2021-05-02 19:05:02,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-02 19:05:02,871 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2021-05-02 19:05:02,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-02 19:05:02,871 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:05:02,872 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:05:03,087 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:03,087 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:05:03,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:05:03,087 INFO L82 PathProgramCache]: Analyzing trace with hash -339230256, now seen corresponding path program 1 times [2021-05-02 19:05:03,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:05:03,088 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130931209] [2021-05-02 19:05:03,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:05:03,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:03,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:05:03,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:03,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:05:03,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:03,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-05-02 19:05:03,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:03,243 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-05-02 19:05:03,243 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:05:03,243 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130931209] [2021-05-02 19:05:03,243 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130931209] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 19:05:03,243 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 19:05:03,243 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-05-02 19:05:03,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026378923] [2021-05-02 19:05:03,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-02 19:05:03,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:05:03,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-02 19:05:03,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-05-02 19:05:03,244 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand has 13 states, 11 states have (on average 2.272727272727273) internal successors, (25), 9 states have internal predecessors, (25), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:03,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:05:03,711 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2021-05-02 19:05:03,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-02 19:05:03,711 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.272727272727273) internal successors, (25), 9 states have internal predecessors, (25), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 37 [2021-05-02 19:05:03,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:05:03,712 INFO L225 Difference]: With dead ends: 58 [2021-05-02 19:05:03,712 INFO L226 Difference]: Without dead ends: 54 [2021-05-02 19:05:03,712 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 346.7ms TimeCoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2021-05-02 19:05:03,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-05-02 19:05:03,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2021-05-02 19:05:03,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 40 states have (on average 1.15) internal successors, (46), 42 states have internal predecessors, (46), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:05:03,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2021-05-02 19:05:03,715 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 37 [2021-05-02 19:05:03,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:05:03,715 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2021-05-02 19:05:03,716 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 11 states have (on average 2.272727272727273) internal successors, (25), 9 states have internal predecessors, (25), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:03,716 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2021-05-02 19:05:03,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-02 19:05:03,716 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:05:03,716 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:05:03,716 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-05-02 19:05:03,716 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:05:03,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:05:03,717 INFO L82 PathProgramCache]: Analyzing trace with hash -26371531, now seen corresponding path program 2 times [2021-05-02 19:05:03,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:05:03,717 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449737225] [2021-05-02 19:05:03,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:05:03,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:03,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:05:03,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:03,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:05:03,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:03,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-05-02 19:05:03,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:03,877 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:03,878 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:05:03,878 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449737225] [2021-05-02 19:05:03,878 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449737225] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:03,878 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286120049] [2021-05-02 19:05:03,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:03,932 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 19:05:03,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:05:03,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-02 19:05:03,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:05:03,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:03,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:03,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:03,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:04,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:04,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:04,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:04,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:04,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:04,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:04,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:04,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:04,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:04,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:04,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:04,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:04,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:04,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:04,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:04,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:04,172 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:04,172 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286120049] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:04,172 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:05:04,172 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 24 [2021-05-02 19:05:04,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607646114] [2021-05-02 19:05:04,173 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-02 19:05:04,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:05:04,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-02 19:05:04,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2021-05-02 19:05:04,174 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand has 24 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 23 states have internal predecessors, (50), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:04,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:05:04,647 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2021-05-02 19:05:04,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-02 19:05:04,648 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 23 states have internal predecessors, (50), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2021-05-02 19:05:04,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:05:04,648 INFO L225 Difference]: With dead ends: 61 [2021-05-02 19:05:04,649 INFO L226 Difference]: Without dead ends: 55 [2021-05-02 19:05:04,649 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 471.6ms TimeCoverageRelationStatistics Valid=203, Invalid=987, Unknown=0, NotChecked=0, Total=1190 [2021-05-02 19:05:04,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-05-02 19:05:04,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 51. [2021-05-02 19:05:04,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 41 states have internal predecessors, (44), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:05:04,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2021-05-02 19:05:04,652 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 39 [2021-05-02 19:05:04,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:05:04,652 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2021-05-02 19:05:04,652 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 23 states have internal predecessors, (50), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:04,653 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2021-05-02 19:05:04,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-02 19:05:04,653 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:05:04,653 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:05:04,869 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-05-02 19:05:04,869 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:05:04,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:05:04,869 INFO L82 PathProgramCache]: Analyzing trace with hash -315628374, now seen corresponding path program 2 times [2021-05-02 19:05:04,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:05:04,869 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237702265] [2021-05-02 19:05:04,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:05:04,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:04,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:05:04,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:04,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:05:04,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:04,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-05-02 19:05:04,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:05,036 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:05,036 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:05:05,036 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237702265] [2021-05-02 19:05:05,037 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237702265] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:05,037 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782675008] [2021-05-02 19:05:05,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:05,088 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 19:05:05,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:05:05,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-02 19:05:05,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:05:05,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:05,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:05,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:05,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:05,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:05,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:05,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:05,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:05,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:05,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:05,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:05,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:05,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:05,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:05,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:05,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:05,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:05,281 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:05,281 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782675008] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:05,281 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:05:05,281 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 24 [2021-05-02 19:05:05,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981852012] [2021-05-02 19:05:05,282 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-02 19:05:05,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:05:05,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-02 19:05:05,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2021-05-02 19:05:05,282 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand has 24 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 23 states have internal predecessors, (50), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:05,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:05:05,705 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2021-05-02 19:05:05,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-02 19:05:05,706 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 23 states have internal predecessors, (50), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2021-05-02 19:05:05,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:05:05,706 INFO L225 Difference]: With dead ends: 55 [2021-05-02 19:05:05,706 INFO L226 Difference]: Without dead ends: 51 [2021-05-02 19:05:05,707 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 467.0ms TimeCoverageRelationStatistics Valid=203, Invalid=987, Unknown=0, NotChecked=0, Total=1190 [2021-05-02 19:05:05,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-05-02 19:05:05,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2021-05-02 19:05:05,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 38 states have (on average 1.105263157894737) internal successors, (42), 40 states have internal predecessors, (42), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:05:05,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2021-05-02 19:05:05,710 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 39 [2021-05-02 19:05:05,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:05:05,710 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2021-05-02 19:05:05,710 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 23 states have internal predecessors, (50), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:05,710 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2021-05-02 19:05:05,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-05-02 19:05:05,710 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:05:05,710 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:05:05,925 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:05,925 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:05:05,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:05:05,925 INFO L82 PathProgramCache]: Analyzing trace with hash -627253872, now seen corresponding path program 3 times [2021-05-02 19:05:05,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:05:05,926 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551564879] [2021-05-02 19:05:05,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:05:05,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:05,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:05:05,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:05,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:05:05,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:06,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-05-02 19:05:06,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:06,103 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:06,104 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:05:06,104 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551564879] [2021-05-02 19:05:06,104 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551564879] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:06,104 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043565983] [2021-05-02 19:05:06,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:06,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-05-02 19:05:06,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:05:06,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 19:05:06,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:05:06,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:06,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:06,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:06,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:06,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:06,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:06,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:06,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:06,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:06,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:06,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:06,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:06,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:06,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:06,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:06,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:06,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:06,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:06,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:06,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:06,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:06,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:06,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:06,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:06,398 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:06,398 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043565983] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:06,398 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:05:06,398 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 28 [2021-05-02 19:05:06,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847748166] [2021-05-02 19:05:06,399 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-02 19:05:06,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:05:06,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-02 19:05:06,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=629, Unknown=0, NotChecked=0, Total=756 [2021-05-02 19:05:06,400 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 27 states have internal predecessors, (54), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:07,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:05:07,177 INFO L93 Difference]: Finished difference Result 68 states and 75 transitions. [2021-05-02 19:05:07,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-02 19:05:07,177 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 27 states have internal predecessors, (54), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 41 [2021-05-02 19:05:07,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:05:07,180 INFO L225 Difference]: With dead ends: 68 [2021-05-02 19:05:07,180 INFO L226 Difference]: Without dead ends: 63 [2021-05-02 19:05:07,181 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 827.5ms TimeCoverageRelationStatistics Valid=308, Invalid=1584, Unknown=0, NotChecked=0, Total=1892 [2021-05-02 19:05:07,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-05-02 19:05:07,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 53. [2021-05-02 19:05:07,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 43 states have internal predecessors, (46), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:05:07,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2021-05-02 19:05:07,191 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 41 [2021-05-02 19:05:07,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:05:07,191 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2021-05-02 19:05:07,192 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 27 states have internal predecessors, (54), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:07,192 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2021-05-02 19:05:07,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-05-02 19:05:07,193 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:05:07,193 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:05:07,400 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-05-02 19:05:07,401 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:05:07,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:05:07,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1113193838, now seen corresponding path program 3 times [2021-05-02 19:05:07,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:05:07,402 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160317507] [2021-05-02 19:05:07,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:05:07,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:07,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:05:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:07,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:05:07,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:07,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-05-02 19:05:07,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:07,610 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:07,610 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:05:07,610 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160317507] [2021-05-02 19:05:07,610 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160317507] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:07,610 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980248144] [2021-05-02 19:05:07,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:07,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-05-02 19:05:07,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:05:07,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 19:05:07,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:05:07,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:07,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:07,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:07,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:07,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:07,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:07,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:07,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:07,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:07,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:07,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:07,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:07,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:07,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:07,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:07,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:07,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:07,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:07,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:07,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:07,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:07,916 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:07,917 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980248144] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:07,917 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:05:07,917 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 28 [2021-05-02 19:05:07,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342092237] [2021-05-02 19:05:07,917 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-02 19:05:07,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:05:07,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-02 19:05:07,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=629, Unknown=0, NotChecked=0, Total=756 [2021-05-02 19:05:07,918 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 27 states have internal predecessors, (54), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:08,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:05:08,663 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2021-05-02 19:05:08,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-02 19:05:08,663 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 27 states have internal predecessors, (54), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 41 [2021-05-02 19:05:08,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:05:08,664 INFO L225 Difference]: With dead ends: 63 [2021-05-02 19:05:08,664 INFO L226 Difference]: Without dead ends: 60 [2021-05-02 19:05:08,664 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 784.5ms TimeCoverageRelationStatistics Valid=308, Invalid=1584, Unknown=0, NotChecked=0, Total=1892 [2021-05-02 19:05:08,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-05-02 19:05:08,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2021-05-02 19:05:08,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 44 states have (on average 1.1363636363636365) internal successors, (50), 46 states have internal predecessors, (50), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:05:08,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2021-05-02 19:05:08,667 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 41 [2021-05-02 19:05:08,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:05:08,667 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2021-05-02 19:05:08,667 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 27 states have internal predecessors, (54), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:08,667 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2021-05-02 19:05:08,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-05-02 19:05:08,667 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:05:08,667 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:05:08,868 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-05-02 19:05:08,868 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:05:08,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:05:08,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1908139756, now seen corresponding path program 4 times [2021-05-02 19:05:08,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:05:08,869 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453348639] [2021-05-02 19:05:08,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:05:08,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:08,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:05:08,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:08,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:05:08,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:08,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-05-02 19:05:08,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:09,056 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:09,056 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:05:09,056 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453348639] [2021-05-02 19:05:09,056 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453348639] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:09,056 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632850059] [2021-05-02 19:05:09,056 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:09,095 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 19:05:09,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:05:09,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-02 19:05:09,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:05:09,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:09,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:09,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:09,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:09,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:09,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:09,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:09,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:09,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:09,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:09,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:09,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:09,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:09,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:09,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:09,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:09,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:09,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:09,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:09,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:09,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:09,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:09,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:09,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:09,309 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:09,309 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632850059] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:09,309 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:05:09,309 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 28 [2021-05-02 19:05:09,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177241814] [2021-05-02 19:05:09,310 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-02 19:05:09,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:05:09,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-02 19:05:09,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=627, Unknown=0, NotChecked=0, Total=756 [2021-05-02 19:05:09,310 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand has 28 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 27 states have internal predecessors, (58), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:09,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:05:09,849 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2021-05-02 19:05:09,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-02 19:05:09,849 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 27 states have internal predecessors, (58), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 43 [2021-05-02 19:05:09,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:05:09,850 INFO L225 Difference]: With dead ends: 65 [2021-05-02 19:05:09,850 INFO L226 Difference]: Without dead ends: 59 [2021-05-02 19:05:09,850 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 589.7ms TimeCoverageRelationStatistics Valid=274, Invalid=1366, Unknown=0, NotChecked=0, Total=1640 [2021-05-02 19:05:09,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-05-02 19:05:09,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2021-05-02 19:05:09,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 45 states have internal predecessors, (48), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:05:09,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2021-05-02 19:05:09,852 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 43 [2021-05-02 19:05:09,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:05:09,853 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2021-05-02 19:05:09,853 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 27 states have internal predecessors, (58), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:09,853 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2021-05-02 19:05:09,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-05-02 19:05:09,853 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:05:09,853 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:05:10,073 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:10,074 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:05:10,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:05:10,074 INFO L82 PathProgramCache]: Analyzing trace with hash -721594743, now seen corresponding path program 4 times [2021-05-02 19:05:10,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:05:10,074 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246570763] [2021-05-02 19:05:10,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:05:10,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:10,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:05:10,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:10,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:05:10,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:10,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-05-02 19:05:10,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:10,247 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:10,247 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:05:10,247 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246570763] [2021-05-02 19:05:10,247 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246570763] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:10,247 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009013291] [2021-05-02 19:05:10,247 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:10,293 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 19:05:10,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:05:10,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-02 19:05:10,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:05:10,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:10,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:10,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:10,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:10,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:10,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:10,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:10,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:10,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:10,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:10,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:10,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:10,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:10,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:10,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:10,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:10,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:10,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:10,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:10,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:10,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:10,545 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:10,545 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009013291] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:10,545 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:05:10,545 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 28 [2021-05-02 19:05:10,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287468952] [2021-05-02 19:05:10,546 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-02 19:05:10,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:05:10,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-02 19:05:10,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=627, Unknown=0, NotChecked=0, Total=756 [2021-05-02 19:05:10,547 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand has 28 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 27 states have internal predecessors, (58), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:11,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:05:11,012 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2021-05-02 19:05:11,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-02 19:05:11,013 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 27 states have internal predecessors, (58), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 43 [2021-05-02 19:05:11,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:05:11,014 INFO L225 Difference]: With dead ends: 59 [2021-05-02 19:05:11,014 INFO L226 Difference]: Without dead ends: 55 [2021-05-02 19:05:11,016 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 562.9ms TimeCoverageRelationStatistics Valid=274, Invalid=1366, Unknown=0, NotChecked=0, Total=1640 [2021-05-02 19:05:11,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-05-02 19:05:11,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2021-05-02 19:05:11,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 42 states have (on average 1.0952380952380953) internal successors, (46), 44 states have internal predecessors, (46), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:05:11,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2021-05-02 19:05:11,020 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 43 [2021-05-02 19:05:11,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:05:11,020 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2021-05-02 19:05:11,020 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 27 states have internal predecessors, (58), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:11,020 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2021-05-02 19:05:11,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-05-02 19:05:11,021 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:05:11,021 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:05:11,238 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:11,239 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:05:11,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:05:11,239 INFO L82 PathProgramCache]: Analyzing trace with hash 81089455, now seen corresponding path program 5 times [2021-05-02 19:05:11,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:05:11,239 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433017129] [2021-05-02 19:05:11,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:05:11,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:11,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:05:11,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:11,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:05:11,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:11,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-05-02 19:05:11,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:11,423 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:11,424 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:05:11,424 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433017129] [2021-05-02 19:05:11,424 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433017129] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:11,424 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568435710] [2021-05-02 19:05:11,424 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:11,469 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-05-02 19:05:11,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:05:11,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 17 conjunts are in the unsatisfiable core [2021-05-02 19:05:11,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:05:11,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:11,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:11,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:11,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:11,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:11,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:11,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:11,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:11,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:11,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:11,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:11,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:11,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:11,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:11,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:11,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:11,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:11,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:11,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:11,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:11,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:11,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:11,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:11,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:11,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:11,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:11,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:11,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:11,748 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:11,749 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568435710] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:11,749 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:05:11,749 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 32 [2021-05-02 19:05:11,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805658788] [2021-05-02 19:05:11,750 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-02 19:05:11,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:05:11,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-02 19:05:11,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=825, Unknown=0, NotChecked=0, Total=992 [2021-05-02 19:05:11,751 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand has 32 states, 32 states have (on average 1.9375) internal successors, (62), 31 states have internal predecessors, (62), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:12,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:05:12,513 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2021-05-02 19:05:12,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-02 19:05:12,513 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.9375) internal successors, (62), 31 states have internal predecessors, (62), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 45 [2021-05-02 19:05:12,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:05:12,514 INFO L225 Difference]: With dead ends: 72 [2021-05-02 19:05:12,514 INFO L226 Difference]: Without dead ends: 67 [2021-05-02 19:05:12,514 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 753 ImplicationChecksByTransitivity, 876.0ms TimeCoverageRelationStatistics Valid=392, Invalid=2058, Unknown=0, NotChecked=0, Total=2450 [2021-05-02 19:05:12,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-05-02 19:05:12,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 57. [2021-05-02 19:05:12,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 45 states have (on average 1.1111111111111112) internal successors, (50), 47 states have internal predecessors, (50), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:05:12,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2021-05-02 19:05:12,517 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 45 [2021-05-02 19:05:12,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:05:12,517 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2021-05-02 19:05:12,517 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 1.9375) internal successors, (62), 31 states have internal predecessors, (62), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:12,517 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2021-05-02 19:05:12,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-05-02 19:05:12,517 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:05:12,517 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:05:12,732 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-05-02 19:05:12,733 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:05:12,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:05:12,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1919563725, now seen corresponding path program 5 times [2021-05-02 19:05:12,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:05:12,733 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185021935] [2021-05-02 19:05:12,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:05:12,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:12,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:05:12,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:12,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:05:12,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:12,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-05-02 19:05:12,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:12,951 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:12,952 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:05:12,952 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185021935] [2021-05-02 19:05:12,952 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185021935] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:12,952 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624408302] [2021-05-02 19:05:12,952 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:12,994 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-05-02 19:05:12,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:05:12,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 17 conjunts are in the unsatisfiable core [2021-05-02 19:05:12,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:05:13,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:13,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:13,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:13,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:13,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:13,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:13,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:13,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:13,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:13,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:13,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:13,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:13,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:13,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:13,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:13,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:13,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:13,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:13,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:13,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:13,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:13,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:13,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:13,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:13,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:13,275 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:13,276 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624408302] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:13,276 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:05:13,276 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 32 [2021-05-02 19:05:13,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56391871] [2021-05-02 19:05:13,276 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-02 19:05:13,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:05:13,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-02 19:05:13,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=825, Unknown=0, NotChecked=0, Total=992 [2021-05-02 19:05:13,277 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand has 32 states, 32 states have (on average 1.9375) internal successors, (62), 31 states have internal predecessors, (62), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:14,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:05:14,098 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2021-05-02 19:05:14,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-02 19:05:14,098 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.9375) internal successors, (62), 31 states have internal predecessors, (62), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 45 [2021-05-02 19:05:14,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:05:14,099 INFO L225 Difference]: With dead ends: 67 [2021-05-02 19:05:14,099 INFO L226 Difference]: Without dead ends: 64 [2021-05-02 19:05:14,099 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 739 ImplicationChecksByTransitivity, 922.3ms TimeCoverageRelationStatistics Valid=392, Invalid=2058, Unknown=0, NotChecked=0, Total=2450 [2021-05-02 19:05:14,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-05-02 19:05:14,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 60. [2021-05-02 19:05:14,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 48 states have (on average 1.125) internal successors, (54), 50 states have internal predecessors, (54), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:05:14,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2021-05-02 19:05:14,101 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 45 [2021-05-02 19:05:14,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:05:14,101 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2021-05-02 19:05:14,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 1.9375) internal successors, (62), 31 states have internal predecessors, (62), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:14,102 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2021-05-02 19:05:14,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-05-02 19:05:14,102 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:05:14,102 INFO L523 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:05:14,317 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-05-02 19:05:14,317 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:05:14,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:05:14,317 INFO L82 PathProgramCache]: Analyzing trace with hash -80791629, now seen corresponding path program 6 times [2021-05-02 19:05:14,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:05:14,317 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833056735] [2021-05-02 19:05:14,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:05:14,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:14,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:05:14,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:14,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:05:14,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:14,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-05-02 19:05:14,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:14,511 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:14,511 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:05:14,511 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833056735] [2021-05-02 19:05:14,512 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833056735] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:14,512 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56640308] [2021-05-02 19:05:14,512 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:14,557 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-05-02 19:05:14,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:05:14,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-02 19:05:14,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:05:14,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:14,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:14,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:14,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:14,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:14,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:14,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:14,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:14,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:14,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:14,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:14,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:14,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:14,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:14,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:14,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:14,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:14,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:14,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:14,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:14,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:14,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:14,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:14,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:14,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:14,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:14,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:14,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:14,815 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:14,815 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56640308] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:14,815 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:05:14,815 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17] total 32 [2021-05-02 19:05:14,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404999703] [2021-05-02 19:05:14,816 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-02 19:05:14,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:05:14,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-02 19:05:14,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=823, Unknown=0, NotChecked=0, Total=992 [2021-05-02 19:05:14,817 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand has 32 states, 32 states have (on average 2.0625) internal successors, (66), 31 states have internal predecessors, (66), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:15,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:05:15,433 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2021-05-02 19:05:15,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-02 19:05:15,434 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.0625) internal successors, (66), 31 states have internal predecessors, (66), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 47 [2021-05-02 19:05:15,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:05:15,434 INFO L225 Difference]: With dead ends: 69 [2021-05-02 19:05:15,434 INFO L226 Difference]: Without dead ends: 63 [2021-05-02 19:05:15,435 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 718 ImplicationChecksByTransitivity, 680.4ms TimeCoverageRelationStatistics Valid=357, Invalid=1805, Unknown=0, NotChecked=0, Total=2162 [2021-05-02 19:05:15,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-05-02 19:05:15,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2021-05-02 19:05:15,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 49 states have internal predecessors, (52), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:05:15,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2021-05-02 19:05:15,437 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 47 [2021-05-02 19:05:15,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:05:15,437 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2021-05-02 19:05:15,437 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 2.0625) internal successors, (66), 31 states have internal predecessors, (66), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:15,437 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2021-05-02 19:05:15,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-05-02 19:05:15,437 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:05:15,437 INFO L523 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:05:15,645 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-05-02 19:05:15,645 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:05:15,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:05:15,650 INFO L82 PathProgramCache]: Analyzing trace with hash 2012129320, now seen corresponding path program 6 times [2021-05-02 19:05:15,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:05:15,650 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99905165] [2021-05-02 19:05:15,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:05:15,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:15,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:05:15,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:15,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:05:15,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:15,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-05-02 19:05:15,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:15,829 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:15,830 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:05:15,830 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99905165] [2021-05-02 19:05:15,830 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99905165] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:15,830 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302762779] [2021-05-02 19:05:15,830 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:15,871 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-05-02 19:05:15,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:05:15,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-02 19:05:15,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:05:15,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:15,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:15,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:15,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:15,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:15,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:15,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:15,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:15,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:15,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:15,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:15,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:15,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:15,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:16,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:16,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:16,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:16,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:16,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:16,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:16,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:16,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:16,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:16,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:16,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:16,115 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:16,115 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302762779] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:16,115 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:05:16,115 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17] total 32 [2021-05-02 19:05:16,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538890506] [2021-05-02 19:05:16,116 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-02 19:05:16,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:05:16,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-02 19:05:16,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=823, Unknown=0, NotChecked=0, Total=992 [2021-05-02 19:05:16,116 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand has 32 states, 32 states have (on average 2.0625) internal successors, (66), 31 states have internal predecessors, (66), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:16,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:05:16,666 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2021-05-02 19:05:16,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-02 19:05:16,667 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.0625) internal successors, (66), 31 states have internal predecessors, (66), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 47 [2021-05-02 19:05:16,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:05:16,667 INFO L225 Difference]: With dead ends: 63 [2021-05-02 19:05:16,667 INFO L226 Difference]: Without dead ends: 59 [2021-05-02 19:05:16,668 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 669 ImplicationChecksByTransitivity, 684.7ms TimeCoverageRelationStatistics Valid=357, Invalid=1805, Unknown=0, NotChecked=0, Total=2162 [2021-05-02 19:05:16,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-05-02 19:05:16,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2021-05-02 19:05:16,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 46 states have (on average 1.0869565217391304) internal successors, (50), 48 states have internal predecessors, (50), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:05:16,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2021-05-02 19:05:16,670 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 47 [2021-05-02 19:05:16,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:05:16,670 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2021-05-02 19:05:16,670 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 2.0625) internal successors, (66), 31 states have internal predecessors, (66), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:16,670 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2021-05-02 19:05:16,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-05-02 19:05:16,670 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:05:16,671 INFO L523 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:05:16,880 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:16,881 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:05:16,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:05:16,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1330071154, now seen corresponding path program 7 times [2021-05-02 19:05:16,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:05:16,881 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561544583] [2021-05-02 19:05:16,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:05:16,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:16,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:05:16,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:16,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:05:16,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:17,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-05-02 19:05:17,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:17,102 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 25 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:17,102 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:05:17,102 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561544583] [2021-05-02 19:05:17,102 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561544583] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:17,102 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616830199] [2021-05-02 19:05:17,102 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:17,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:17,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 19:05:17,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:05:17,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:17,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:17,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:17,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:17,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:17,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:17,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:17,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:17,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:17,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:17,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:17,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:17,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:17,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:17,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:17,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:17,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:17,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:17,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:17,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:17,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:17,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:17,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:17,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:17,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:17,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:17,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:17,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:17,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:17,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:17,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:17,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:17,458 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 25 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:17,458 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616830199] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:17,458 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:05:17,458 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 36 [2021-05-02 19:05:17,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063150781] [2021-05-02 19:05:17,459 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-05-02 19:05:17,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:05:17,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-05-02 19:05:17,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1047, Unknown=0, NotChecked=0, Total=1260 [2021-05-02 19:05:17,460 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:18,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:05:18,415 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2021-05-02 19:05:18,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-02 19:05:18,416 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 49 [2021-05-02 19:05:18,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:05:18,416 INFO L225 Difference]: With dead ends: 76 [2021-05-02 19:05:18,417 INFO L226 Difference]: Without dead ends: 71 [2021-05-02 19:05:18,417 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 998 ImplicationChecksByTransitivity, 1002.2ms TimeCoverageRelationStatistics Valid=488, Invalid=2592, Unknown=0, NotChecked=0, Total=3080 [2021-05-02 19:05:18,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-05-02 19:05:18,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 61. [2021-05-02 19:05:18,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 51 states have internal predecessors, (54), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:05:18,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2021-05-02 19:05:18,419 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 49 [2021-05-02 19:05:18,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:05:18,420 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2021-05-02 19:05:18,420 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:18,420 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2021-05-02 19:05:18,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-05-02 19:05:18,420 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:05:18,420 INFO L523 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:05:18,638 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:18,639 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:05:18,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:05:18,639 INFO L82 PathProgramCache]: Analyzing trace with hash 222646764, now seen corresponding path program 7 times [2021-05-02 19:05:18,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:05:18,639 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363624833] [2021-05-02 19:05:18,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:05:18,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:18,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:05:18,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:18,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:05:18,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:18,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-05-02 19:05:18,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:18,880 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 25 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:18,880 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:05:18,880 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363624833] [2021-05-02 19:05:18,880 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363624833] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:18,880 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526754685] [2021-05-02 19:05:18,880 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:18,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:18,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 19:05:18,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:05:18,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:18,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:18,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:18,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:18,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:18,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:19,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:19,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:19,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:19,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:19,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:19,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:19,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:19,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:19,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:19,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:19,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:19,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:19,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:19,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:19,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:19,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:19,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:19,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:19,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:19,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:19,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:19,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:19,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:19,229 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 25 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:19,229 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526754685] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:19,229 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:05:19,229 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 36 [2021-05-02 19:05:19,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064212219] [2021-05-02 19:05:19,230 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-05-02 19:05:19,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:05:19,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-05-02 19:05:19,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1047, Unknown=0, NotChecked=0, Total=1260 [2021-05-02 19:05:19,230 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:20,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:05:20,006 INFO L93 Difference]: Finished difference Result 71 states and 76 transitions. [2021-05-02 19:05:20,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-02 19:05:20,007 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 49 [2021-05-02 19:05:20,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:05:20,007 INFO L225 Difference]: With dead ends: 71 [2021-05-02 19:05:20,007 INFO L226 Difference]: Without dead ends: 68 [2021-05-02 19:05:20,008 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 975 ImplicationChecksByTransitivity, 994.3ms TimeCoverageRelationStatistics Valid=488, Invalid=2592, Unknown=0, NotChecked=0, Total=3080 [2021-05-02 19:05:20,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-05-02 19:05:20,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2021-05-02 19:05:20,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 54 states have internal predecessors, (58), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:05:20,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 69 transitions. [2021-05-02 19:05:20,010 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 69 transitions. Word has length 49 [2021-05-02 19:05:20,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:05:20,010 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 69 transitions. [2021-05-02 19:05:20,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:20,010 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 69 transitions. [2021-05-02 19:05:20,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-05-02 19:05:20,011 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:05:20,011 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:05:20,227 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:20,227 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:05:20,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:05:20,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1269581330, now seen corresponding path program 8 times [2021-05-02 19:05:20,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:05:20,228 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656736940] [2021-05-02 19:05:20,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:05:20,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:20,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:05:20,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:20,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:05:20,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:20,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-05-02 19:05:20,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:20,443 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:20,443 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:05:20,443 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656736940] [2021-05-02 19:05:20,443 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656736940] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:20,443 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382049689] [2021-05-02 19:05:20,443 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:20,492 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 19:05:20,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:05:20,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-02 19:05:20,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:05:20,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:20,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:20,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:20,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:20,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:20,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:20,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:20,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:20,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:20,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:20,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:20,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:20,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:20,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:20,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:20,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:20,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:20,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:20,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:20,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:20,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:20,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:20,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:20,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:20,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:20,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:20,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:20,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:20,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:20,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:20,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:20,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:20,807 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:20,807 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382049689] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:20,807 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:05:20,807 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19] total 36 [2021-05-02 19:05:20,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33775827] [2021-05-02 19:05:20,808 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-05-02 19:05:20,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:05:20,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-05-02 19:05:20,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1045, Unknown=0, NotChecked=0, Total=1260 [2021-05-02 19:05:20,809 INFO L87 Difference]: Start difference. First operand 64 states and 69 transitions. Second operand has 36 states, 36 states have (on average 2.0555555555555554) internal successors, (74), 35 states have internal predecessors, (74), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:21,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:05:21,448 INFO L93 Difference]: Finished difference Result 73 states and 78 transitions. [2021-05-02 19:05:21,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-02 19:05:21,449 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.0555555555555554) internal successors, (74), 35 states have internal predecessors, (74), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 51 [2021-05-02 19:05:21,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:05:21,449 INFO L225 Difference]: With dead ends: 73 [2021-05-02 19:05:21,449 INFO L226 Difference]: Without dead ends: 67 [2021-05-02 19:05:21,450 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 958 ImplicationChecksByTransitivity, 822.3ms TimeCoverageRelationStatistics Valid=452, Invalid=2304, Unknown=0, NotChecked=0, Total=2756 [2021-05-02 19:05:21,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-05-02 19:05:21,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2021-05-02 19:05:21,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 51 states have (on average 1.0980392156862746) internal successors, (56), 53 states have internal predecessors, (56), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:05:21,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2021-05-02 19:05:21,452 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 51 [2021-05-02 19:05:21,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:05:21,452 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2021-05-02 19:05:21,452 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.0555555555555554) internal successors, (74), 35 states have internal predecessors, (74), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:21,452 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2021-05-02 19:05:21,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-05-02 19:05:21,453 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:05:21,453 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:05:21,668 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-05-02 19:05:21,669 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:05:21,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:05:21,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1783551609, now seen corresponding path program 8 times [2021-05-02 19:05:21,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:05:21,669 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629367834] [2021-05-02 19:05:21,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:05:21,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:21,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:05:21,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:21,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:05:21,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:21,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-05-02 19:05:21,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:21,896 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:21,896 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:05:21,896 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629367834] [2021-05-02 19:05:21,896 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629367834] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:21,896 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184055283] [2021-05-02 19:05:21,896 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:21,937 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 19:05:21,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:05:21,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-02 19:05:21,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:05:21,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:21,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:21,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:21,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:21,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:21,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:22,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:22,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:22,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:22,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:22,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:22,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:22,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:22,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:22,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:22,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:22,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:22,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:22,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:22,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:22,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:22,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:22,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:22,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:22,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:22,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:22,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:22,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:22,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:22,217 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:22,218 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184055283] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:22,218 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:05:22,218 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19] total 36 [2021-05-02 19:05:22,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093873291] [2021-05-02 19:05:22,218 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-05-02 19:05:22,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:05:22,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-05-02 19:05:22,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1045, Unknown=0, NotChecked=0, Total=1260 [2021-05-02 19:05:22,219 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand has 36 states, 36 states have (on average 2.0555555555555554) internal successors, (74), 35 states have internal predecessors, (74), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:22,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:05:22,860 INFO L93 Difference]: Finished difference Result 67 states and 70 transitions. [2021-05-02 19:05:22,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-02 19:05:22,860 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.0555555555555554) internal successors, (74), 35 states have internal predecessors, (74), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 51 [2021-05-02 19:05:22,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:05:22,861 INFO L225 Difference]: With dead ends: 67 [2021-05-02 19:05:22,861 INFO L226 Difference]: Without dead ends: 63 [2021-05-02 19:05:22,862 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 893 ImplicationChecksByTransitivity, 797.8ms TimeCoverageRelationStatistics Valid=452, Invalid=2304, Unknown=0, NotChecked=0, Total=2756 [2021-05-02 19:05:22,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-05-02 19:05:22,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2021-05-02 19:05:22,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 50 states have (on average 1.08) internal successors, (54), 52 states have internal predecessors, (54), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:05:22,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2021-05-02 19:05:22,863 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 51 [2021-05-02 19:05:22,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:05:22,863 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2021-05-02 19:05:22,863 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.0555555555555554) internal successors, (74), 35 states have internal predecessors, (74), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:22,864 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2021-05-02 19:05:22,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-05-02 19:05:22,864 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:05:22,864 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:05:23,073 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-05-02 19:05:23,073 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:05:23,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:05:23,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1742757677, now seen corresponding path program 9 times [2021-05-02 19:05:23,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:05:23,074 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154761562] [2021-05-02 19:05:23,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:05:23,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:23,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:05:23,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:23,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:05:23,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:23,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-05-02 19:05:23,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:23,304 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:23,305 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:05:23,305 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154761562] [2021-05-02 19:05:23,305 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154761562] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:23,305 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069423685] [2021-05-02 19:05:23,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:23,357 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-05-02 19:05:23,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:05:23,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-02 19:05:23,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:05:23,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:23,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:23,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:23,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:23,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:23,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:23,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:23,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:23,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:23,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:23,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:23,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:23,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:23,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:23,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:23,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:23,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:23,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:23,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:23,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:23,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:23,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:23,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:23,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:23,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:23,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:23,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:23,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:23,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:23,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:23,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:23,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:23,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:23,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:23,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:23,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:23,715 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:23,715 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069423685] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:23,715 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:05:23,715 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22] total 40 [2021-05-02 19:05:23,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452018183] [2021-05-02 19:05:23,715 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-05-02 19:05:23,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:05:23,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-05-02 19:05:23,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=1295, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 19:05:23,716 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand has 40 states, 40 states have (on average 1.95) internal successors, (78), 39 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:24,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:05:24,666 INFO L93 Difference]: Finished difference Result 80 states and 87 transitions. [2021-05-02 19:05:24,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-05-02 19:05:24,667 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.95) internal successors, (78), 39 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 53 [2021-05-02 19:05:24,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:05:24,667 INFO L225 Difference]: With dead ends: 80 [2021-05-02 19:05:24,668 INFO L226 Difference]: Without dead ends: 75 [2021-05-02 19:05:24,668 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1277 ImplicationChecksByTransitivity, 1115.6ms TimeCoverageRelationStatistics Valid=596, Invalid=3186, Unknown=0, NotChecked=0, Total=3782 [2021-05-02 19:05:24,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-05-02 19:05:24,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 65. [2021-05-02 19:05:24,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 53 states have (on average 1.0943396226415094) internal successors, (58), 55 states have internal predecessors, (58), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:05:24,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2021-05-02 19:05:24,671 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 53 [2021-05-02 19:05:24,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:05:24,671 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2021-05-02 19:05:24,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 1.95) internal successors, (78), 39 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:24,671 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2021-05-02 19:05:24,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-05-02 19:05:24,671 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:05:24,671 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:05:24,877 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-05-02 19:05:24,877 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:05:24,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:05:24,877 INFO L82 PathProgramCache]: Analyzing trace with hash -733439029, now seen corresponding path program 9 times [2021-05-02 19:05:24,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:05:24,877 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124163564] [2021-05-02 19:05:24,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:05:24,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:24,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:05:24,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:24,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:05:24,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:24,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-05-02 19:05:24,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:25,117 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:25,117 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:05:25,117 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124163564] [2021-05-02 19:05:25,117 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124163564] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:25,117 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982389053] [2021-05-02 19:05:25,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:25,163 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-05-02 19:05:25,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:05:25,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-02 19:05:25,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:05:25,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:25,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:25,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:25,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:25,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:25,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:25,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:25,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:25,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:25,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:25,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:25,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:25,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:25,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:25,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:25,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:25,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:25,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:25,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:25,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:25,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:25,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:25,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:25,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:25,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:25,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:25,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:25,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:25,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:25,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:25,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:25,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:25,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:25,556 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:25,556 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982389053] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:25,556 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:05:25,556 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22] total 40 [2021-05-02 19:05:25,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000478864] [2021-05-02 19:05:25,557 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-05-02 19:05:25,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:05:25,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-05-02 19:05:25,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=1295, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 19:05:25,557 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand has 40 states, 40 states have (on average 1.95) internal successors, (78), 39 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:26,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:05:26,441 INFO L93 Difference]: Finished difference Result 75 states and 80 transitions. [2021-05-02 19:05:26,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-05-02 19:05:26,441 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.95) internal successors, (78), 39 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 53 [2021-05-02 19:05:26,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:05:26,442 INFO L225 Difference]: With dead ends: 75 [2021-05-02 19:05:26,442 INFO L226 Difference]: Without dead ends: 72 [2021-05-02 19:05:26,443 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1243 ImplicationChecksByTransitivity, 1095.5ms TimeCoverageRelationStatistics Valid=596, Invalid=3186, Unknown=0, NotChecked=0, Total=3782 [2021-05-02 19:05:26,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-05-02 19:05:26,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2021-05-02 19:05:26,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 56 states have (on average 1.1071428571428572) internal successors, (62), 58 states have internal predecessors, (62), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:05:26,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 73 transitions. [2021-05-02 19:05:26,445 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 73 transitions. Word has length 53 [2021-05-02 19:05:26,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:05:26,445 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 73 transitions. [2021-05-02 19:05:26,445 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 1.95) internal successors, (78), 39 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:26,445 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 73 transitions. [2021-05-02 19:05:26,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-02 19:05:26,445 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:05:26,446 INFO L523 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:05:26,652 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2021-05-02 19:05:26,653 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:05:26,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:05:26,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1594135601, now seen corresponding path program 10 times [2021-05-02 19:05:26,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:05:26,653 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644809333] [2021-05-02 19:05:26,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:05:26,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:26,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:05:26,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:26,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:05:26,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:26,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-05-02 19:05:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:26,873 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 36 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:26,873 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:05:26,873 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644809333] [2021-05-02 19:05:26,873 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644809333] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:26,873 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320151618] [2021-05-02 19:05:26,874 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:26,909 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 19:05:26,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:05:26,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-02 19:05:26,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:05:26,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:26,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:26,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:26,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:26,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:26,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:27,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:27,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:27,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:27,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:27,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:27,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:27,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:27,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:27,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:27,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:27,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:27,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:27,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:27,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:27,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:27,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:27,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:27,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:27,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:27,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:27,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:27,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:27,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:27,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:27,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:27,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:27,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:27,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:27,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:27,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:27,278 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 36 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:27,279 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320151618] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:27,279 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:05:27,279 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 21] total 40 [2021-05-02 19:05:27,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085918744] [2021-05-02 19:05:27,279 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-05-02 19:05:27,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:05:27,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-05-02 19:05:27,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=1293, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 19:05:27,280 INFO L87 Difference]: Start difference. First operand 68 states and 73 transitions. Second operand has 40 states, 40 states have (on average 2.05) internal successors, (82), 39 states have internal predecessors, (82), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:28,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:05:28,092 INFO L93 Difference]: Finished difference Result 77 states and 82 transitions. [2021-05-02 19:05:28,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-05-02 19:05:28,093 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.05) internal successors, (82), 39 states have internal predecessors, (82), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 55 [2021-05-02 19:05:28,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:05:28,093 INFO L225 Difference]: With dead ends: 77 [2021-05-02 19:05:28,093 INFO L226 Difference]: Without dead ends: 71 [2021-05-02 19:05:28,094 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1232 ImplicationChecksByTransitivity, 910.2ms TimeCoverageRelationStatistics Valid=559, Invalid=2863, Unknown=0, NotChecked=0, Total=3422 [2021-05-02 19:05:28,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-05-02 19:05:28,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 67. [2021-05-02 19:05:28,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 57 states have internal predecessors, (60), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:05:28,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2021-05-02 19:05:28,096 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 55 [2021-05-02 19:05:28,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:05:28,096 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2021-05-02 19:05:28,096 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 2.05) internal successors, (82), 39 states have internal predecessors, (82), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:28,097 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2021-05-02 19:05:28,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-02 19:05:28,097 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:05:28,097 INFO L523 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:05:28,313 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-05-02 19:05:28,313 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:05:28,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:05:28,313 INFO L82 PathProgramCache]: Analyzing trace with hash 985541286, now seen corresponding path program 10 times [2021-05-02 19:05:28,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:05:28,313 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239939375] [2021-05-02 19:05:28,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:05:28,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:28,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:05:28,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:28,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:05:28,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:28,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-05-02 19:05:28,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:28,602 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 36 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:28,602 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:05:28,602 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239939375] [2021-05-02 19:05:28,602 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239939375] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:28,602 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002874144] [2021-05-02 19:05:28,602 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:28,639 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 19:05:28,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:05:28,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-02 19:05:28,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:05:28,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:28,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:28,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:28,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:28,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:28,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:28,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:28,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:28,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:28,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:28,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:28,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:28,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:28,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:28,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:28,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:28,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:28,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:28,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:28,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:28,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:28,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:28,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:28,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:28,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:28,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:28,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:28,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:28,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:28,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:28,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:28,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:28,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:28,982 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 36 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:28,982 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002874144] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:28,982 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:05:28,982 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 21] total 40 [2021-05-02 19:05:28,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116862963] [2021-05-02 19:05:28,983 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-05-02 19:05:28,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:05:28,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-05-02 19:05:28,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=1293, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 19:05:28,984 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand has 40 states, 40 states have (on average 2.05) internal successors, (82), 39 states have internal predecessors, (82), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:29,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:05:29,781 INFO L93 Difference]: Finished difference Result 71 states and 74 transitions. [2021-05-02 19:05:29,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-05-02 19:05:29,782 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.05) internal successors, (82), 39 states have internal predecessors, (82), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 55 [2021-05-02 19:05:29,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:05:29,782 INFO L225 Difference]: With dead ends: 71 [2021-05-02 19:05:29,782 INFO L226 Difference]: Without dead ends: 67 [2021-05-02 19:05:29,783 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1149 ImplicationChecksByTransitivity, 980.6ms TimeCoverageRelationStatistics Valid=559, Invalid=2863, Unknown=0, NotChecked=0, Total=3422 [2021-05-02 19:05:29,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-05-02 19:05:29,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2021-05-02 19:05:29,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 56 states have internal predecessors, (58), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:05:29,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2021-05-02 19:05:29,784 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 55 [2021-05-02 19:05:29,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:05:29,785 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2021-05-02 19:05:29,785 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 2.05) internal successors, (82), 39 states have internal predecessors, (82), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:29,785 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2021-05-02 19:05:29,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-05-02 19:05:29,785 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:05:29,785 INFO L523 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:05:29,989 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:29,989 INFO L428 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:05:29,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:05:29,995 INFO L82 PathProgramCache]: Analyzing trace with hash -38693748, now seen corresponding path program 11 times [2021-05-02 19:05:29,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:05:29,995 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000430785] [2021-05-02 19:05:29,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:05:30,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:30,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:05:30,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:30,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:05:30,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:30,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-05-02 19:05:30,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:30,237 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 49 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:30,237 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:05:30,237 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000430785] [2021-05-02 19:05:30,237 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000430785] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:30,238 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000896233] [2021-05-02 19:05:30,238 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:30,369 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-05-02 19:05:30,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:05:30,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 23 conjunts are in the unsatisfiable core [2021-05-02 19:05:30,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:05:30,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:30,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:30,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:30,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:30,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:30,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:30,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:30,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:30,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:30,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:30,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:30,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:30,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:30,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:30,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:30,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:30,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:30,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:30,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:30,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:30,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:30,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:30,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:30,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:30,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:30,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:30,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:30,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:30,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:30,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:30,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:30,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:30,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:30,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:30,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:30,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:30,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:30,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:30,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:30,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:30,770 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 49 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:30,770 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000896233] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:30,770 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:05:30,770 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24] total 44 [2021-05-02 19:05:30,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099779269] [2021-05-02 19:05:30,770 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-05-02 19:05:30,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:05:30,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-05-02 19:05:30,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=1569, Unknown=0, NotChecked=0, Total=1892 [2021-05-02 19:05:30,772 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand has 44 states, 44 states have (on average 1.9545454545454546) internal successors, (86), 43 states have internal predecessors, (86), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:31,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:05:31,757 INFO L93 Difference]: Finished difference Result 84 states and 91 transitions. [2021-05-02 19:05:31,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-02 19:05:31,757 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.9545454545454546) internal successors, (86), 43 states have internal predecessors, (86), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 57 [2021-05-02 19:05:31,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:05:31,758 INFO L225 Difference]: With dead ends: 84 [2021-05-02 19:05:31,758 INFO L226 Difference]: Without dead ends: 79 [2021-05-02 19:05:31,758 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1590 ImplicationChecksByTransitivity, 1214.1ms TimeCoverageRelationStatistics Valid=716, Invalid=3840, Unknown=0, NotChecked=0, Total=4556 [2021-05-02 19:05:31,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-05-02 19:05:31,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 69. [2021-05-02 19:05:31,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 57 states have (on average 1.087719298245614) internal successors, (62), 59 states have internal predecessors, (62), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:05:31,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2021-05-02 19:05:31,761 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 57 [2021-05-02 19:05:31,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:05:31,761 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2021-05-02 19:05:31,761 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 44 states, 44 states have (on average 1.9545454545454546) internal successors, (86), 43 states have internal predecessors, (86), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:31,761 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2021-05-02 19:05:31,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-05-02 19:05:31,761 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:05:31,761 INFO L523 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:05:31,978 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-05-02 19:05:31,978 INFO L428 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:05:31,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:05:31,979 INFO L82 PathProgramCache]: Analyzing trace with hash -241343126, now seen corresponding path program 11 times [2021-05-02 19:05:31,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:05:31,979 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406085420] [2021-05-02 19:05:31,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:05:31,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:32,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:05:32,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:32,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:05:32,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:32,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-05-02 19:05:32,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:32,267 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 49 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:32,268 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:05:32,268 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406085420] [2021-05-02 19:05:32,268 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406085420] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:32,268 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496632515] [2021-05-02 19:05:32,268 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:32,312 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-05-02 19:05:32,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:05:32,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 23 conjunts are in the unsatisfiable core [2021-05-02 19:05:32,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:05:32,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:32,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:32,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:32,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:32,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:32,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:32,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:32,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:32,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:32,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:32,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:32,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:32,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:32,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:32,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:32,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:32,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:32,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:32,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:32,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:32,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:32,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:32,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:32,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:32,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:32,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:32,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:32,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:32,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:32,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:32,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:32,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:32,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:32,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:32,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:32,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:32,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:32,767 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 49 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:32,767 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496632515] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:32,767 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:05:32,767 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24] total 44 [2021-05-02 19:05:32,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652028569] [2021-05-02 19:05:32,768 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-05-02 19:05:32,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:05:32,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-05-02 19:05:32,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=1569, Unknown=0, NotChecked=0, Total=1892 [2021-05-02 19:05:32,768 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand has 44 states, 44 states have (on average 1.9545454545454546) internal successors, (86), 43 states have internal predecessors, (86), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:33,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:05:33,778 INFO L93 Difference]: Finished difference Result 79 states and 84 transitions. [2021-05-02 19:05:33,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-02 19:05:33,779 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.9545454545454546) internal successors, (86), 43 states have internal predecessors, (86), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 57 [2021-05-02 19:05:33,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:05:33,779 INFO L225 Difference]: With dead ends: 79 [2021-05-02 19:05:33,779 INFO L226 Difference]: Without dead ends: 76 [2021-05-02 19:05:33,780 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1543 ImplicationChecksByTransitivity, 1304.3ms TimeCoverageRelationStatistics Valid=716, Invalid=3840, Unknown=0, NotChecked=0, Total=4556 [2021-05-02 19:05:33,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-05-02 19:05:33,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 72. [2021-05-02 19:05:33,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 60 states have (on average 1.1) internal successors, (66), 62 states have internal predecessors, (66), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:05:33,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 77 transitions. [2021-05-02 19:05:33,785 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 77 transitions. Word has length 57 [2021-05-02 19:05:33,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:05:33,785 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 77 transitions. [2021-05-02 19:05:33,785 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 44 states, 44 states have (on average 1.9545454545454546) internal successors, (86), 43 states have internal predecessors, (86), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:33,785 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 77 transitions. [2021-05-02 19:05:33,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-05-02 19:05:33,785 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:05:33,786 INFO L523 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:05:33,993 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:33,993 INFO L428 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:05:33,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:05:33,993 INFO L82 PathProgramCache]: Analyzing trace with hash 2051895824, now seen corresponding path program 12 times [2021-05-02 19:05:33,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:05:33,993 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240389885] [2021-05-02 19:05:33,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:05:34,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:34,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:05:34,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:34,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:05:34,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:34,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-05-02 19:05:34,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:34,275 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 49 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:34,275 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:05:34,275 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240389885] [2021-05-02 19:05:34,275 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240389885] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:34,275 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271341051] [2021-05-02 19:05:34,275 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:34,331 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-05-02 19:05:34,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:05:34,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-02 19:05:34,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:05:34,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:34,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:34,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:34,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:34,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:34,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:34,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:34,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:34,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:34,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:34,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:34,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:34,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:34,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:34,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:34,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:34,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:34,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:34,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:34,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:34,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:34,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:34,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:34,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:34,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:34,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:34,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:34,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:34,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:34,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:34,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:34,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:34,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:34,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:34,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:34,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:34,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:34,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:34,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:34,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:34,690 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 49 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:34,690 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271341051] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:34,690 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:05:34,690 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 23] total 44 [2021-05-02 19:05:34,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031087768] [2021-05-02 19:05:34,691 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-05-02 19:05:34,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:05:34,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-05-02 19:05:34,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=1567, Unknown=0, NotChecked=0, Total=1892 [2021-05-02 19:05:34,691 INFO L87 Difference]: Start difference. First operand 72 states and 77 transitions. Second operand has 44 states, 44 states have (on average 2.0454545454545454) internal successors, (90), 43 states have internal predecessors, (90), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:35,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:05:35,522 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2021-05-02 19:05:35,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-05-02 19:05:35,523 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.0454545454545454) internal successors, (90), 43 states have internal predecessors, (90), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 59 [2021-05-02 19:05:35,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:05:35,523 INFO L225 Difference]: With dead ends: 81 [2021-05-02 19:05:35,523 INFO L226 Difference]: Without dead ends: 75 [2021-05-02 19:05:35,524 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1540 ImplicationChecksByTransitivity, 1020.4ms TimeCoverageRelationStatistics Valid=678, Invalid=3482, Unknown=0, NotChecked=0, Total=4160 [2021-05-02 19:05:35,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-05-02 19:05:35,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 71. [2021-05-02 19:05:35,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 61 states have internal predecessors, (64), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:05:35,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2021-05-02 19:05:35,525 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 59 [2021-05-02 19:05:35,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:05:35,526 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2021-05-02 19:05:35,526 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 44 states, 44 states have (on average 2.0454545454545454) internal successors, (90), 43 states have internal predecessors, (90), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:35,526 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2021-05-02 19:05:35,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-05-02 19:05:35,526 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:05:35,526 INFO L523 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:05:35,741 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2021-05-02 19:05:35,742 INFO L428 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:05:35,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:05:35,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1297808261, now seen corresponding path program 12 times [2021-05-02 19:05:35,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:05:35,742 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219436703] [2021-05-02 19:05:35,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:05:35,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:35,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:05:35,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:35,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:05:35,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:35,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-05-02 19:05:35,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:36,053 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 49 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:36,053 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:05:36,053 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219436703] [2021-05-02 19:05:36,053 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219436703] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:36,054 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270229432] [2021-05-02 19:05:36,054 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:36,107 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-05-02 19:05:36,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:05:36,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-02 19:05:36,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:05:36,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:36,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:36,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:36,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:36,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:36,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:36,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:36,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:36,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:36,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:36,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:36,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:36,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:36,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:36,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:36,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:36,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:36,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:36,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:36,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:36,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:36,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:36,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:36,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:36,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:36,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:36,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:36,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:36,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:36,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:36,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:36,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:36,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:36,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:36,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:36,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:36,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:36,494 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 49 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:36,495 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270229432] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:36,495 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:05:36,495 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 23] total 44 [2021-05-02 19:05:36,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840516268] [2021-05-02 19:05:36,495 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-05-02 19:05:36,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:05:36,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-05-02 19:05:36,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=1567, Unknown=0, NotChecked=0, Total=1892 [2021-05-02 19:05:36,496 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand has 44 states, 44 states have (on average 2.0454545454545454) internal successors, (90), 43 states have internal predecessors, (90), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:37,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:05:37,270 INFO L93 Difference]: Finished difference Result 75 states and 78 transitions. [2021-05-02 19:05:37,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-05-02 19:05:37,271 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.0454545454545454) internal successors, (90), 43 states have internal predecessors, (90), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 59 [2021-05-02 19:05:37,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:05:37,271 INFO L225 Difference]: With dead ends: 75 [2021-05-02 19:05:37,271 INFO L226 Difference]: Without dead ends: 71 [2021-05-02 19:05:37,272 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1437 ImplicationChecksByTransitivity, 1057.0ms TimeCoverageRelationStatistics Valid=678, Invalid=3482, Unknown=0, NotChecked=0, Total=4160 [2021-05-02 19:05:37,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-05-02 19:05:37,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2021-05-02 19:05:37,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 58 states have (on average 1.0689655172413792) internal successors, (62), 60 states have internal predecessors, (62), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:05:37,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 73 transitions. [2021-05-02 19:05:37,273 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 73 transitions. Word has length 59 [2021-05-02 19:05:37,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:05:37,273 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 73 transitions. [2021-05-02 19:05:37,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 44 states, 44 states have (on average 2.0454545454545454) internal successors, (90), 43 states have internal predecessors, (90), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:37,273 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 73 transitions. [2021-05-02 19:05:37,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-02 19:05:37,274 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:05:37,274 INFO L523 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:05:37,490 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:37,490 INFO L428 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:05:37,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:05:37,490 INFO L82 PathProgramCache]: Analyzing trace with hash -597841493, now seen corresponding path program 13 times [2021-05-02 19:05:37,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:05:37,490 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018412972] [2021-05-02 19:05:37,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:05:37,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:37,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:05:37,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:37,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:05:37,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:37,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-05-02 19:05:37,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:37,805 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 64 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:37,806 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:05:37,806 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018412972] [2021-05-02 19:05:37,806 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018412972] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:37,806 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863002325] [2021-05-02 19:05:37,806 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:37,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:37,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-02 19:05:37,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:05:37,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:37,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:37,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:37,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:37,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:37,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:37,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:37,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:37,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:37,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:37,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:37,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:38,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:38,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:38,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:38,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:38,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:38,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:38,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:38,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:38,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:38,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:38,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:38,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:38,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:38,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:38,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:38,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:38,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:38,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:38,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:38,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:38,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:38,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:38,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:38,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:38,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:38,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:38,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:38,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:38,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:38,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:38,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:38,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:38,288 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 64 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:38,288 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863002325] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:38,288 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:05:38,288 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26] total 48 [2021-05-02 19:05:38,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945051071] [2021-05-02 19:05:38,288 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-05-02 19:05:38,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:05:38,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-05-02 19:05:38,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=1869, Unknown=0, NotChecked=0, Total=2256 [2021-05-02 19:05:38,289 INFO L87 Difference]: Start difference. First operand 70 states and 73 transitions. Second operand has 48 states, 48 states have (on average 1.9583333333333333) internal successors, (94), 47 states have internal predecessors, (94), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:39,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:05:39,423 INFO L93 Difference]: Finished difference Result 88 states and 95 transitions. [2021-05-02 19:05:39,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-02 19:05:39,437 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.9583333333333333) internal successors, (94), 47 states have internal predecessors, (94), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 61 [2021-05-02 19:05:39,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:05:39,437 INFO L225 Difference]: With dead ends: 88 [2021-05-02 19:05:39,437 INFO L226 Difference]: Without dead ends: 83 [2021-05-02 19:05:39,438 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1937 ImplicationChecksByTransitivity, 1368.2ms TimeCoverageRelationStatistics Valid=848, Invalid=4554, Unknown=0, NotChecked=0, Total=5402 [2021-05-02 19:05:39,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-05-02 19:05:39,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 73. [2021-05-02 19:05:39,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 61 states have (on average 1.0819672131147542) internal successors, (66), 63 states have internal predecessors, (66), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:05:39,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2021-05-02 19:05:39,440 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 61 [2021-05-02 19:05:39,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:05:39,440 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2021-05-02 19:05:39,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 48 states, 48 states have (on average 1.9583333333333333) internal successors, (94), 47 states have internal predecessors, (94), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:39,440 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2021-05-02 19:05:39,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-02 19:05:39,441 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:05:39,441 INFO L523 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:05:39,656 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-05-02 19:05:39,656 INFO L428 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:05:39,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:05:39,657 INFO L82 PathProgramCache]: Analyzing trace with hash -2059862327, now seen corresponding path program 13 times [2021-05-02 19:05:39,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:05:39,657 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176284873] [2021-05-02 19:05:39,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:05:39,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:39,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:05:39,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:39,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:05:39,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:39,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-05-02 19:05:39,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:40,025 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 64 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:40,025 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:05:40,025 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176284873] [2021-05-02 19:05:40,025 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176284873] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:40,025 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218561306] [2021-05-02 19:05:40,026 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:40,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:40,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-02 19:05:40,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:05:40,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:40,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:40,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:40,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:40,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:40,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:40,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:40,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:40,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:40,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:40,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:40,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:40,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:40,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:40,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:40,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:40,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:40,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:40,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:40,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:40,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:40,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:40,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:40,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:40,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:40,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:40,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:40,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:40,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:40,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:40,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:40,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:40,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:40,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:40,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:40,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:40,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:40,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:40,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:40,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:40,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:40,496 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 64 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:40,496 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218561306] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:40,496 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:05:40,497 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26] total 48 [2021-05-02 19:05:40,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035617208] [2021-05-02 19:05:40,497 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-05-02 19:05:40,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:05:40,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-05-02 19:05:40,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=1869, Unknown=0, NotChecked=0, Total=2256 [2021-05-02 19:05:40,498 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand has 48 states, 48 states have (on average 1.9583333333333333) internal successors, (94), 47 states have internal predecessors, (94), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:41,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:05:41,637 INFO L93 Difference]: Finished difference Result 83 states and 88 transitions. [2021-05-02 19:05:41,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-02 19:05:41,637 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.9583333333333333) internal successors, (94), 47 states have internal predecessors, (94), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 61 [2021-05-02 19:05:41,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:05:41,638 INFO L225 Difference]: With dead ends: 83 [2021-05-02 19:05:41,638 INFO L226 Difference]: Without dead ends: 80 [2021-05-02 19:05:41,638 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1875 ImplicationChecksByTransitivity, 1417.5ms TimeCoverageRelationStatistics Valid=848, Invalid=4554, Unknown=0, NotChecked=0, Total=5402 [2021-05-02 19:05:41,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-05-02 19:05:41,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2021-05-02 19:05:41,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 64 states have (on average 1.09375) internal successors, (70), 66 states have internal predecessors, (70), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:05:41,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 81 transitions. [2021-05-02 19:05:41,640 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 81 transitions. Word has length 61 [2021-05-02 19:05:41,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:05:41,640 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 81 transitions. [2021-05-02 19:05:41,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 48 states, 48 states have (on average 1.9583333333333333) internal successors, (94), 47 states have internal predecessors, (94), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:41,640 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 81 transitions. [2021-05-02 19:05:41,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-05-02 19:05:41,641 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:05:41,641 INFO L523 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:05:41,855 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:41,856 INFO L428 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:05:41,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:05:41,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1788334161, now seen corresponding path program 14 times [2021-05-02 19:05:41,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:05:41,856 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784371530] [2021-05-02 19:05:41,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:05:41,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:41,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:05:41,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:41,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:05:41,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:42,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-05-02 19:05:42,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:42,135 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 64 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:42,135 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:05:42,135 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784371530] [2021-05-02 19:05:42,135 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784371530] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:42,135 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103554769] [2021-05-02 19:05:42,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:42,172 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 19:05:42,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:05:42,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 24 conjunts are in the unsatisfiable core [2021-05-02 19:05:42,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:05:42,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:42,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:42,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:42,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:42,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:42,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:42,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:42,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:42,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:42,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:42,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:42,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:42,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:42,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:42,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:42,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:42,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:42,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:42,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:42,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:42,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:42,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:42,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:42,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:42,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:42,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:42,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:42,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:42,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:42,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:42,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:42,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:42,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:42,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:42,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:42,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:42,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:42,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:42,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:42,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:42,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:42,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:42,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:42,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:42,613 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 64 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:42,614 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103554769] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:42,614 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:05:42,614 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 25] total 48 [2021-05-02 19:05:42,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730813994] [2021-05-02 19:05:42,614 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-05-02 19:05:42,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:05:42,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-05-02 19:05:42,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=389, Invalid=1867, Unknown=0, NotChecked=0, Total=2256 [2021-05-02 19:05:42,615 INFO L87 Difference]: Start difference. First operand 76 states and 81 transitions. Second operand has 48 states, 48 states have (on average 2.0416666666666665) internal successors, (98), 47 states have internal predecessors, (98), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:43,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:05:43,477 INFO L93 Difference]: Finished difference Result 85 states and 90 transitions. [2021-05-02 19:05:43,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-02 19:05:43,478 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.0416666666666665) internal successors, (98), 47 states have internal predecessors, (98), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 63 [2021-05-02 19:05:43,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:05:43,478 INFO L225 Difference]: With dead ends: 85 [2021-05-02 19:05:43,478 INFO L226 Difference]: Without dead ends: 79 [2021-05-02 19:05:43,479 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1882 ImplicationChecksByTransitivity, 1158.1ms TimeCoverageRelationStatistics Valid=809, Invalid=4161, Unknown=0, NotChecked=0, Total=4970 [2021-05-02 19:05:43,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-05-02 19:05:43,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2021-05-02 19:05:43,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 63 states have (on average 1.0793650793650793) internal successors, (68), 65 states have internal predecessors, (68), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:05:43,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2021-05-02 19:05:43,481 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 63 [2021-05-02 19:05:43,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:05:43,481 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2021-05-02 19:05:43,481 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 48 states, 48 states have (on average 2.0416666666666665) internal successors, (98), 47 states have internal predecessors, (98), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:43,481 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2021-05-02 19:05:43,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-05-02 19:05:43,481 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:05:43,481 INFO L523 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:05:43,697 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-05-02 19:05:43,697 INFO L428 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:05:43,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:05:43,697 INFO L82 PathProgramCache]: Analyzing trace with hash -627512284, now seen corresponding path program 14 times [2021-05-02 19:05:43,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:05:43,697 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615511414] [2021-05-02 19:05:43,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:05:43,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:43,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:05:43,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:43,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:05:43,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:43,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-05-02 19:05:43,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:44,020 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 64 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:44,021 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:05:44,021 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615511414] [2021-05-02 19:05:44,021 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615511414] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:44,021 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257711415] [2021-05-02 19:05:44,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:44,058 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 19:05:44,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:05:44,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 24 conjunts are in the unsatisfiable core [2021-05-02 19:05:44,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:05:44,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:44,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:44,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:44,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:44,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:44,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:44,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:44,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:44,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:44,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:44,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:44,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:44,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:44,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:44,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:44,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:44,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:44,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:44,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:44,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:44,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:44,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:44,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:44,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:44,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:44,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:44,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:44,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:44,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:44,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:44,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:44,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:44,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:44,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:44,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:44,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:44,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:44,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:44,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:44,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:44,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:44,471 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 64 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:44,471 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257711415] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:44,471 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:05:44,472 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 25] total 48 [2021-05-02 19:05:44,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955029927] [2021-05-02 19:05:44,472 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-05-02 19:05:44,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:05:44,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-05-02 19:05:44,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=389, Invalid=1867, Unknown=0, NotChecked=0, Total=2256 [2021-05-02 19:05:44,472 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand has 48 states, 48 states have (on average 2.0416666666666665) internal successors, (98), 47 states have internal predecessors, (98), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:45,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:05:45,334 INFO L93 Difference]: Finished difference Result 79 states and 82 transitions. [2021-05-02 19:05:45,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-02 19:05:45,335 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.0416666666666665) internal successors, (98), 47 states have internal predecessors, (98), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 63 [2021-05-02 19:05:45,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:05:45,335 INFO L225 Difference]: With dead ends: 79 [2021-05-02 19:05:45,335 INFO L226 Difference]: Without dead ends: 75 [2021-05-02 19:05:45,336 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1757 ImplicationChecksByTransitivity, 1190.9ms TimeCoverageRelationStatistics Valid=809, Invalid=4161, Unknown=0, NotChecked=0, Total=4970 [2021-05-02 19:05:45,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-05-02 19:05:45,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2021-05-02 19:05:45,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 62 states have (on average 1.064516129032258) internal successors, (66), 64 states have internal predecessors, (66), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:05:45,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2021-05-02 19:05:45,337 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 63 [2021-05-02 19:05:45,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:05:45,337 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2021-05-02 19:05:45,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 48 states, 48 states have (on average 2.0416666666666665) internal successors, (98), 47 states have internal predecessors, (98), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:45,337 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2021-05-02 19:05:45,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-05-02 19:05:45,338 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:05:45,338 INFO L523 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:05:45,552 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:45,553 INFO L428 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:05:45,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:05:45,553 INFO L82 PathProgramCache]: Analyzing trace with hash 300019338, now seen corresponding path program 15 times [2021-05-02 19:05:45,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:05:45,553 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900776638] [2021-05-02 19:05:45,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:05:45,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:45,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:05:45,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:45,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:05:45,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:45,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-05-02 19:05:45,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:45,864 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 81 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:45,864 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:05:45,864 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900776638] [2021-05-02 19:05:45,864 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900776638] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:45,864 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133841967] [2021-05-02 19:05:45,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:45,909 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-05-02 19:05:45,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:05:45,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 27 conjunts are in the unsatisfiable core [2021-05-02 19:05:45,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:05:45,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:45,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:45,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:45,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:45,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:45,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:46,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:46,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:46,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:46,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:46,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:46,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:46,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:46,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:46,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:46,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:46,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:46,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:46,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:46,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:46,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:46,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:46,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:46,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:46,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:46,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:46,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:46,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:46,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:46,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:46,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:46,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:46,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:46,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:46,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:46,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:46,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:46,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:46,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:46,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:46,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:46,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:46,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:46,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:46,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:46,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:46,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:46,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:46,408 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 81 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:46,408 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133841967] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:46,408 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:05:46,408 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28] total 52 [2021-05-02 19:05:46,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687062847] [2021-05-02 19:05:46,409 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-05-02 19:05:46,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:05:46,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-05-02 19:05:46,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=457, Invalid=2195, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 19:05:46,409 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand has 52 states, 52 states have (on average 1.9615384615384615) internal successors, (102), 51 states have internal predecessors, (102), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:47,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:05:47,617 INFO L93 Difference]: Finished difference Result 92 states and 99 transitions. [2021-05-02 19:05:47,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-02 19:05:47,617 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.9615384615384615) internal successors, (102), 51 states have internal predecessors, (102), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 65 [2021-05-02 19:05:47,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:05:47,618 INFO L225 Difference]: With dead ends: 92 [2021-05-02 19:05:47,618 INFO L226 Difference]: Without dead ends: 87 [2021-05-02 19:05:47,618 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2318 ImplicationChecksByTransitivity, 1521.9ms TimeCoverageRelationStatistics Valid=992, Invalid=5328, Unknown=0, NotChecked=0, Total=6320 [2021-05-02 19:05:47,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-05-02 19:05:47,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 77. [2021-05-02 19:05:47,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 65 states have (on average 1.0769230769230769) internal successors, (70), 67 states have internal predecessors, (70), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:05:47,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2021-05-02 19:05:47,620 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 65 [2021-05-02 19:05:47,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:05:47,620 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2021-05-02 19:05:47,620 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 52 states, 52 states have (on average 1.9615384615384615) internal successors, (102), 51 states have internal predecessors, (102), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:47,620 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2021-05-02 19:05:47,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-05-02 19:05:47,621 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:05:47,621 INFO L523 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:05:47,836 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:47,836 INFO L428 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:05:47,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:05:47,836 INFO L82 PathProgramCache]: Analyzing trace with hash -237193240, now seen corresponding path program 15 times [2021-05-02 19:05:47,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:05:47,837 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340967324] [2021-05-02 19:05:47,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:05:47,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:47,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:05:47,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:47,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:05:47,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:47,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-05-02 19:05:47,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:48,189 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 81 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:48,189 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:05:48,189 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340967324] [2021-05-02 19:05:48,189 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340967324] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:48,189 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964751870] [2021-05-02 19:05:48,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:48,232 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-05-02 19:05:48,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:05:48,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 27 conjunts are in the unsatisfiable core [2021-05-02 19:05:48,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:05:48,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:48,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:48,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:48,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:48,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:48,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:48,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:48,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:48,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:48,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:48,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:48,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:48,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:48,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:48,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:48,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:48,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:48,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:48,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:48,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:48,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:48,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:48,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:48,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:48,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:48,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:48,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:48,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:48,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:48,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:48,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:48,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:48,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:48,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:48,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:48,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:48,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:48,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:48,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:48,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:48,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:48,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:48,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:48,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:48,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:48,761 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 81 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:48,761 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964751870] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:48,761 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:05:48,762 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28] total 52 [2021-05-02 19:05:48,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886304757] [2021-05-02 19:05:48,762 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-05-02 19:05:48,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:05:48,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-05-02 19:05:48,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=457, Invalid=2195, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 19:05:48,763 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand has 52 states, 52 states have (on average 1.9615384615384615) internal successors, (102), 51 states have internal predecessors, (102), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:49,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:05:49,905 INFO L93 Difference]: Finished difference Result 87 states and 92 transitions. [2021-05-02 19:05:49,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-02 19:05:49,906 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.9615384615384615) internal successors, (102), 51 states have internal predecessors, (102), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 65 [2021-05-02 19:05:49,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:05:49,906 INFO L225 Difference]: With dead ends: 87 [2021-05-02 19:05:49,906 INFO L226 Difference]: Without dead ends: 84 [2021-05-02 19:05:49,907 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2239 ImplicationChecksByTransitivity, 1572.0ms TimeCoverageRelationStatistics Valid=992, Invalid=5328, Unknown=0, NotChecked=0, Total=6320 [2021-05-02 19:05:49,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-05-02 19:05:49,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 80. [2021-05-02 19:05:49,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 68 states have (on average 1.088235294117647) internal successors, (74), 70 states have internal predecessors, (74), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:05:49,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 85 transitions. [2021-05-02 19:05:49,909 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 85 transitions. Word has length 65 [2021-05-02 19:05:49,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:05:49,909 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 85 transitions. [2021-05-02 19:05:49,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 52 states, 52 states have (on average 1.9615384615384615) internal successors, (102), 51 states have internal predecessors, (102), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:49,909 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 85 transitions. [2021-05-02 19:05:49,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-05-02 19:05:49,910 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:05:49,910 INFO L523 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:05:50,116 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2021-05-02 19:05:50,117 INFO L428 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:05:50,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:05:50,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1744968974, now seen corresponding path program 16 times [2021-05-02 19:05:50,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:05:50,117 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541396028] [2021-05-02 19:05:50,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:05:50,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:50,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:05:50,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:50,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:05:50,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:50,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-05-02 19:05:50,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:50,444 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 81 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:50,444 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:05:50,444 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541396028] [2021-05-02 19:05:50,444 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541396028] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:50,444 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84321735] [2021-05-02 19:05:50,444 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:50,512 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 19:05:50,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:05:50,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 26 conjunts are in the unsatisfiable core [2021-05-02 19:05:50,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:05:50,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:50,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:50,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:50,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:50,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:50,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:50,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:50,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:50,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:50,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:50,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:50,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:50,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:50,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:50,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:50,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:50,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:50,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:50,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:50,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:50,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:50,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:50,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:50,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:50,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:50,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:50,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:50,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:50,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:50,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:50,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:50,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:50,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:50,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:50,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:50,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:50,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:50,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:50,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:50,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:50,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:50,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:50,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:50,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:50,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:50,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:50,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:50,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:50,984 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 81 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:50,984 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84321735] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:50,984 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:05:50,984 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 27] total 52 [2021-05-02 19:05:50,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203781238] [2021-05-02 19:05:50,985 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-05-02 19:05:50,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:05:50,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-05-02 19:05:50,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=459, Invalid=2193, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 19:05:50,985 INFO L87 Difference]: Start difference. First operand 80 states and 85 transitions. Second operand has 52 states, 52 states have (on average 2.0384615384615383) internal successors, (106), 51 states have internal predecessors, (106), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:52,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:05:52,069 INFO L93 Difference]: Finished difference Result 89 states and 94 transitions. [2021-05-02 19:05:52,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-02 19:05:52,069 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.0384615384615383) internal successors, (106), 51 states have internal predecessors, (106), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 67 [2021-05-02 19:05:52,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:05:52,070 INFO L225 Difference]: With dead ends: 89 [2021-05-02 19:05:52,070 INFO L226 Difference]: Without dead ends: 83 [2021-05-02 19:05:52,070 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2258 ImplicationChecksByTransitivity, 1307.0ms TimeCoverageRelationStatistics Valid=952, Invalid=4900, Unknown=0, NotChecked=0, Total=5852 [2021-05-02 19:05:52,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-05-02 19:05:52,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2021-05-02 19:05:52,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 67 states have (on average 1.0746268656716418) internal successors, (72), 69 states have internal predecessors, (72), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:05:52,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2021-05-02 19:05:52,072 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 67 [2021-05-02 19:05:52,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:05:52,072 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2021-05-02 19:05:52,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 52 states, 52 states have (on average 2.0384615384615383) internal successors, (106), 51 states have internal predecessors, (106), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:52,072 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2021-05-02 19:05:52,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-05-02 19:05:52,073 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:05:52,073 INFO L523 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:05:52,281 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:52,282 INFO L428 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:05:52,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:05:52,282 INFO L82 PathProgramCache]: Analyzing trace with hash 592792707, now seen corresponding path program 16 times [2021-05-02 19:05:52,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:05:52,282 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968406204] [2021-05-02 19:05:52,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:05:52,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:52,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:05:52,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:52,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:05:52,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:52,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-05-02 19:05:52,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:52,665 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 81 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:52,665 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:05:52,665 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968406204] [2021-05-02 19:05:52,665 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968406204] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:52,665 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685238093] [2021-05-02 19:05:52,665 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:52,703 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 19:05:52,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:05:52,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 26 conjunts are in the unsatisfiable core [2021-05-02 19:05:52,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:05:52,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:52,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:52,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:52,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:52,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:52,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:52,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:52,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:52,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:52,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:52,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:52,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:52,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:52,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:52,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:52,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:52,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:52,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:52,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:52,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:52,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:52,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:52,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:52,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:52,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:52,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:52,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:52,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:52,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:52,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:53,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:53,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:53,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:53,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:53,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:53,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:53,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:53,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:53,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:53,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:53,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:53,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:53,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:53,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:53,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:53,179 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 81 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:53,179 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685238093] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:53,180 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:05:53,180 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 27] total 52 [2021-05-02 19:05:53,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058453018] [2021-05-02 19:05:53,180 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-05-02 19:05:53,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:05:53,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-05-02 19:05:53,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=459, Invalid=2193, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 19:05:53,181 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand has 52 states, 52 states have (on average 2.0384615384615383) internal successors, (106), 51 states have internal predecessors, (106), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:54,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:05:54,160 INFO L93 Difference]: Finished difference Result 83 states and 86 transitions. [2021-05-02 19:05:54,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-02 19:05:54,160 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.0384615384615383) internal successors, (106), 51 states have internal predecessors, (106), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 67 [2021-05-02 19:05:54,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:05:54,161 INFO L225 Difference]: With dead ends: 83 [2021-05-02 19:05:54,161 INFO L226 Difference]: Without dead ends: 79 [2021-05-02 19:05:54,161 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2109 ImplicationChecksByTransitivity, 1353.8ms TimeCoverageRelationStatistics Valid=952, Invalid=4900, Unknown=0, NotChecked=0, Total=5852 [2021-05-02 19:05:54,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-05-02 19:05:54,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2021-05-02 19:05:54,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 66 states have (on average 1.0606060606060606) internal successors, (70), 68 states have internal predecessors, (70), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:05:54,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 81 transitions. [2021-05-02 19:05:54,163 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 81 transitions. Word has length 67 [2021-05-02 19:05:54,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:05:54,163 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 81 transitions. [2021-05-02 19:05:54,163 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 52 states, 52 states have (on average 2.0384615384615383) internal successors, (106), 51 states have internal predecessors, (106), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:54,163 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 81 transitions. [2021-05-02 19:05:54,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-02 19:05:54,164 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:05:54,164 INFO L523 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:05:54,364 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-05-02 19:05:54,364 INFO L428 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:05:54,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:05:54,365 INFO L82 PathProgramCache]: Analyzing trace with hash 487043881, now seen corresponding path program 17 times [2021-05-02 19:05:54,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:05:54,365 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353354647] [2021-05-02 19:05:54,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:05:54,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:54,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:05:54,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:54,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:05:54,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:54,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-05-02 19:05:54,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:54,741 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 100 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:54,741 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:05:54,741 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353354647] [2021-05-02 19:05:54,742 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353354647] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:54,742 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481881401] [2021-05-02 19:05:54,742 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:54,781 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-05-02 19:05:54,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:05:54,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 29 conjunts are in the unsatisfiable core [2021-05-02 19:05:54,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:05:54,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:54,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:54,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:54,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:54,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:54,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:54,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:54,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:54,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:54,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:54,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:54,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:54,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:54,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:54,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:54,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:55,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:55,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:55,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:55,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:55,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:55,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:55,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:55,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:55,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:55,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:55,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:55,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:55,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:55,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:55,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:55,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:55,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:55,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:55,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:55,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:55,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:55,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:55,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:55,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:55,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:55,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:55,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:55,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:55,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:55,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:55,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:55,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:55,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:55,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:55,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:55,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:55,337 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 100 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:55,337 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481881401] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:55,338 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:05:55,338 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30] total 56 [2021-05-02 19:05:55,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937425765] [2021-05-02 19:05:55,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 56 states [2021-05-02 19:05:55,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:05:55,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-05-02 19:05:55,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=533, Invalid=2547, Unknown=0, NotChecked=0, Total=3080 [2021-05-02 19:05:55,339 INFO L87 Difference]: Start difference. First operand 78 states and 81 transitions. Second operand has 56 states, 56 states have (on average 1.9642857142857142) internal successors, (110), 55 states have internal predecessors, (110), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:56,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:05:56,540 INFO L93 Difference]: Finished difference Result 96 states and 103 transitions. [2021-05-02 19:05:56,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-02 19:05:56,547 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.9642857142857142) internal successors, (110), 55 states have internal predecessors, (110), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 69 [2021-05-02 19:05:56,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:05:56,547 INFO L225 Difference]: With dead ends: 96 [2021-05-02 19:05:56,547 INFO L226 Difference]: Without dead ends: 91 [2021-05-02 19:05:56,548 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2733 ImplicationChecksByTransitivity, 1689.4ms TimeCoverageRelationStatistics Valid=1148, Invalid=6162, Unknown=0, NotChecked=0, Total=7310 [2021-05-02 19:05:56,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-05-02 19:05:56,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 81. [2021-05-02 19:05:56,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 69 states have (on average 1.0724637681159421) internal successors, (74), 71 states have internal predecessors, (74), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:05:56,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2021-05-02 19:05:56,550 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 69 [2021-05-02 19:05:56,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:05:56,550 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2021-05-02 19:05:56,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 56 states, 56 states have (on average 1.9642857142857142) internal successors, (110), 55 states have internal predecessors, (110), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:56,550 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2021-05-02 19:05:56,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-02 19:05:56,550 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:05:56,550 INFO L523 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:05:56,757 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:56,757 INFO L428 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:05:56,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:05:56,757 INFO L82 PathProgramCache]: Analyzing trace with hash -367664953, now seen corresponding path program 17 times [2021-05-02 19:05:56,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:05:56,757 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596061281] [2021-05-02 19:05:56,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:05:56,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:56,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:05:56,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:56,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:05:56,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:56,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-05-02 19:05:56,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:57,159 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 100 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:57,159 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:05:57,159 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596061281] [2021-05-02 19:05:57,159 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596061281] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:57,159 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934334552] [2021-05-02 19:05:57,159 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:57,198 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-05-02 19:05:57,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:05:57,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 29 conjunts are in the unsatisfiable core [2021-05-02 19:05:57,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:05:57,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:57,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:57,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:57,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:57,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:57,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:57,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:57,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:57,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:57,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:57,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:57,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:57,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:57,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:57,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:57,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:57,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:57,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:57,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:57,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:57,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:57,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:57,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:57,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:57,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:57,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:57,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:57,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:57,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:57,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:57,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:57,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:57,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:57,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:57,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:57,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:57,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:57,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:57,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:57,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:57,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:57,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:57,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:57,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:57,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:57,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:57,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:57,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:57,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:57,788 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 100 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:57,788 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934334552] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:57,788 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:05:57,788 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30] total 56 [2021-05-02 19:05:57,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706526839] [2021-05-02 19:05:57,788 INFO L460 AbstractCegarLoop]: Interpolant automaton has 56 states [2021-05-02 19:05:57,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:05:57,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-05-02 19:05:57,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=533, Invalid=2547, Unknown=0, NotChecked=0, Total=3080 [2021-05-02 19:05:57,789 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand has 56 states, 56 states have (on average 1.9642857142857142) internal successors, (110), 55 states have internal predecessors, (110), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:59,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:05:59,023 INFO L93 Difference]: Finished difference Result 91 states and 96 transitions. [2021-05-02 19:05:59,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-02 19:05:59,024 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.9642857142857142) internal successors, (110), 55 states have internal predecessors, (110), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 69 [2021-05-02 19:05:59,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:05:59,024 INFO L225 Difference]: With dead ends: 91 [2021-05-02 19:05:59,024 INFO L226 Difference]: Without dead ends: 88 [2021-05-02 19:05:59,024 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2635 ImplicationChecksByTransitivity, 1722.4ms TimeCoverageRelationStatistics Valid=1148, Invalid=6162, Unknown=0, NotChecked=0, Total=7310 [2021-05-02 19:05:59,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-05-02 19:05:59,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2021-05-02 19:05:59,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 72 states have (on average 1.0833333333333333) internal successors, (78), 74 states have internal predecessors, (78), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:05:59,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 89 transitions. [2021-05-02 19:05:59,026 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 89 transitions. Word has length 69 [2021-05-02 19:05:59,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:05:59,026 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 89 transitions. [2021-05-02 19:05:59,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 56 states, 56 states have (on average 1.9642857142857142) internal successors, (110), 55 states have internal predecessors, (110), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:05:59,027 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 89 transitions. [2021-05-02 19:05:59,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-05-02 19:05:59,027 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:05:59,027 INFO L523 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:05:59,228 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,37 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:59,228 INFO L428 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:05:59,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:05:59,228 INFO L82 PathProgramCache]: Analyzing trace with hash 915704365, now seen corresponding path program 18 times [2021-05-02 19:05:59,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:05:59,229 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458590550] [2021-05-02 19:05:59,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:05:59,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:59,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:05:59,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:59,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:05:59,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:59,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-05-02 19:05:59,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:59,616 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 100 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:59,616 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:05:59,616 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458590550] [2021-05-02 19:05:59,616 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458590550] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:59,616 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383156158] [2021-05-02 19:05:59,617 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:05:59,661 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2021-05-02 19:05:59,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:05:59,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 28 conjunts are in the unsatisfiable core [2021-05-02 19:05:59,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:05:59,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:59,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:59,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:59,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:59,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:59,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:59,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:59,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:59,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:59,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:59,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:59,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:59,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:59,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:59,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:59,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:59,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:59,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:59,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:59,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:59,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:59,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:59,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:59,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:59,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:59,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:59,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:59,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:59,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:59,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:00,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:00,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:00,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:00,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:00,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:00,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:00,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:00,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:00,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:00,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:00,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:00,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:00,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:00,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:00,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:00,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:00,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:00,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:00,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:00,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:00,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:00,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:00,227 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 100 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:06:00,227 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383156158] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:06:00,227 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:06:00,227 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 29] total 56 [2021-05-02 19:06:00,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846884857] [2021-05-02 19:06:00,227 INFO L460 AbstractCegarLoop]: Interpolant automaton has 56 states [2021-05-02 19:06:00,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:06:00,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-05-02 19:06:00,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=535, Invalid=2545, Unknown=0, NotChecked=0, Total=3080 [2021-05-02 19:06:00,228 INFO L87 Difference]: Start difference. First operand 84 states and 89 transitions. Second operand has 56 states, 56 states have (on average 2.0357142857142856) internal successors, (114), 55 states have internal predecessors, (114), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:06:01,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:06:01,333 INFO L93 Difference]: Finished difference Result 93 states and 98 transitions. [2021-05-02 19:06:01,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-02 19:06:01,333 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.0357142857142856) internal successors, (114), 55 states have internal predecessors, (114), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 71 [2021-05-02 19:06:01,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:06:01,334 INFO L225 Difference]: With dead ends: 93 [2021-05-02 19:06:01,334 INFO L226 Difference]: Without dead ends: 87 [2021-05-02 19:06:01,334 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2668 ImplicationChecksByTransitivity, 1492.5ms TimeCoverageRelationStatistics Valid=1107, Invalid=5699, Unknown=0, NotChecked=0, Total=6806 [2021-05-02 19:06:01,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-05-02 19:06:01,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 83. [2021-05-02 19:06:01,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 71 states have (on average 1.0704225352112675) internal successors, (76), 73 states have internal predecessors, (76), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:06:01,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2021-05-02 19:06:01,336 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 71 [2021-05-02 19:06:01,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:06:01,336 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2021-05-02 19:06:01,336 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 56 states, 56 states have (on average 2.0357142857142856) internal successors, (114), 55 states have internal predecessors, (114), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:06:01,336 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2021-05-02 19:06:01,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-05-02 19:06:01,337 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:06:01,337 INFO L523 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:06:01,548 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2021-05-02 19:06:01,549 INFO L428 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:06:01,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:06:01,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1765371042, now seen corresponding path program 18 times [2021-05-02 19:06:01,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:06:01,549 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206897170] [2021-05-02 19:06:01,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:06:01,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:01,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:06:01,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:01,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:06:01,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:01,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-05-02 19:06:01,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:01,940 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 100 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:06:01,940 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:06:01,940 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206897170] [2021-05-02 19:06:01,940 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206897170] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:06:01,940 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379212623] [2021-05-02 19:06:01,940 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:06:01,985 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2021-05-02 19:06:01,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:06:01,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 28 conjunts are in the unsatisfiable core [2021-05-02 19:06:01,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:06:02,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:02,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:02,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:02,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:02,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:02,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:02,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:02,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:02,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:02,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:02,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:02,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:02,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:02,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:02,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:02,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:02,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:02,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:02,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:02,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:02,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:02,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:02,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:02,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:02,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:02,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:02,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:02,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:02,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:02,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:02,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:02,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:02,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:02,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:02,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:02,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:02,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:02,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:02,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:02,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:02,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:02,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:02,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:02,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:02,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:02,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:02,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:02,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:02,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:02,506 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 100 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:06:02,507 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379212623] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:06:02,507 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:06:02,507 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 29] total 56 [2021-05-02 19:06:02,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962927095] [2021-05-02 19:06:02,507 INFO L460 AbstractCegarLoop]: Interpolant automaton has 56 states [2021-05-02 19:06:02,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:06:02,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-05-02 19:06:02,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=535, Invalid=2545, Unknown=0, NotChecked=0, Total=3080 [2021-05-02 19:06:02,508 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand has 56 states, 56 states have (on average 2.0357142857142856) internal successors, (114), 55 states have internal predecessors, (114), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:06:03,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:06:03,621 INFO L93 Difference]: Finished difference Result 87 states and 90 transitions. [2021-05-02 19:06:03,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-02 19:06:03,621 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.0357142857142856) internal successors, (114), 55 states have internal predecessors, (114), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 71 [2021-05-02 19:06:03,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:06:03,622 INFO L225 Difference]: With dead ends: 87 [2021-05-02 19:06:03,622 INFO L226 Difference]: Without dead ends: 83 [2021-05-02 19:06:03,622 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2493 ImplicationChecksByTransitivity, 1506.7ms TimeCoverageRelationStatistics Valid=1107, Invalid=5699, Unknown=0, NotChecked=0, Total=6806 [2021-05-02 19:06:03,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-05-02 19:06:03,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2021-05-02 19:06:03,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 70 states have (on average 1.0571428571428572) internal successors, (74), 72 states have internal predecessors, (74), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:06:03,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 85 transitions. [2021-05-02 19:06:03,624 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 85 transitions. Word has length 71 [2021-05-02 19:06:03,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:06:03,624 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 85 transitions. [2021-05-02 19:06:03,624 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 56 states, 56 states have (on average 2.0357142857142856) internal successors, (114), 55 states have internal predecessors, (114), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:06:03,624 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 85 transitions. [2021-05-02 19:06:03,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-05-02 19:06:03,624 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:06:03,624 INFO L523 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:06:03,856 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:06:03,857 INFO L428 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:06:03,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:06:03,857 INFO L82 PathProgramCache]: Analyzing trace with hash 2053392264, now seen corresponding path program 19 times [2021-05-02 19:06:03,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:06:03,857 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487234226] [2021-05-02 19:06:03,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:06:03,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:03,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:06:03,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:03,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:06:03,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:04,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-05-02 19:06:04,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:04,240 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 121 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:06:04,241 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:06:04,241 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487234226] [2021-05-02 19:06:04,241 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487234226] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:06:04,241 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722508167] [2021-05-02 19:06:04,241 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:06:04,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:04,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 31 conjunts are in the unsatisfiable core [2021-05-02 19:06:04,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:06:04,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:04,902 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 121 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:06:04,902 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722508167] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:06:04,902 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:06:04,902 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32] total 60 [2021-05-02 19:06:04,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314542779] [2021-05-02 19:06:04,903 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states [2021-05-02 19:06:04,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:06:04,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-05-02 19:06:04,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=615, Invalid=2925, Unknown=0, NotChecked=0, Total=3540 [2021-05-02 19:06:04,903 INFO L87 Difference]: Start difference. First operand 82 states and 85 transitions. Second operand has 60 states, 60 states have (on average 1.9666666666666666) internal successors, (118), 59 states have internal predecessors, (118), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:06:06,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:06:06,183 INFO L93 Difference]: Finished difference Result 100 states and 107 transitions. [2021-05-02 19:06:06,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-02 19:06:06,184 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.9666666666666666) internal successors, (118), 59 states have internal predecessors, (118), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 73 [2021-05-02 19:06:06,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:06:06,184 INFO L225 Difference]: With dead ends: 100 [2021-05-02 19:06:06,184 INFO L226 Difference]: Without dead ends: 95 [2021-05-02 19:06:06,186 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3182 ImplicationChecksByTransitivity, 1830.6ms TimeCoverageRelationStatistics Valid=1316, Invalid=7056, Unknown=0, NotChecked=0, Total=8372 [2021-05-02 19:06:06,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-05-02 19:06:06,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 85. [2021-05-02 19:06:06,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 73 states have (on average 1.0684931506849316) internal successors, (78), 75 states have internal predecessors, (78), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:06:06,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2021-05-02 19:06:06,188 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 73 [2021-05-02 19:06:06,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:06:06,189 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2021-05-02 19:06:06,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 60 states, 60 states have (on average 1.9666666666666666) internal successors, (118), 59 states have internal predecessors, (118), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:06:06,189 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2021-05-02 19:06:06,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-05-02 19:06:06,189 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:06:06,189 INFO L523 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:06:06,390 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2021-05-02 19:06:06,390 INFO L428 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:06:06,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:06:06,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1027459430, now seen corresponding path program 19 times [2021-05-02 19:06:06,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:06:06,390 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138504010] [2021-05-02 19:06:06,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:06:06,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:06,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:06:06,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:06,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:06:06,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:06,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-05-02 19:06:06,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:06,833 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 121 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:06:06,834 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:06:06,834 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138504010] [2021-05-02 19:06:06,834 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138504010] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:06:06,834 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537617849] [2021-05-02 19:06:06,834 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:06:06,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:06,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 31 conjunts are in the unsatisfiable core [2021-05-02 19:06:06,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:06:06,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:06,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:06,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:06,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:06,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:06,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:06,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:06,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:06,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:06,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:06,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:06,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:07,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:07,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:07,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:07,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:07,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:07,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:07,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:07,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:07,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:07,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:07,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:07,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:07,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:07,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:07,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:07,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:07,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:07,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:07,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:07,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:07,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:07,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:07,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:07,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:07,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:07,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:07,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:07,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:07,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:07,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:07,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:07,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:07,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:07,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:07,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:07,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:07,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:07,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:07,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:07,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:07,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:07,511 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 121 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:06:07,511 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537617849] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:06:07,512 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:06:07,512 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32] total 60 [2021-05-02 19:06:07,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433090818] [2021-05-02 19:06:07,512 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states [2021-05-02 19:06:07,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:06:07,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-05-02 19:06:07,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=615, Invalid=2925, Unknown=0, NotChecked=0, Total=3540 [2021-05-02 19:06:07,513 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand has 60 states, 60 states have (on average 1.9666666666666666) internal successors, (118), 59 states have internal predecessors, (118), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:06:08,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:06:08,903 INFO L93 Difference]: Finished difference Result 95 states and 100 transitions. [2021-05-02 19:06:08,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-02 19:06:08,903 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.9666666666666666) internal successors, (118), 59 states have internal predecessors, (118), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 73 [2021-05-02 19:06:08,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:06:08,904 INFO L225 Difference]: With dead ends: 95 [2021-05-02 19:06:08,904 INFO L226 Difference]: Without dead ends: 92 [2021-05-02 19:06:08,905 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3063 ImplicationChecksByTransitivity, 1894.1ms TimeCoverageRelationStatistics Valid=1316, Invalid=7056, Unknown=0, NotChecked=0, Total=8372 [2021-05-02 19:06:08,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-05-02 19:06:08,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 88. [2021-05-02 19:06:08,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 76 states have (on average 1.0789473684210527) internal successors, (82), 78 states have internal predecessors, (82), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:06:08,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 93 transitions. [2021-05-02 19:06:08,906 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 93 transitions. Word has length 73 [2021-05-02 19:06:08,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:06:08,906 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 93 transitions. [2021-05-02 19:06:08,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 60 states, 60 states have (on average 1.9666666666666666) internal successors, (118), 59 states have internal predecessors, (118), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:06:08,906 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 93 transitions. [2021-05-02 19:06:08,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-02 19:06:08,907 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:06:08,907 INFO L523 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:06:09,120 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:06:09,121 INFO L428 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:06:09,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:06:09,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1600440076, now seen corresponding path program 20 times [2021-05-02 19:06:09,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:06:09,121 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895842531] [2021-05-02 19:06:09,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:06:09,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:09,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:06:09,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:09,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:06:09,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:09,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-05-02 19:06:09,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:09,518 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 121 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:06:09,518 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:06:09,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895842531] [2021-05-02 19:06:09,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895842531] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:06:09,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585258608] [2021-05-02 19:06:09,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:06:09,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 19:06:09,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:06:09,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 30 conjunts are in the unsatisfiable core [2021-05-02 19:06:09,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:06:09,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:09,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:09,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:09,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:09,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:09,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:09,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:09,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:09,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:09,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:09,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:09,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:09,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:09,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:09,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:09,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:09,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:09,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:09,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:09,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:09,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:09,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:09,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:09,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:09,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:09,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:09,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:09,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:09,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:09,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:09,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:09,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:09,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:09,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:09,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:09,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:09,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:09,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:10,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:10,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:10,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:10,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:10,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:10,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:10,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:10,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:10,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:10,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:10,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:10,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:10,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:10,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:10,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:10,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:10,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:10,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:10,176 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 121 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:06:10,176 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585258608] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:06:10,176 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:06:10,176 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 31] total 60 [2021-05-02 19:06:10,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836821651] [2021-05-02 19:06:10,176 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states [2021-05-02 19:06:10,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:06:10,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-05-02 19:06:10,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=617, Invalid=2923, Unknown=0, NotChecked=0, Total=3540 [2021-05-02 19:06:10,177 INFO L87 Difference]: Start difference. First operand 88 states and 93 transitions. Second operand has 60 states, 60 states have (on average 2.033333333333333) internal successors, (122), 59 states have internal predecessors, (122), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:06:11,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:06:11,330 INFO L93 Difference]: Finished difference Result 97 states and 102 transitions. [2021-05-02 19:06:11,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-05-02 19:06:11,331 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.033333333333333) internal successors, (122), 59 states have internal predecessors, (122), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 75 [2021-05-02 19:06:11,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:06:11,331 INFO L225 Difference]: With dead ends: 97 [2021-05-02 19:06:11,331 INFO L226 Difference]: Without dead ends: 91 [2021-05-02 19:06:11,332 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3112 ImplicationChecksByTransitivity, 1627.1ms TimeCoverageRelationStatistics Valid=1274, Invalid=6558, Unknown=0, NotChecked=0, Total=7832 [2021-05-02 19:06:11,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-05-02 19:06:11,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2021-05-02 19:06:11,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 75 states have (on average 1.0666666666666667) internal successors, (80), 77 states have internal predecessors, (80), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:06:11,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2021-05-02 19:06:11,334 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 75 [2021-05-02 19:06:11,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:06:11,334 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2021-05-02 19:06:11,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 60 states, 60 states have (on average 2.033333333333333) internal successors, (122), 59 states have internal predecessors, (122), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:06:11,334 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2021-05-02 19:06:11,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-02 19:06:11,334 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:06:11,334 INFO L523 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:06:11,535 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,42 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:06:11,535 INFO L428 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:06:11,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:06:11,535 INFO L82 PathProgramCache]: Analyzing trace with hash 2075827329, now seen corresponding path program 20 times [2021-05-02 19:06:11,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:06:11,535 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119502853] [2021-05-02 19:06:11,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:06:11,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:11,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:06:11,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:11,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:06:11,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:11,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-05-02 19:06:11,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:11,976 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 121 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:06:11,976 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:06:11,976 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119502853] [2021-05-02 19:06:11,976 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119502853] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:06:11,976 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527480790] [2021-05-02 19:06:11,976 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:06:12,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 19:06:12,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:06:12,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 30 conjunts are in the unsatisfiable core [2021-05-02 19:06:12,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:06:12,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:12,599 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 121 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:06:12,600 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527480790] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:06:12,600 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:06:12,600 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 31] total 60 [2021-05-02 19:06:12,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633898265] [2021-05-02 19:06:12,600 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states [2021-05-02 19:06:12,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:06:12,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-05-02 19:06:12,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=617, Invalid=2923, Unknown=0, NotChecked=0, Total=3540 [2021-05-02 19:06:12,601 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand has 60 states, 60 states have (on average 2.033333333333333) internal successors, (122), 59 states have internal predecessors, (122), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:06:13,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:06:13,844 INFO L93 Difference]: Finished difference Result 91 states and 94 transitions. [2021-05-02 19:06:13,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-05-02 19:06:13,844 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.033333333333333) internal successors, (122), 59 states have internal predecessors, (122), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 75 [2021-05-02 19:06:13,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:06:13,845 INFO L225 Difference]: With dead ends: 91 [2021-05-02 19:06:13,845 INFO L226 Difference]: Without dead ends: 87 [2021-05-02 19:06:13,845 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2909 ImplicationChecksByTransitivity, 1671.9ms TimeCoverageRelationStatistics Valid=1274, Invalid=6558, Unknown=0, NotChecked=0, Total=7832 [2021-05-02 19:06:13,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-05-02 19:06:13,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2021-05-02 19:06:13,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 74 states have (on average 1.054054054054054) internal successors, (78), 76 states have internal predecessors, (78), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:06:13,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 89 transitions. [2021-05-02 19:06:13,847 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 89 transitions. Word has length 75 [2021-05-02 19:06:13,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:06:13,847 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 89 transitions. [2021-05-02 19:06:13,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 60 states, 60 states have (on average 2.033333333333333) internal successors, (122), 59 states have internal predecessors, (122), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:06:13,847 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 89 transitions. [2021-05-02 19:06:13,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-05-02 19:06:13,847 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:06:13,847 INFO L523 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:06:14,052 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:06:14,053 INFO L428 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:06:14,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:06:14,054 INFO L82 PathProgramCache]: Analyzing trace with hash -245826649, now seen corresponding path program 21 times [2021-05-02 19:06:14,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:06:14,055 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505262240] [2021-05-02 19:06:14,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:06:14,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:14,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:06:14,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:14,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:06:14,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:14,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-05-02 19:06:14,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:14,478 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 144 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:06:14,478 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:06:14,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505262240] [2021-05-02 19:06:14,478 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505262240] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:06:14,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872192475] [2021-05-02 19:06:14,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:06:14,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2021-05-02 19:06:14,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:06:14,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-02 19:06:14,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:06:14,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:14,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:14,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:14,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:14,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:14,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:14,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:14,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:14,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:14,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:14,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:14,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:14,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:14,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:14,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:14,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:14,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:14,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:14,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:14,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:14,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:14,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:14,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:14,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:14,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:14,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:14,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:14,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:14,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:14,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:14,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:14,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:14,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:14,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:14,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:14,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:14,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:14,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:15,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:15,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:15,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:15,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:15,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:15,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:15,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:15,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:15,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:15,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:15,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:15,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:15,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:15,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:15,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:15,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:15,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:15,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:15,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:15,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:15,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:15,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:15,215 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 144 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:06:15,215 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872192475] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:06:15,215 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:06:15,215 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34] total 64 [2021-05-02 19:06:15,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697832441] [2021-05-02 19:06:15,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2021-05-02 19:06:15,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:06:15,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-05-02 19:06:15,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=3329, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 19:06:15,217 INFO L87 Difference]: Start difference. First operand 86 states and 89 transitions. Second operand has 64 states, 64 states have (on average 1.96875) internal successors, (126), 63 states have internal predecessors, (126), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:06:16,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:06:16,729 INFO L93 Difference]: Finished difference Result 104 states and 111 transitions. [2021-05-02 19:06:16,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-02 19:06:16,730 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.96875) internal successors, (126), 63 states have internal predecessors, (126), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 77 [2021-05-02 19:06:16,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:06:16,730 INFO L225 Difference]: With dead ends: 104 [2021-05-02 19:06:16,730 INFO L226 Difference]: Without dead ends: 99 [2021-05-02 19:06:16,731 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3665 ImplicationChecksByTransitivity, 2016.4ms TimeCoverageRelationStatistics Valid=1496, Invalid=8010, Unknown=0, NotChecked=0, Total=9506 [2021-05-02 19:06:16,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-05-02 19:06:16,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 89. [2021-05-02 19:06:16,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 77 states have (on average 1.0649350649350648) internal successors, (82), 79 states have internal predecessors, (82), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:06:16,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2021-05-02 19:06:16,732 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 77 [2021-05-02 19:06:16,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:06:16,733 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2021-05-02 19:06:16,733 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 64 states, 64 states have (on average 1.96875) internal successors, (126), 63 states have internal predecessors, (126), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:06:16,733 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2021-05-02 19:06:16,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-05-02 19:06:16,733 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:06:16,733 INFO L523 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:06:16,949 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:06:16,949 INFO L428 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:06:16,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:06:16,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1685701061, now seen corresponding path program 21 times [2021-05-02 19:06:16,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:06:16,949 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37114925] [2021-05-02 19:06:16,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:06:16,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:16,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:06:16,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:16,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:06:16,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:17,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-05-02 19:06:17,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:17,454 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 144 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:06:17,454 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:06:17,454 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37114925] [2021-05-02 19:06:17,454 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37114925] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:06:17,454 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251437778] [2021-05-02 19:06:17,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:06:17,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2021-05-02 19:06:17,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:06:17,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-02 19:06:17,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:06:17,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:17,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:17,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:17,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:17,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:17,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:17,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:17,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:17,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:17,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:17,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:17,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:17,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:17,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:17,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:17,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:17,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:17,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:17,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:17,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:17,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:17,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:17,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:17,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:17,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:17,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:17,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:17,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:17,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:17,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:17,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:17,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:17,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:17,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:17,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:17,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:17,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:17,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:17,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:17,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:17,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:17,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:17,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:17,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:17,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:17,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:18,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:18,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:18,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:18,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:18,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:18,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:18,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:18,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:18,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:18,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:18,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:18,206 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 144 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:06:18,206 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251437778] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:06:18,206 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:06:18,206 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34] total 64 [2021-05-02 19:06:18,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116527427] [2021-05-02 19:06:18,206 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2021-05-02 19:06:18,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:06:18,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-05-02 19:06:18,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=3329, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 19:06:18,207 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand has 64 states, 64 states have (on average 1.96875) internal successors, (126), 63 states have internal predecessors, (126), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:06:19,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:06:19,638 INFO L93 Difference]: Finished difference Result 99 states and 104 transitions. [2021-05-02 19:06:19,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-02 19:06:19,639 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.96875) internal successors, (126), 63 states have internal predecessors, (126), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 77 [2021-05-02 19:06:19,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:06:19,639 INFO L225 Difference]: With dead ends: 99 [2021-05-02 19:06:19,639 INFO L226 Difference]: Without dead ends: 96 [2021-05-02 19:06:19,640 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3523 ImplicationChecksByTransitivity, 2097.0ms TimeCoverageRelationStatistics Valid=1496, Invalid=8010, Unknown=0, NotChecked=0, Total=9506 [2021-05-02 19:06:19,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-05-02 19:06:19,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 92. [2021-05-02 19:06:19,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 80 states have (on average 1.075) internal successors, (86), 82 states have internal predecessors, (86), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:06:19,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 97 transitions. [2021-05-02 19:06:19,642 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 97 transitions. Word has length 77 [2021-05-02 19:06:19,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:06:19,642 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 97 transitions. [2021-05-02 19:06:19,642 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 64 states, 64 states have (on average 1.96875) internal successors, (126), 63 states have internal predecessors, (126), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:06:19,642 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 97 transitions. [2021-05-02 19:06:19,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-05-02 19:06:19,642 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:06:19,642 INFO L523 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:06:19,858 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2021-05-02 19:06:19,858 INFO L428 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:06:19,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:06:19,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1484512341, now seen corresponding path program 22 times [2021-05-02 19:06:19,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:06:19,858 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856562089] [2021-05-02 19:06:19,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:06:19,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:19,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:06:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:19,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:06:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:20,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-05-02 19:06:20,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:20,280 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 144 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:06:20,280 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:06:20,280 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856562089] [2021-05-02 19:06:20,280 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856562089] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:06:20,280 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099794680] [2021-05-02 19:06:20,280 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:06:20,321 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 19:06:20,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:06:20,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 32 conjunts are in the unsatisfiable core [2021-05-02 19:06:20,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:06:20,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:20,980 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 144 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:06:20,980 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099794680] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:06:20,980 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:06:20,980 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 33] total 64 [2021-05-02 19:06:20,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263455881] [2021-05-02 19:06:20,981 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2021-05-02 19:06:20,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:06:20,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-05-02 19:06:20,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=3327, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 19:06:20,981 INFO L87 Difference]: Start difference. First operand 92 states and 97 transitions. Second operand has 64 states, 64 states have (on average 2.03125) internal successors, (130), 63 states have internal predecessors, (130), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:06:22,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:06:22,181 INFO L93 Difference]: Finished difference Result 101 states and 106 transitions. [2021-05-02 19:06:22,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-02 19:06:22,181 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.03125) internal successors, (130), 63 states have internal predecessors, (130), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 79 [2021-05-02 19:06:22,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:06:22,182 INFO L225 Difference]: With dead ends: 101 [2021-05-02 19:06:22,182 INFO L226 Difference]: Without dead ends: 95 [2021-05-02 19:06:22,183 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3590 ImplicationChecksByTransitivity, 1798.3ms TimeCoverageRelationStatistics Valid=1453, Invalid=7477, Unknown=0, NotChecked=0, Total=8930 [2021-05-02 19:06:22,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-05-02 19:06:22,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 91. [2021-05-02 19:06:22,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 79 states have (on average 1.0632911392405062) internal successors, (84), 81 states have internal predecessors, (84), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:06:22,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2021-05-02 19:06:22,184 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 79 [2021-05-02 19:06:22,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:06:22,184 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2021-05-02 19:06:22,184 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 64 states, 64 states have (on average 2.03125) internal successors, (130), 63 states have internal predecessors, (130), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:06:22,184 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2021-05-02 19:06:22,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-05-02 19:06:22,185 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:06:22,185 INFO L523 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:06:22,399 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,46 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:06:22,400 INFO L428 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:06:22,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:06:22,400 INFO L82 PathProgramCache]: Analyzing trace with hash 85601312, now seen corresponding path program 22 times [2021-05-02 19:06:22,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:06:22,400 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116120601] [2021-05-02 19:06:22,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:06:22,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:22,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:06:22,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:22,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:06:22,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:22,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-05-02 19:06:22,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:22,901 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 144 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:06:22,902 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:06:22,902 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116120601] [2021-05-02 19:06:22,902 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116120601] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:06:22,902 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611086638] [2021-05-02 19:06:22,902 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:06:22,950 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 19:06:22,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:06:22,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 32 conjunts are in the unsatisfiable core [2021-05-02 19:06:22,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:06:22,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:22,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:23,629 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 144 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:06:23,629 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611086638] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:06:23,629 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:06:23,629 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 33] total 64 [2021-05-02 19:06:23,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490622385] [2021-05-02 19:06:23,630 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2021-05-02 19:06:23,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:06:23,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-05-02 19:06:23,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=3327, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 19:06:23,630 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand has 64 states, 64 states have (on average 2.03125) internal successors, (130), 63 states have internal predecessors, (130), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:06:24,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:06:24,792 INFO L93 Difference]: Finished difference Result 95 states and 98 transitions. [2021-05-02 19:06:24,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-02 19:06:24,793 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.03125) internal successors, (130), 63 states have internal predecessors, (130), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 79 [2021-05-02 19:06:24,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:06:24,793 INFO L225 Difference]: With dead ends: 95 [2021-05-02 19:06:24,793 INFO L226 Difference]: Without dead ends: 91 [2021-05-02 19:06:24,794 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3357 ImplicationChecksByTransitivity, 1883.9ms TimeCoverageRelationStatistics Valid=1453, Invalid=7477, Unknown=0, NotChecked=0, Total=8930 [2021-05-02 19:06:24,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-05-02 19:06:24,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2021-05-02 19:06:24,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 78 states have (on average 1.0512820512820513) internal successors, (82), 80 states have internal predecessors, (82), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:06:24,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 93 transitions. [2021-05-02 19:06:24,795 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 93 transitions. Word has length 79 [2021-05-02 19:06:24,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:06:24,795 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 93 transitions. [2021-05-02 19:06:24,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 64 states, 64 states have (on average 2.03125) internal successors, (130), 63 states have internal predecessors, (130), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:06:24,795 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 93 transitions. [2021-05-02 19:06:24,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-05-02 19:06:24,796 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:06:24,796 INFO L523 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:06:25,007 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable92 [2021-05-02 19:06:25,007 INFO L428 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:06:25,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:06:25,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1592582266, now seen corresponding path program 23 times [2021-05-02 19:06:25,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:06:25,008 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139633799] [2021-05-02 19:06:25,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:06:25,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:25,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:06:25,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:25,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:06:25,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:25,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-05-02 19:06:25,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:25,497 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 169 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:06:25,497 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:06:25,497 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139633799] [2021-05-02 19:06:25,497 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139633799] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:06:25,497 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498431677] [2021-05-02 19:06:25,497 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:06:25,544 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2021-05-02 19:06:25,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:06:25,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 35 conjunts are in the unsatisfiable core [2021-05-02 19:06:25,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:06:25,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:25,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:25,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:25,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:25,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:25,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:25,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:25,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:25,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:25,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:25,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:25,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:25,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:25,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:25,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:25,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:25,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:25,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:25,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:25,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:25,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:25,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:25,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:25,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:25,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:25,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:25,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:25,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:25,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:25,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:26,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:26,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:26,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:26,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:26,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:26,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:26,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:26,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:26,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:26,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:26,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:26,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:26,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:26,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:26,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:26,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:26,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:26,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:26,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:26,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:26,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:26,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:26,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:26,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:26,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:26,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:26,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:26,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:26,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:26,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:26,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:26,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:26,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:26,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:26,328 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 169 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:06:26,328 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498431677] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:06:26,328 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:06:26,328 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36] total 68 [2021-05-02 19:06:26,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103300559] [2021-05-02 19:06:26,328 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states [2021-05-02 19:06:26,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:06:26,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-05-02 19:06:26,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=797, Invalid=3759, Unknown=0, NotChecked=0, Total=4556 [2021-05-02 19:06:26,329 INFO L87 Difference]: Start difference. First operand 90 states and 93 transitions. Second operand has 68 states, 68 states have (on average 1.9705882352941178) internal successors, (134), 67 states have internal predecessors, (134), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:06:28,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:06:28,135 INFO L93 Difference]: Finished difference Result 108 states and 115 transitions. [2021-05-02 19:06:28,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-02 19:06:28,135 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.9705882352941178) internal successors, (134), 67 states have internal predecessors, (134), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 81 [2021-05-02 19:06:28,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:06:28,136 INFO L225 Difference]: With dead ends: 108 [2021-05-02 19:06:28,136 INFO L226 Difference]: Without dead ends: 103 [2021-05-02 19:06:28,136 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4182 ImplicationChecksByTransitivity, 2275.5ms TimeCoverageRelationStatistics Valid=1688, Invalid=9024, Unknown=0, NotChecked=0, Total=10712 [2021-05-02 19:06:28,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-05-02 19:06:28,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 93. [2021-05-02 19:06:28,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 81 states have (on average 1.0617283950617284) internal successors, (86), 83 states have internal predecessors, (86), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:06:28,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2021-05-02 19:06:28,138 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 81 [2021-05-02 19:06:28,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:06:28,138 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2021-05-02 19:06:28,138 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 68 states, 68 states have (on average 1.9705882352941178) internal successors, (134), 67 states have internal predecessors, (134), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:06:28,138 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2021-05-02 19:06:28,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-05-02 19:06:28,139 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:06:28,139 INFO L523 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:06:28,339 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:06:28,339 INFO L428 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:06:28,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:06:28,340 INFO L82 PathProgramCache]: Analyzing trace with hash -809821724, now seen corresponding path program 23 times [2021-05-02 19:06:28,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:06:28,340 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585285479] [2021-05-02 19:06:28,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:06:28,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:28,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:06:28,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:28,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:06:28,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:28,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-05-02 19:06:28,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:28,868 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 169 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:06:28,868 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:06:28,868 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585285479] [2021-05-02 19:06:28,868 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585285479] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:06:28,868 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784509545] [2021-05-02 19:06:28,868 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:06:28,909 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2021-05-02 19:06:28,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:06:28,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 35 conjunts are in the unsatisfiable core [2021-05-02 19:06:28,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:06:28,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:28,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:28,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:28,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:28,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:28,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:28,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:28,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:29,719 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 169 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:06:29,720 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784509545] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:06:29,720 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:06:29,720 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36] total 68 [2021-05-02 19:06:29,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898277655] [2021-05-02 19:06:29,720 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states [2021-05-02 19:06:29,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:06:29,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-05-02 19:06:29,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=797, Invalid=3759, Unknown=0, NotChecked=0, Total=4556 [2021-05-02 19:06:29,721 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand has 68 states, 68 states have (on average 1.9705882352941178) internal successors, (134), 67 states have internal predecessors, (134), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:06:31,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:06:31,433 INFO L93 Difference]: Finished difference Result 103 states and 108 transitions. [2021-05-02 19:06:31,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-02 19:06:31,433 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.9705882352941178) internal successors, (134), 67 states have internal predecessors, (134), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 81 [2021-05-02 19:06:31,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:06:31,434 INFO L225 Difference]: With dead ends: 103 [2021-05-02 19:06:31,434 INFO L226 Difference]: Without dead ends: 100 [2021-05-02 19:06:31,435 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4015 ImplicationChecksByTransitivity, 2291.6ms TimeCoverageRelationStatistics Valid=1688, Invalid=9024, Unknown=0, NotChecked=0, Total=10712 [2021-05-02 19:06:31,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-05-02 19:06:31,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 96. [2021-05-02 19:06:31,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 84 states have (on average 1.0714285714285714) internal successors, (90), 86 states have internal predecessors, (90), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:06:31,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 101 transitions. [2021-05-02 19:06:31,436 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 101 transitions. Word has length 81 [2021-05-02 19:06:31,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:06:31,436 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 101 transitions. [2021-05-02 19:06:31,436 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 68 states, 68 states have (on average 1.9705882352941178) internal successors, (134), 67 states have internal predecessors, (134), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:06:31,436 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 101 transitions. [2021-05-02 19:06:31,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-05-02 19:06:31,437 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:06:31,437 INFO L523 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:06:31,637 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:06:31,637 INFO L428 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:06:31,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:06:31,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1204809738, now seen corresponding path program 24 times [2021-05-02 19:06:31,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:06:31,638 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45098404] [2021-05-02 19:06:31,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:06:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:31,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:06:31,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:31,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:06:31,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:31,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-05-02 19:06:31,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:32,121 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 169 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:06:32,121 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:06:32,121 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45098404] [2021-05-02 19:06:32,121 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45098404] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:06:32,121 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761283963] [2021-05-02 19:06:32,123 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:06:32,172 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-05-02 19:06:32,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:06:32,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 34 conjunts are in the unsatisfiable core [2021-05-02 19:06:32,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:06:32,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:32,920 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 169 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:06:32,920 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761283963] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:06:32,920 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:06:32,920 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 35] total 68 [2021-05-02 19:06:32,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322098465] [2021-05-02 19:06:32,921 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states [2021-05-02 19:06:32,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:06:32,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-05-02 19:06:32,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=799, Invalid=3757, Unknown=0, NotChecked=0, Total=4556 [2021-05-02 19:06:32,922 INFO L87 Difference]: Start difference. First operand 96 states and 101 transitions. Second operand has 68 states, 68 states have (on average 2.0294117647058822) internal successors, (138), 67 states have internal predecessors, (138), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:06:34,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:06:34,195 INFO L93 Difference]: Finished difference Result 105 states and 110 transitions. [2021-05-02 19:06:34,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-02 19:06:34,196 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.0294117647058822) internal successors, (138), 67 states have internal predecessors, (138), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 83 [2021-05-02 19:06:34,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:06:34,196 INFO L225 Difference]: With dead ends: 105 [2021-05-02 19:06:34,196 INFO L226 Difference]: Without dead ends: 99 [2021-05-02 19:06:34,197 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4102 ImplicationChecksByTransitivity, 1987.3ms TimeCoverageRelationStatistics Valid=1644, Invalid=8456, Unknown=0, NotChecked=0, Total=10100 [2021-05-02 19:06:34,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-05-02 19:06:34,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 95. [2021-05-02 19:06:34,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 83 states have (on average 1.0602409638554218) internal successors, (88), 85 states have internal predecessors, (88), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:06:34,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2021-05-02 19:06:34,198 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 83 [2021-05-02 19:06:34,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:06:34,198 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2021-05-02 19:06:34,199 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 68 states, 68 states have (on average 2.0294117647058822) internal successors, (138), 67 states have internal predecessors, (138), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:06:34,199 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2021-05-02 19:06:34,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-05-02 19:06:34,199 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:06:34,199 INFO L523 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:06:34,412 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2021-05-02 19:06:34,413 INFO L428 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:06:34,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:06:34,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1754961025, now seen corresponding path program 24 times [2021-05-02 19:06:34,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:06:34,413 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943196246] [2021-05-02 19:06:34,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:06:34,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:34,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:06:34,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:34,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:06:34,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:34,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-05-02 19:06:34,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:34,995 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 169 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:06:34,995 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:06:34,995 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943196246] [2021-05-02 19:06:34,995 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943196246] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:06:34,995 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750910846] [2021-05-02 19:06:34,996 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:06:35,044 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-05-02 19:06:35,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:06:35,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 34 conjunts are in the unsatisfiable core [2021-05-02 19:06:35,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:06:35,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:35,781 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 169 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:06:35,781 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750910846] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:06:35,781 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:06:35,782 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 35] total 68 [2021-05-02 19:06:35,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583706193] [2021-05-02 19:06:35,782 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states [2021-05-02 19:06:35,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:06:35,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-05-02 19:06:35,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=799, Invalid=3757, Unknown=0, NotChecked=0, Total=4556 [2021-05-02 19:06:35,783 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand has 68 states, 68 states have (on average 2.0294117647058822) internal successors, (138), 67 states have internal predecessors, (138), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:06:37,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:06:37,025 INFO L93 Difference]: Finished difference Result 99 states and 102 transitions. [2021-05-02 19:06:37,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-02 19:06:37,026 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.0294117647058822) internal successors, (138), 67 states have internal predecessors, (138), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 83 [2021-05-02 19:06:37,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:06:37,026 INFO L225 Difference]: With dead ends: 99 [2021-05-02 19:06:37,026 INFO L226 Difference]: Without dead ends: 95 [2021-05-02 19:06:37,027 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3837 ImplicationChecksByTransitivity, 2094.1ms TimeCoverageRelationStatistics Valid=1644, Invalid=8456, Unknown=0, NotChecked=0, Total=10100 [2021-05-02 19:06:37,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-05-02 19:06:37,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2021-05-02 19:06:37,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 82 states have (on average 1.048780487804878) internal successors, (86), 84 states have internal predecessors, (86), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:06:37,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 97 transitions. [2021-05-02 19:06:37,029 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 97 transitions. Word has length 83 [2021-05-02 19:06:37,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:06:37,029 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 97 transitions. [2021-05-02 19:06:37,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 68 states, 68 states have (on average 2.0294117647058822) internal successors, (138), 67 states have internal predecessors, (138), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:06:37,029 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 97 transitions. [2021-05-02 19:06:37,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-05-02 19:06:37,029 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:06:37,029 INFO L523 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:06:37,244 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2021-05-02 19:06:37,244 INFO L428 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:06:37,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:06:37,245 INFO L82 PathProgramCache]: Analyzing trace with hash -846462171, now seen corresponding path program 25 times [2021-05-02 19:06:37,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:06:37,245 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187528293] [2021-05-02 19:06:37,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:06:37,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:37,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:06:37,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:37,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:06:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:37,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-05-02 19:06:37,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:37,737 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 196 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:06:37,737 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:06:37,737 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187528293] [2021-05-02 19:06:37,737 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187528293] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:06:37,737 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361264670] [2021-05-02 19:06:37,737 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:06:37,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:37,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 37 conjunts are in the unsatisfiable core [2021-05-02 19:06:37,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:06:37,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:37,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:37,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:37,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:37,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:37,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:37,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:37,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:37,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:37,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:37,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:37,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:37,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:37,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:38,644 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 196 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:06:38,644 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361264670] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:06:38,644 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:06:38,644 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38] total 72 [2021-05-02 19:06:38,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564712550] [2021-05-02 19:06:38,645 INFO L460 AbstractCegarLoop]: Interpolant automaton has 72 states [2021-05-02 19:06:38,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:06:38,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-05-02 19:06:38,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=897, Invalid=4215, Unknown=0, NotChecked=0, Total=5112 [2021-05-02 19:06:38,646 INFO L87 Difference]: Start difference. First operand 94 states and 97 transitions. Second operand has 72 states, 72 states have (on average 1.9722222222222223) internal successors, (142), 71 states have internal predecessors, (142), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:06:40,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:06:40,325 INFO L93 Difference]: Finished difference Result 112 states and 119 transitions. [2021-05-02 19:06:40,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-05-02 19:06:40,326 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 1.9722222222222223) internal successors, (142), 71 states have internal predecessors, (142), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 85 [2021-05-02 19:06:40,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:06:40,337 INFO L225 Difference]: With dead ends: 112 [2021-05-02 19:06:40,337 INFO L226 Difference]: Without dead ends: 107 [2021-05-02 19:06:40,338 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4733 ImplicationChecksByTransitivity, 2458.6ms TimeCoverageRelationStatistics Valid=1892, Invalid=10098, Unknown=0, NotChecked=0, Total=11990 [2021-05-02 19:06:40,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-05-02 19:06:40,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 97. [2021-05-02 19:06:40,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 85 states have (on average 1.0588235294117647) internal successors, (90), 87 states have internal predecessors, (90), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:06:40,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2021-05-02 19:06:40,342 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 85 [2021-05-02 19:06:40,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:06:40,342 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2021-05-02 19:06:40,342 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 72 states, 72 states have (on average 1.9722222222222223) internal successors, (142), 71 states have internal predecessors, (142), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:06:40,342 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2021-05-02 19:06:40,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-05-02 19:06:40,343 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:06:40,343 INFO L523 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:06:40,558 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2021-05-02 19:06:40,558 INFO L428 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:06:40,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:06:40,558 INFO L82 PathProgramCache]: Analyzing trace with hash -222355005, now seen corresponding path program 25 times [2021-05-02 19:06:40,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:06:40,558 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295372544] [2021-05-02 19:06:40,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:06:40,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:40,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:06:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:40,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:06:40,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:40,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-05-02 19:06:40,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:41,142 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 196 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:06:41,142 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:06:41,142 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295372544] [2021-05-02 19:06:41,142 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295372544] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:06:41,142 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409596024] [2021-05-02 19:06:41,142 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:06:41,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:41,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 37 conjunts are in the unsatisfiable core [2021-05-02 19:06:41,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:06:41,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:41,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:42,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:42,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:42,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:42,044 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 196 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:06:42,045 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409596024] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:06:42,045 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:06:42,045 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38] total 72 [2021-05-02 19:06:42,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660270041] [2021-05-02 19:06:42,045 INFO L460 AbstractCegarLoop]: Interpolant automaton has 72 states [2021-05-02 19:06:42,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:06:42,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-05-02 19:06:42,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=897, Invalid=4215, Unknown=0, NotChecked=0, Total=5112 [2021-05-02 19:06:42,046 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand has 72 states, 72 states have (on average 1.9722222222222223) internal successors, (142), 71 states have internal predecessors, (142), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:06:43,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:06:43,834 INFO L93 Difference]: Finished difference Result 107 states and 112 transitions. [2021-05-02 19:06:43,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-05-02 19:06:43,834 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 1.9722222222222223) internal successors, (142), 71 states have internal predecessors, (142), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 85 [2021-05-02 19:06:43,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:06:43,835 INFO L225 Difference]: With dead ends: 107 [2021-05-02 19:06:43,835 INFO L226 Difference]: Without dead ends: 104 [2021-05-02 19:06:43,835 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4539 ImplicationChecksByTransitivity, 2550.8ms TimeCoverageRelationStatistics Valid=1892, Invalid=10098, Unknown=0, NotChecked=0, Total=11990 [2021-05-02 19:06:43,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-05-02 19:06:43,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 100. [2021-05-02 19:06:43,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 88 states have (on average 1.0681818181818181) internal successors, (94), 90 states have internal predecessors, (94), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:06:43,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 105 transitions. [2021-05-02 19:06:43,837 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 105 transitions. Word has length 85 [2021-05-02 19:06:43,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:06:43,837 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 105 transitions. [2021-05-02 19:06:43,837 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 72 states, 72 states have (on average 1.9722222222222223) internal successors, (142), 71 states have internal predecessors, (142), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:06:43,837 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 105 transitions. [2021-05-02 19:06:43,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-05-02 19:06:43,838 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:06:43,838 INFO L523 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:06:44,038 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:06:44,038 INFO L428 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:06:44,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:06:44,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1175356375, now seen corresponding path program 26 times [2021-05-02 19:06:44,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:06:44,039 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280641998] [2021-05-02 19:06:44,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:06:44,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:44,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:06:44,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:44,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:06:44,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:44,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-05-02 19:06:44,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:44,527 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 196 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:06:44,527 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:06:44,527 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280641998] [2021-05-02 19:06:44,527 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280641998] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:06:44,527 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078086213] [2021-05-02 19:06:44,528 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:06:44,568 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 19:06:44,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:06:44,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 36 conjunts are in the unsatisfiable core [2021-05-02 19:06:44,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:06:44,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:44,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:44,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:44,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:44,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:44,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:44,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:44,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:44,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:44,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:44,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:44,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:44,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:44,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:44,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:44,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:44,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:44,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:44,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:44,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:44,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:44,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:44,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:44,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:44,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:44,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:44,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:44,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:45,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:45,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:45,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:45,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:45,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:45,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:45,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:45,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:45,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:45,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:45,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:45,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:45,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:45,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:45,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:45,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:45,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:45,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:45,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:45,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:45,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:45,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:45,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:45,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:45,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:45,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:45,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:45,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:45,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:45,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:45,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:45,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:45,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:45,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:45,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:45,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:45,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:45,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:45,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:45,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:45,383 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 196 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:06:45,383 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078086213] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:06:45,383 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:06:45,383 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 37] total 72 [2021-05-02 19:06:45,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654784707] [2021-05-02 19:06:45,383 INFO L460 AbstractCegarLoop]: Interpolant automaton has 72 states [2021-05-02 19:06:45,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:06:45,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-05-02 19:06:45,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=899, Invalid=4213, Unknown=0, NotChecked=0, Total=5112 [2021-05-02 19:06:45,384 INFO L87 Difference]: Start difference. First operand 100 states and 105 transitions. Second operand has 72 states, 72 states have (on average 2.0277777777777777) internal successors, (146), 71 states have internal predecessors, (146), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:06:47,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:06:47,061 INFO L93 Difference]: Finished difference Result 109 states and 114 transitions. [2021-05-02 19:06:47,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-02 19:06:47,061 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.0277777777777777) internal successors, (146), 71 states have internal predecessors, (146), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 87 [2021-05-02 19:06:47,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:06:47,062 INFO L225 Difference]: With dead ends: 109 [2021-05-02 19:06:47,062 INFO L226 Difference]: Without dead ends: 103 [2021-05-02 19:06:47,063 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4648 ImplicationChecksByTransitivity, 2156.8ms TimeCoverageRelationStatistics Valid=1847, Invalid=9495, Unknown=0, NotChecked=0, Total=11342 [2021-05-02 19:06:47,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-05-02 19:06:47,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2021-05-02 19:06:47,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 87 states have (on average 1.0574712643678161) internal successors, (92), 89 states have internal predecessors, (92), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:06:47,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2021-05-02 19:06:47,064 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 87 [2021-05-02 19:06:47,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:06:47,064 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2021-05-02 19:06:47,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 72 states, 72 states have (on average 2.0277777777777777) internal successors, (146), 71 states have internal predecessors, (146), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:06:47,064 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2021-05-02 19:06:47,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-05-02 19:06:47,065 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:06:47,065 INFO L523 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:06:47,280 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2021-05-02 19:06:47,280 INFO L428 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:06:47,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:06:47,281 INFO L82 PathProgramCache]: Analyzing trace with hash 2037754526, now seen corresponding path program 26 times [2021-05-02 19:06:47,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:06:47,281 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067233483] [2021-05-02 19:06:47,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:06:47,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:47,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:06:47,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:47,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:06:47,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:47,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-05-02 19:06:47,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:47,870 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 196 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:06:47,870 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:06:47,870 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067233483] [2021-05-02 19:06:47,870 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067233483] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:06:47,871 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992217373] [2021-05-02 19:06:47,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:06:47,910 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 19:06:47,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:06:47,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 36 conjunts are in the unsatisfiable core [2021-05-02 19:06:47,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:06:47,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:47,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:47,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:47,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:47,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:47,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:47,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:47,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:48,726 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 196 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:06:48,727 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992217373] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:06:48,727 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:06:48,727 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 37] total 72 [2021-05-02 19:06:48,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718891021] [2021-05-02 19:06:48,727 INFO L460 AbstractCegarLoop]: Interpolant automaton has 72 states [2021-05-02 19:06:48,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:06:48,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-05-02 19:06:48,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=899, Invalid=4213, Unknown=0, NotChecked=0, Total=5112 [2021-05-02 19:06:48,728 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand has 72 states, 72 states have (on average 2.0277777777777777) internal successors, (146), 71 states have internal predecessors, (146), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:06:50,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:06:50,150 INFO L93 Difference]: Finished difference Result 103 states and 106 transitions. [2021-05-02 19:06:50,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-02 19:06:50,150 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.0277777777777777) internal successors, (146), 71 states have internal predecessors, (146), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 87 [2021-05-02 19:06:50,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:06:50,151 INFO L225 Difference]: With dead ends: 103 [2021-05-02 19:06:50,151 INFO L226 Difference]: Without dead ends: 99 [2021-05-02 19:06:50,152 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4349 ImplicationChecksByTransitivity, 2260.7ms TimeCoverageRelationStatistics Valid=1847, Invalid=9495, Unknown=0, NotChecked=0, Total=11342 [2021-05-02 19:06:50,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-05-02 19:06:50,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2021-05-02 19:06:50,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 86 states have (on average 1.0465116279069768) internal successors, (90), 88 states have internal predecessors, (90), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:06:50,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 101 transitions. [2021-05-02 19:06:50,153 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 101 transitions. Word has length 87 [2021-05-02 19:06:50,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:06:50,153 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 101 transitions. [2021-05-02 19:06:50,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 72 states, 72 states have (on average 2.0277777777777777) internal successors, (146), 71 states have internal predecessors, (146), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:06:50,153 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 101 transitions. [2021-05-02 19:06:50,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-05-02 19:06:50,154 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:06:50,154 INFO L523 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:06:50,354 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,55 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:06:50,354 INFO L428 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:06:50,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:06:50,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1820915332, now seen corresponding path program 27 times [2021-05-02 19:06:50,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:06:50,355 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753333673] [2021-05-02 19:06:50,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:06:50,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:50,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:06:50,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:50,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:06:50,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:50,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-05-02 19:06:50,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:50,903 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 225 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:06:50,903 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:06:50,903 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753333673] [2021-05-02 19:06:50,903 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753333673] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:06:50,903 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411280467] [2021-05-02 19:06:50,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:06:50,964 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-05-02 19:06:50,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:06:50,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 39 conjunts are in the unsatisfiable core [2021-05-02 19:06:50,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:06:51,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:51,899 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 225 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:06:51,899 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411280467] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:06:51,900 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:06:51,900 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40] total 76 [2021-05-02 19:06:51,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220593796] [2021-05-02 19:06:51,900 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2021-05-02 19:06:51,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:06:51,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-05-02 19:06:51,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1003, Invalid=4697, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 19:06:51,901 INFO L87 Difference]: Start difference. First operand 98 states and 101 transitions. Second operand has 76 states, 76 states have (on average 1.9736842105263157) internal successors, (150), 75 states have internal predecessors, (150), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:06:53,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:06:53,843 INFO L93 Difference]: Finished difference Result 116 states and 123 transitions. [2021-05-02 19:06:53,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-02 19:06:53,844 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 1.9736842105263157) internal successors, (150), 75 states have internal predecessors, (150), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 89 [2021-05-02 19:06:53,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:06:53,844 INFO L225 Difference]: With dead ends: 116 [2021-05-02 19:06:53,845 INFO L226 Difference]: Without dead ends: 111 [2021-05-02 19:06:53,845 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5318 ImplicationChecksByTransitivity, 2643.6ms TimeCoverageRelationStatistics Valid=2108, Invalid=11232, Unknown=0, NotChecked=0, Total=13340 [2021-05-02 19:06:53,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-05-02 19:06:53,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 101. [2021-05-02 19:06:53,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 89 states have (on average 1.0561797752808988) internal successors, (94), 91 states have internal predecessors, (94), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:06:53,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2021-05-02 19:06:53,847 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 89 [2021-05-02 19:06:53,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:06:53,847 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2021-05-02 19:06:53,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 76 states, 76 states have (on average 1.9736842105263157) internal successors, (150), 75 states have internal predecessors, (150), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:06:53,847 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2021-05-02 19:06:53,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-05-02 19:06:53,847 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:06:53,848 INFO L523 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:06:54,048 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:06:54,048 INFO L428 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:06:54,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:06:54,048 INFO L82 PathProgramCache]: Analyzing trace with hash 302983522, now seen corresponding path program 27 times [2021-05-02 19:06:54,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:06:54,048 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850737787] [2021-05-02 19:06:54,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:06:54,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:54,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:06:54,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:54,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:06:54,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:54,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-05-02 19:06:54,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:54,704 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 225 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:06:54,704 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:06:54,704 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850737787] [2021-05-02 19:06:54,704 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850737787] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:06:54,704 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417934391] [2021-05-02 19:06:54,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:06:54,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-05-02 19:06:54,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:06:54,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 39 conjunts are in the unsatisfiable core [2021-05-02 19:06:54,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:06:54,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:54,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:54,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:54,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:54,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:54,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:54,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:54,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:54,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:54,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:54,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:54,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:54,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:54,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:54,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:54,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:54,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:54,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:54,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:54,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:54,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:54,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:55,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:55,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:55,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:55,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:55,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:55,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:55,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:55,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:55,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:55,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:55,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:55,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:55,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:55,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:55,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:55,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:55,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:55,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:55,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:55,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:55,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:55,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:55,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:55,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:55,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:55,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:55,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:55,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:55,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:55,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:55,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:55,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:55,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:55,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:55,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:55,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:55,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:55,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:55,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:55,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:55,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:55,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:55,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:55,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:55,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:55,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:55,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:55,708 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 225 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:06:55,708 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417934391] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:06:55,708 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:06:55,708 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40] total 76 [2021-05-02 19:06:55,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533635818] [2021-05-02 19:06:55,708 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2021-05-02 19:06:55,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:06:55,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-05-02 19:06:55,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1003, Invalid=4697, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 19:06:55,709 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand has 76 states, 76 states have (on average 1.9736842105263157) internal successors, (150), 75 states have internal predecessors, (150), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:06:57,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:06:57,412 INFO L93 Difference]: Finished difference Result 111 states and 116 transitions. [2021-05-02 19:06:57,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-02 19:06:57,412 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 1.9736842105263157) internal successors, (150), 75 states have internal predecessors, (150), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 89 [2021-05-02 19:06:57,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:06:57,413 INFO L225 Difference]: With dead ends: 111 [2021-05-02 19:06:57,413 INFO L226 Difference]: Without dead ends: 108 [2021-05-02 19:06:57,413 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5095 ImplicationChecksByTransitivity, 2740.9ms TimeCoverageRelationStatistics Valid=2108, Invalid=11232, Unknown=0, NotChecked=0, Total=13340 [2021-05-02 19:06:57,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-05-02 19:06:57,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 104. [2021-05-02 19:06:57,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 92 states have (on average 1.065217391304348) internal successors, (98), 94 states have internal predecessors, (98), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:06:57,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 109 transitions. [2021-05-02 19:06:57,415 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 109 transitions. Word has length 89 [2021-05-02 19:06:57,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:06:57,415 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 109 transitions. [2021-05-02 19:06:57,415 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 76 states, 76 states have (on average 1.9736842105263157) internal successors, (150), 75 states have internal predecessors, (150), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:06:57,415 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 109 transitions. [2021-05-02 19:06:57,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-05-02 19:06:57,416 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:06:57,416 INFO L523 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:06:57,628 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2021-05-02 19:06:57,629 INFO L428 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:06:57,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:06:57,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1163794440, now seen corresponding path program 28 times [2021-05-02 19:06:57,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:06:57,629 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647346056] [2021-05-02 19:06:57,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:06:57,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:57,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:06:57,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:57,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:06:57,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:57,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-05-02 19:06:57,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:06:58,195 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 225 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:06:58,195 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:06:58,195 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647346056] [2021-05-02 19:06:58,195 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647346056] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:06:58,195 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783362675] [2021-05-02 19:06:58,195 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:06:58,234 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 19:06:58,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:06:58,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 38 conjunts are in the unsatisfiable core [2021-05-02 19:06:58,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:06:58,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:58,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:59,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:59,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:59,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:59,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:59,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:59,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:59,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:59,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:59,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:59,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:59,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:59,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:06:59,140 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 225 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:06:59,140 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783362675] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:06:59,140 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:06:59,140 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 39] total 76 [2021-05-02 19:06:59,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800774704] [2021-05-02 19:06:59,140 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2021-05-02 19:06:59,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:06:59,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-05-02 19:06:59,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1005, Invalid=4695, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 19:06:59,141 INFO L87 Difference]: Start difference. First operand 104 states and 109 transitions. Second operand has 76 states, 76 states have (on average 2.026315789473684) internal successors, (154), 75 states have internal predecessors, (154), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:07:00,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:07:00,957 INFO L93 Difference]: Finished difference Result 113 states and 118 transitions. [2021-05-02 19:07:00,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-02 19:07:00,957 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 2.026315789473684) internal successors, (154), 75 states have internal predecessors, (154), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 91 [2021-05-02 19:07:00,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:07:00,958 INFO L225 Difference]: With dead ends: 113 [2021-05-02 19:07:00,958 INFO L226 Difference]: Without dead ends: 107 [2021-05-02 19:07:00,959 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5228 ImplicationChecksByTransitivity, 2421.0ms TimeCoverageRelationStatistics Valid=2062, Invalid=10594, Unknown=0, NotChecked=0, Total=12656 [2021-05-02 19:07:00,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-05-02 19:07:00,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 103. [2021-05-02 19:07:00,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 91 states have (on average 1.054945054945055) internal successors, (96), 93 states have internal predecessors, (96), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:07:00,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2021-05-02 19:07:00,960 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 91 [2021-05-02 19:07:00,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:07:00,960 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2021-05-02 19:07:00,961 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 76 states, 76 states have (on average 2.026315789473684) internal successors, (154), 75 states have internal predecessors, (154), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:07:00,961 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2021-05-02 19:07:00,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-05-02 19:07:00,961 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:07:00,961 INFO L523 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:07:01,175 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2021-05-02 19:07:01,176 INFO L428 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:07:01,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:07:01,176 INFO L82 PathProgramCache]: Analyzing trace with hash 871381373, now seen corresponding path program 28 times [2021-05-02 19:07:01,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:07:01,176 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579116043] [2021-05-02 19:07:01,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:07:01,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:01,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:07:01,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:01,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:07:01,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:01,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-05-02 19:07:01,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:01,840 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 225 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:07:01,840 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:07:01,840 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579116043] [2021-05-02 19:07:01,841 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579116043] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:07:01,841 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222770557] [2021-05-02 19:07:01,841 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:07:01,881 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 19:07:01,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:07:01,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 38 conjunts are in the unsatisfiable core [2021-05-02 19:07:01,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:07:01,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:01,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:01,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:01,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:01,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:01,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:01,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:01,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:01,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:01,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:02,778 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 225 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:07:02,778 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222770557] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:07:02,778 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:07:02,778 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 39] total 76 [2021-05-02 19:07:02,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120219555] [2021-05-02 19:07:02,779 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2021-05-02 19:07:02,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:07:02,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-05-02 19:07:02,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1005, Invalid=4695, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 19:07:02,779 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand has 76 states, 76 states have (on average 2.026315789473684) internal successors, (154), 75 states have internal predecessors, (154), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:07:04,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:07:04,528 INFO L93 Difference]: Finished difference Result 107 states and 110 transitions. [2021-05-02 19:07:04,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-02 19:07:04,528 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 2.026315789473684) internal successors, (154), 75 states have internal predecessors, (154), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 91 [2021-05-02 19:07:04,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:07:04,529 INFO L225 Difference]: With dead ends: 107 [2021-05-02 19:07:04,529 INFO L226 Difference]: Without dead ends: 103 [2021-05-02 19:07:04,530 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4893 ImplicationChecksByTransitivity, 2502.9ms TimeCoverageRelationStatistics Valid=2062, Invalid=10594, Unknown=0, NotChecked=0, Total=12656 [2021-05-02 19:07:04,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-05-02 19:07:04,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2021-05-02 19:07:04,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 90 states have (on average 1.0444444444444445) internal successors, (94), 92 states have internal predecessors, (94), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:07:04,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 105 transitions. [2021-05-02 19:07:04,531 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 105 transitions. Word has length 91 [2021-05-02 19:07:04,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:07:04,531 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 105 transitions. [2021-05-02 19:07:04,531 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 76 states, 76 states have (on average 2.026315789473684) internal successors, (154), 75 states have internal predecessors, (154), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:07:04,531 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 105 transitions. [2021-05-02 19:07:04,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-05-02 19:07:04,532 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:07:04,532 INFO L523 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:07:04,744 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2021-05-02 19:07:04,745 INFO L428 AbstractCegarLoop]: === Iteration 64 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:07:04,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:07:04,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1922779555, now seen corresponding path program 29 times [2021-05-02 19:07:04,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:07:04,745 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054470315] [2021-05-02 19:07:04,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:07:04,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:04,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:07:04,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:04,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:07:04,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:05,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-05-02 19:07:05,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:05,354 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 256 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:07:05,354 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:07:05,354 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054470315] [2021-05-02 19:07:05,354 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054470315] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:07:05,354 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563706815] [2021-05-02 19:07:05,354 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:07:05,398 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2021-05-02 19:07:05,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:07:05,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 41 conjunts are in the unsatisfiable core [2021-05-02 19:07:05,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:07:05,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:05,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:05,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:05,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:05,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:05,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:05,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:05,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:05,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:05,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:05,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:05,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:05,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:05,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:05,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:05,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:05,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:05,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:05,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:05,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:05,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:05,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:05,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:05,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:05,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:05,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:05,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:05,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:05,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:05,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:05,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:05,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:06,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:06,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:06,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:06,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:06,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:06,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:06,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:06,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:06,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:06,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:06,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:06,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:06,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:06,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:06,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:06,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:06,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:06,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:06,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:06,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:06,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:06,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:06,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:06,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:06,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:06,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:06,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:06,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:06,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:06,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:06,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:06,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:06,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:06,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:06,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:06,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:06,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:06,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:06,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:06,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:06,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:06,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:06,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:06,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:06,437 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 256 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:07:06,437 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563706815] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:07:06,437 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:07:06,437 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 42] total 80 [2021-05-02 19:07:06,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597080655] [2021-05-02 19:07:06,438 INFO L460 AbstractCegarLoop]: Interpolant automaton has 80 states [2021-05-02 19:07:06,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:07:06,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-05-02 19:07:06,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1115, Invalid=5205, Unknown=0, NotChecked=0, Total=6320 [2021-05-02 19:07:06,438 INFO L87 Difference]: Start difference. First operand 102 states and 105 transitions. Second operand has 80 states, 80 states have (on average 1.975) internal successors, (158), 79 states have internal predecessors, (158), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:07:08,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:07:08,675 INFO L93 Difference]: Finished difference Result 120 states and 127 transitions. [2021-05-02 19:07:08,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-02 19:07:08,676 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 1.975) internal successors, (158), 79 states have internal predecessors, (158), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 93 [2021-05-02 19:07:08,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:07:08,676 INFO L225 Difference]: With dead ends: 120 [2021-05-02 19:07:08,677 INFO L226 Difference]: Without dead ends: 115 [2021-05-02 19:07:08,677 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 58 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5937 ImplicationChecksByTransitivity, 2896.5ms TimeCoverageRelationStatistics Valid=2336, Invalid=12426, Unknown=0, NotChecked=0, Total=14762 [2021-05-02 19:07:08,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-05-02 19:07:08,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 105. [2021-05-02 19:07:08,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 93 states have (on average 1.053763440860215) internal successors, (98), 95 states have internal predecessors, (98), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:07:08,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2021-05-02 19:07:08,679 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 93 [2021-05-02 19:07:08,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:07:08,679 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2021-05-02 19:07:08,679 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 80 states, 80 states have (on average 1.975) internal successors, (158), 79 states have internal predecessors, (158), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:07:08,679 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2021-05-02 19:07:08,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-05-02 19:07:08,679 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:07:08,679 INFO L523 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:07:08,892 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:07:08,893 INFO L428 AbstractCegarLoop]: === Iteration 65 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:07:08,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:07:08,893 INFO L82 PathProgramCache]: Analyzing trace with hash -805273407, now seen corresponding path program 29 times [2021-05-02 19:07:08,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:07:08,893 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34176957] [2021-05-02 19:07:08,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:07:08,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:08,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:07:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:08,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:07:08,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:09,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-05-02 19:07:09,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:09,636 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 256 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:07:09,636 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:07:09,636 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34176957] [2021-05-02 19:07:09,636 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34176957] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:07:09,636 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809277128] [2021-05-02 19:07:09,636 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:07:09,679 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2021-05-02 19:07:09,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:07:09,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 41 conjunts are in the unsatisfiable core [2021-05-02 19:07:09,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:07:09,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:09,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:09,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:09,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:09,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:09,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:09,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:09,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:09,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:09,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:09,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:09,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:09,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:09,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:09,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:09,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:09,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:09,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:09,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:09,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:09,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:09,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:09,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:09,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:09,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:09,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:09,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:09,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:10,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:10,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:10,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:10,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:10,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:10,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:10,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:10,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:10,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:10,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:10,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:10,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:10,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:10,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:10,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:10,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:10,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:10,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:10,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:10,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:10,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:10,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:10,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:10,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:10,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:10,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:10,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:10,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:10,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:10,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:10,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:10,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:10,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:10,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:10,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:10,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:10,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:10,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:10,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:10,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:10,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:10,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:10,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:10,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:10,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:10,718 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 256 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:07:10,718 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809277128] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:07:10,718 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:07:10,718 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 42] total 80 [2021-05-02 19:07:10,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477524965] [2021-05-02 19:07:10,719 INFO L460 AbstractCegarLoop]: Interpolant automaton has 80 states [2021-05-02 19:07:10,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:07:10,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-05-02 19:07:10,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1115, Invalid=5205, Unknown=0, NotChecked=0, Total=6320 [2021-05-02 19:07:10,721 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand has 80 states, 80 states have (on average 1.975) internal successors, (158), 79 states have internal predecessors, (158), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:07:12,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:07:12,879 INFO L93 Difference]: Finished difference Result 115 states and 120 transitions. [2021-05-02 19:07:12,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-02 19:07:12,880 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 1.975) internal successors, (158), 79 states have internal predecessors, (158), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 93 [2021-05-02 19:07:12,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:07:12,880 INFO L225 Difference]: With dead ends: 115 [2021-05-02 19:07:12,880 INFO L226 Difference]: Without dead ends: 112 [2021-05-02 19:07:12,881 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 58 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5683 ImplicationChecksByTransitivity, 3020.2ms TimeCoverageRelationStatistics Valid=2336, Invalid=12426, Unknown=0, NotChecked=0, Total=14762 [2021-05-02 19:07:12,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-05-02 19:07:12,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 108. [2021-05-02 19:07:12,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 96 states have (on average 1.0625) internal successors, (102), 98 states have internal predecessors, (102), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:07:12,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 113 transitions. [2021-05-02 19:07:12,883 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 113 transitions. Word has length 93 [2021-05-02 19:07:12,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:07:12,883 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 113 transitions. [2021-05-02 19:07:12,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 80 states, 80 states have (on average 1.975) internal successors, (158), 79 states have internal predecessors, (158), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:07:12,883 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 113 transitions. [2021-05-02 19:07:12,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-05-02 19:07:12,883 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:07:12,883 INFO L523 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:07:13,084 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,61 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:07:13,084 INFO L428 AbstractCegarLoop]: === Iteration 66 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:07:13,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:07:13,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1280775079, now seen corresponding path program 30 times [2021-05-02 19:07:13,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:07:13,084 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979899998] [2021-05-02 19:07:13,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:07:13,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:13,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:07:13,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:13,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:07:13,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:13,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-05-02 19:07:13,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:13,679 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 256 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:07:13,679 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:07:13,679 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979899998] [2021-05-02 19:07:13,679 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979899998] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:07:13,679 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304157648] [2021-05-02 19:07:13,679 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:07:13,734 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2021-05-02 19:07:13,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:07:13,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 40 conjunts are in the unsatisfiable core [2021-05-02 19:07:13,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:07:13,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:13,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:13,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:13,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:13,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:13,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:13,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:13,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:13,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:13,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:13,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:13,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:13,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:13,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:13,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:13,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:14,760 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 256 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:07:14,761 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304157648] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:07:14,761 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:07:14,761 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 41] total 80 [2021-05-02 19:07:14,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879630060] [2021-05-02 19:07:14,761 INFO L460 AbstractCegarLoop]: Interpolant automaton has 80 states [2021-05-02 19:07:14,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:07:14,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-05-02 19:07:14,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1117, Invalid=5203, Unknown=0, NotChecked=0, Total=6320 [2021-05-02 19:07:14,762 INFO L87 Difference]: Start difference. First operand 108 states and 113 transitions. Second operand has 80 states, 80 states have (on average 2.025) internal successors, (162), 79 states have internal predecessors, (162), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:07:16,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:07:16,884 INFO L93 Difference]: Finished difference Result 117 states and 122 transitions. [2021-05-02 19:07:16,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-02 19:07:16,885 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 2.025) internal successors, (162), 79 states have internal predecessors, (162), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 95 [2021-05-02 19:07:16,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:07:16,886 INFO L225 Difference]: With dead ends: 117 [2021-05-02 19:07:16,886 INFO L226 Difference]: Without dead ends: 111 [2021-05-02 19:07:16,886 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5842 ImplicationChecksByTransitivity, 2613.5ms TimeCoverageRelationStatistics Valid=2289, Invalid=11753, Unknown=0, NotChecked=0, Total=14042 [2021-05-02 19:07:16,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-05-02 19:07:16,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 107. [2021-05-02 19:07:16,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 95 states have (on average 1.0526315789473684) internal successors, (100), 97 states have internal predecessors, (100), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:07:16,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2021-05-02 19:07:16,888 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 95 [2021-05-02 19:07:16,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:07:16,888 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2021-05-02 19:07:16,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 80 states, 80 states have (on average 2.025) internal successors, (162), 79 states have internal predecessors, (162), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:07:16,888 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2021-05-02 19:07:16,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-05-02 19:07:16,889 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:07:16,889 INFO L523 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:07:17,104 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:07:17,104 INFO L428 AbstractCegarLoop]: === Iteration 67 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:07:17,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:07:17,105 INFO L82 PathProgramCache]: Analyzing trace with hash -565811172, now seen corresponding path program 30 times [2021-05-02 19:07:17,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:07:17,105 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032641819] [2021-05-02 19:07:17,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:07:17,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:17,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:07:17,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:17,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:07:17,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:17,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-05-02 19:07:17,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:17,849 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 256 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:07:17,849 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:07:17,850 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032641819] [2021-05-02 19:07:17,850 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032641819] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:07:17,850 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728303230] [2021-05-02 19:07:17,850 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:07:17,903 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2021-05-02 19:07:17,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:07:17,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 40 conjunts are in the unsatisfiable core [2021-05-02 19:07:17,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:07:17,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:17,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:17,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:17,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:17,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:17,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:17,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:17,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:18,910 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 256 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:07:18,911 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728303230] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:07:18,911 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:07:18,911 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 41] total 80 [2021-05-02 19:07:18,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138982753] [2021-05-02 19:07:18,911 INFO L460 AbstractCegarLoop]: Interpolant automaton has 80 states [2021-05-02 19:07:18,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:07:18,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-05-02 19:07:18,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1117, Invalid=5203, Unknown=0, NotChecked=0, Total=6320 [2021-05-02 19:07:18,912 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand has 80 states, 80 states have (on average 2.025) internal successors, (162), 79 states have internal predecessors, (162), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:07:20,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:07:20,959 INFO L93 Difference]: Finished difference Result 111 states and 114 transitions. [2021-05-02 19:07:20,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-02 19:07:20,960 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 2.025) internal successors, (162), 79 states have internal predecessors, (162), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 95 [2021-05-02 19:07:20,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:07:20,960 INFO L225 Difference]: With dead ends: 111 [2021-05-02 19:07:20,960 INFO L226 Difference]: Without dead ends: 107 [2021-05-02 19:07:20,961 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5469 ImplicationChecksByTransitivity, 2784.6ms TimeCoverageRelationStatistics Valid=2289, Invalid=11753, Unknown=0, NotChecked=0, Total=14042 [2021-05-02 19:07:20,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-05-02 19:07:20,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 106. [2021-05-02 19:07:20,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 94 states have (on average 1.0425531914893618) internal successors, (98), 96 states have internal predecessors, (98), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:07:20,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 109 transitions. [2021-05-02 19:07:20,963 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 109 transitions. Word has length 95 [2021-05-02 19:07:20,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:07:20,963 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 109 transitions. [2021-05-02 19:07:20,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 80 states, 80 states have (on average 2.025) internal successors, (162), 79 states have internal predecessors, (162), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:07:20,963 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 109 transitions. [2021-05-02 19:07:20,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-05-02 19:07:20,963 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:07:20,963 INFO L523 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:07:21,176 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2021-05-02 19:07:21,177 INFO L428 AbstractCegarLoop]: === Iteration 68 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:07:21,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:07:21,177 INFO L82 PathProgramCache]: Analyzing trace with hash -534754174, now seen corresponding path program 31 times [2021-05-02 19:07:21,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:07:21,177 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533998305] [2021-05-02 19:07:21,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:07:21,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:21,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:07:21,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:21,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:07:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:21,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-05-02 19:07:21,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:21,843 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 289 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:07:21,843 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:07:21,843 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533998305] [2021-05-02 19:07:21,843 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533998305] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:07:21,843 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815437872] [2021-05-02 19:07:21,843 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:07:21,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:21,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 43 conjunts are in the unsatisfiable core [2021-05-02 19:07:21,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:07:21,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:21,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:21,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:21,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:22,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:23,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:23,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:23,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:23,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:23,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:23,045 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 289 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:07:23,045 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815437872] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:07:23,045 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:07:23,045 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44] total 84 [2021-05-02 19:07:23,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739930600] [2021-05-02 19:07:23,046 INFO L460 AbstractCegarLoop]: Interpolant automaton has 84 states [2021-05-02 19:07:23,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:07:23,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-05-02 19:07:23,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1233, Invalid=5739, Unknown=0, NotChecked=0, Total=6972 [2021-05-02 19:07:23,046 INFO L87 Difference]: Start difference. First operand 106 states and 109 transitions. Second operand has 84 states, 84 states have (on average 1.9761904761904763) internal successors, (166), 83 states have internal predecessors, (166), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:07:25,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:07:25,043 INFO L93 Difference]: Finished difference Result 124 states and 131 transitions. [2021-05-02 19:07:25,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-02 19:07:25,045 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 1.9761904761904763) internal successors, (166), 83 states have internal predecessors, (166), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 97 [2021-05-02 19:07:25,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:07:25,045 INFO L225 Difference]: With dead ends: 124 [2021-05-02 19:07:25,045 INFO L226 Difference]: Without dead ends: 119 [2021-05-02 19:07:25,046 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6590 ImplicationChecksByTransitivity, 3164.4ms TimeCoverageRelationStatistics Valid=2576, Invalid=13680, Unknown=0, NotChecked=0, Total=16256 [2021-05-02 19:07:25,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-05-02 19:07:25,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 109. [2021-05-02 19:07:25,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 97 states have (on average 1.0515463917525774) internal successors, (102), 99 states have internal predecessors, (102), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:07:25,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2021-05-02 19:07:25,048 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 97 [2021-05-02 19:07:25,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:07:25,048 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2021-05-02 19:07:25,048 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 84 states, 84 states have (on average 1.9761904761904763) internal successors, (166), 83 states have internal predecessors, (166), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:07:25,048 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2021-05-02 19:07:25,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-05-02 19:07:25,048 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:07:25,049 INFO L523 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:07:25,259 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:07:25,260 INFO L428 AbstractCegarLoop]: === Iteration 69 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:07:25,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:07:25,260 INFO L82 PathProgramCache]: Analyzing trace with hash 2041870304, now seen corresponding path program 31 times [2021-05-02 19:07:25,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:07:25,260 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661676685] [2021-05-02 19:07:25,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:07:25,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:25,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:07:25,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:25,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:07:25,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:25,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-05-02 19:07:25,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:26,071 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 289 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:07:26,072 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:07:26,072 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661676685] [2021-05-02 19:07:26,072 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661676685] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:07:26,072 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684249045] [2021-05-02 19:07:26,072 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:07:26,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:26,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 43 conjunts are in the unsatisfiable core [2021-05-02 19:07:26,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:07:26,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:26,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:27,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:27,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:27,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:27,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:27,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:27,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:27,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:27,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:27,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:27,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:27,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:27,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:27,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:27,280 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 289 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:07:27,280 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684249045] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:07:27,280 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:07:27,280 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44] total 84 [2021-05-02 19:07:27,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729991824] [2021-05-02 19:07:27,280 INFO L460 AbstractCegarLoop]: Interpolant automaton has 84 states [2021-05-02 19:07:27,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:07:27,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-05-02 19:07:27,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1233, Invalid=5739, Unknown=0, NotChecked=0, Total=6972 [2021-05-02 19:07:27,281 INFO L87 Difference]: Start difference. First operand 109 states and 113 transitions. Second operand has 84 states, 84 states have (on average 1.9761904761904763) internal successors, (166), 83 states have internal predecessors, (166), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:07:29,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:07:29,417 INFO L93 Difference]: Finished difference Result 119 states and 124 transitions. [2021-05-02 19:07:29,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-02 19:07:29,417 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 1.9761904761904763) internal successors, (166), 83 states have internal predecessors, (166), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 97 [2021-05-02 19:07:29,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:07:29,418 INFO L225 Difference]: With dead ends: 119 [2021-05-02 19:07:29,418 INFO L226 Difference]: Without dead ends: 116 [2021-05-02 19:07:29,419 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6303 ImplicationChecksByTransitivity, 3331.5ms TimeCoverageRelationStatistics Valid=2576, Invalid=13680, Unknown=0, NotChecked=0, Total=16256 [2021-05-02 19:07:29,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-05-02 19:07:29,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 112. [2021-05-02 19:07:29,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 100 states have (on average 1.06) internal successors, (106), 102 states have internal predecessors, (106), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:07:29,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 117 transitions. [2021-05-02 19:07:29,420 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 117 transitions. Word has length 97 [2021-05-02 19:07:29,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:07:29,420 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 117 transitions. [2021-05-02 19:07:29,420 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 84 states, 84 states have (on average 1.9761904761904763) internal successors, (166), 83 states have internal predecessors, (166), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:07:29,420 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 117 transitions. [2021-05-02 19:07:29,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-05-02 19:07:29,421 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:07:29,421 INFO L523 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:07:29,635 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2021-05-02 19:07:29,635 INFO L428 AbstractCegarLoop]: === Iteration 70 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:07:29,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:07:29,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1491713798, now seen corresponding path program 32 times [2021-05-02 19:07:29,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:07:29,636 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095979936] [2021-05-02 19:07:29,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:07:29,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:29,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:07:29,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:29,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:07:29,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:29,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-05-02 19:07:29,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:30,285 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 289 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:07:30,285 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:07:30,285 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095979936] [2021-05-02 19:07:30,285 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095979936] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:07:30,285 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587318320] [2021-05-02 19:07:30,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:07:30,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 19:07:30,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:07:30,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 42 conjunts are in the unsatisfiable core [2021-05-02 19:07:30,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:07:30,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:30,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:30,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:30,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:30,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:30,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:30,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:30,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:30,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:30,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:30,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:30,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:30,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:30,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:30,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:30,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:30,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:30,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:30,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:30,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:30,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:30,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:30,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:30,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:30,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:30,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:30,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:30,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:30,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:30,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:30,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:30,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:30,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:30,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:30,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:30,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:30,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:30,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:30,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:30,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:30,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:30,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:31,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:31,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:31,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:31,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:31,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:31,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:31,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:31,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:31,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:31,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:31,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:31,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:31,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:31,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:31,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:31,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:31,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:31,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:31,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:31,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:31,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:31,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:31,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:31,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:31,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:31,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:31,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:31,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:31,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:31,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:31,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:31,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:31,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:31,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:31,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:31,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:31,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:31,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:31,441 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 289 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:07:31,441 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587318320] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:07:31,442 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:07:31,442 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 43] total 84 [2021-05-02 19:07:31,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662222595] [2021-05-02 19:07:31,442 INFO L460 AbstractCegarLoop]: Interpolant automaton has 84 states [2021-05-02 19:07:31,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:07:31,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-05-02 19:07:31,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1235, Invalid=5737, Unknown=0, NotChecked=0, Total=6972 [2021-05-02 19:07:31,443 INFO L87 Difference]: Start difference. First operand 112 states and 117 transitions. Second operand has 84 states, 84 states have (on average 2.0238095238095237) internal successors, (170), 83 states have internal predecessors, (170), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:07:33,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:07:33,342 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2021-05-02 19:07:33,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-05-02 19:07:33,343 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 2.0238095238095237) internal successors, (170), 83 states have internal predecessors, (170), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 99 [2021-05-02 19:07:33,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:07:33,343 INFO L225 Difference]: With dead ends: 121 [2021-05-02 19:07:33,343 INFO L226 Difference]: Without dead ends: 115 [2021-05-02 19:07:33,344 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6490 ImplicationChecksByTransitivity, 2886.9ms TimeCoverageRelationStatistics Valid=2528, Invalid=12972, Unknown=0, NotChecked=0, Total=15500 [2021-05-02 19:07:33,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-05-02 19:07:33,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 111. [2021-05-02 19:07:33,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 99 states have (on average 1.0505050505050506) internal successors, (104), 101 states have internal predecessors, (104), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:07:33,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 115 transitions. [2021-05-02 19:07:33,346 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 115 transitions. Word has length 99 [2021-05-02 19:07:33,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:07:33,346 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 115 transitions. [2021-05-02 19:07:33,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 84 states, 84 states have (on average 2.0238095238095237) internal successors, (170), 83 states have internal predecessors, (170), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:07:33,346 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 115 transitions. [2021-05-02 19:07:33,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-05-02 19:07:33,346 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:07:33,347 INFO L523 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:07:33,567 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable130 [2021-05-02 19:07:33,567 INFO L428 AbstractCegarLoop]: === Iteration 71 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:07:33,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:07:33,568 INFO L82 PathProgramCache]: Analyzing trace with hash 733316731, now seen corresponding path program 32 times [2021-05-02 19:07:33,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:07:33,568 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610474079] [2021-05-02 19:07:33,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:07:33,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:33,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:07:33,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:33,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:07:33,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:33,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-05-02 19:07:33,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:34,390 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 289 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:07:34,390 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:07:34,390 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610474079] [2021-05-02 19:07:34,391 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610474079] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:07:34,391 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832925967] [2021-05-02 19:07:34,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:07:34,433 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 19:07:34,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:07:34,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 42 conjunts are in the unsatisfiable core [2021-05-02 19:07:34,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:07:34,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:34,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:34,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:34,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:34,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:34,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:34,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:34,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:34,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:34,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:34,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:34,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:34,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:34,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:34,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:34,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:34,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:34,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:34,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:34,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:34,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:34,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:34,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:34,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:34,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:34,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:34,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:34,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:34,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:34,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:34,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:34,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:34,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:34,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:34,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:34,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:34,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:34,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:34,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:34,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:34,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:34,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:34,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:34,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:34,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:34,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:35,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:35,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:35,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:35,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:35,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:35,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:35,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:35,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:35,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:35,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:35,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:35,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:35,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:35,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:35,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:35,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:35,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:35,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:35,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:35,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:35,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:35,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:35,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:35,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:35,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:35,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:35,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:35,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:35,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:35,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:35,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:35,558 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 289 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:07:35,558 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832925967] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:07:35,558 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:07:35,558 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 43] total 84 [2021-05-02 19:07:35,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294376359] [2021-05-02 19:07:35,559 INFO L460 AbstractCegarLoop]: Interpolant automaton has 84 states [2021-05-02 19:07:35,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:07:35,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-05-02 19:07:35,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1235, Invalid=5737, Unknown=0, NotChecked=0, Total=6972 [2021-05-02 19:07:35,559 INFO L87 Difference]: Start difference. First operand 111 states and 115 transitions. Second operand has 84 states, 84 states have (on average 2.0238095238095237) internal successors, (170), 83 states have internal predecessors, (170), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:07:37,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:07:37,639 INFO L93 Difference]: Finished difference Result 115 states and 118 transitions. [2021-05-02 19:07:37,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-05-02 19:07:37,639 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 2.0238095238095237) internal successors, (170), 83 states have internal predecessors, (170), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 99 [2021-05-02 19:07:37,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:07:37,640 INFO L225 Difference]: With dead ends: 115 [2021-05-02 19:07:37,640 INFO L226 Difference]: Without dead ends: 111 [2021-05-02 19:07:37,641 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6077 ImplicationChecksByTransitivity, 3087.6ms TimeCoverageRelationStatistics Valid=2528, Invalid=12972, Unknown=0, NotChecked=0, Total=15500 [2021-05-02 19:07:37,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-05-02 19:07:37,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 110. [2021-05-02 19:07:37,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 98 states have (on average 1.0408163265306123) internal successors, (102), 100 states have internal predecessors, (102), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:07:37,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 113 transitions. [2021-05-02 19:07:37,642 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 113 transitions. Word has length 99 [2021-05-02 19:07:37,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:07:37,642 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 113 transitions. [2021-05-02 19:07:37,642 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 84 states, 84 states have (on average 2.0238095238095237) internal successors, (170), 83 states have internal predecessors, (170), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:07:37,642 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 113 transitions. [2021-05-02 19:07:37,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-05-02 19:07:37,643 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:07:37,643 INFO L523 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:07:37,858 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:07:37,858 INFO L428 AbstractCegarLoop]: === Iteration 72 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:07:37,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:07:37,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1908322527, now seen corresponding path program 33 times [2021-05-02 19:07:37,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:07:37,859 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728014385] [2021-05-02 19:07:37,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:07:37,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:37,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:07:37,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:37,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:07:37,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:38,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-05-02 19:07:38,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:38,571 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 324 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:07:38,571 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:07:38,571 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728014385] [2021-05-02 19:07:38,572 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728014385] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:07:38,572 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757732625] [2021-05-02 19:07:38,572 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:07:38,638 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2021-05-02 19:07:38,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:07:38,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 45 conjunts are in the unsatisfiable core [2021-05-02 19:07:38,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:07:38,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:38,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:38,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:38,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:38,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:38,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:38,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:38,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:38,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:38,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:38,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:38,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:38,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:38,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:38,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:38,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:38,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:38,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:38,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:38,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:39,904 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 324 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:07:39,904 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757732625] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:07:39,904 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:07:39,904 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46] total 88 [2021-05-02 19:07:39,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410408349] [2021-05-02 19:07:39,904 INFO L460 AbstractCegarLoop]: Interpolant automaton has 88 states [2021-05-02 19:07:39,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:07:39,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-05-02 19:07:39,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1357, Invalid=6299, Unknown=0, NotChecked=0, Total=7656 [2021-05-02 19:07:39,905 INFO L87 Difference]: Start difference. First operand 110 states and 113 transitions. Second operand has 88 states, 88 states have (on average 1.9772727272727273) internal successors, (174), 87 states have internal predecessors, (174), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:07:42,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:07:42,465 INFO L93 Difference]: Finished difference Result 128 states and 135 transitions. [2021-05-02 19:07:42,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-05-02 19:07:42,465 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 1.9772727272727273) internal successors, (174), 87 states have internal predecessors, (174), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 101 [2021-05-02 19:07:42,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:07:42,466 INFO L225 Difference]: With dead ends: 128 [2021-05-02 19:07:42,466 INFO L226 Difference]: Without dead ends: 123 [2021-05-02 19:07:42,467 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7277 ImplicationChecksByTransitivity, 3442.9ms TimeCoverageRelationStatistics Valid=2828, Invalid=14994, Unknown=0, NotChecked=0, Total=17822 [2021-05-02 19:07:42,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-05-02 19:07:42,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 113. [2021-05-02 19:07:42,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 101 states have (on average 1.0495049504950495) internal successors, (106), 103 states have internal predecessors, (106), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:07:42,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 117 transitions. [2021-05-02 19:07:42,468 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 117 transitions. Word has length 101 [2021-05-02 19:07:42,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:07:42,468 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 117 transitions. [2021-05-02 19:07:42,469 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 88 states, 88 states have (on average 1.9772727272727273) internal successors, (174), 87 states have internal predecessors, (174), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:07:42,469 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 117 transitions. [2021-05-02 19:07:42,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-05-02 19:07:42,469 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:07:42,469 INFO L523 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:07:42,684 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:07:42,685 INFO L428 AbstractCegarLoop]: === Iteration 73 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:07:42,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:07:42,685 INFO L82 PathProgramCache]: Analyzing trace with hash 337141439, now seen corresponding path program 33 times [2021-05-02 19:07:42,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:07:42,685 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691497484] [2021-05-02 19:07:42,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:07:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:42,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:07:42,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:42,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:07:42,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:43,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-05-02 19:07:43,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:43,602 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 324 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:07:43,602 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:07:43,602 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691497484] [2021-05-02 19:07:43,602 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691497484] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:07:43,602 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184520318] [2021-05-02 19:07:43,603 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:07:43,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2021-05-02 19:07:43,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:07:43,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 45 conjunts are in the unsatisfiable core [2021-05-02 19:07:43,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:07:43,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:43,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:43,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:43,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:43,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:43,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:43,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:43,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:43,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:43,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:43,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:43,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:43,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:43,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:43,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:43,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:43,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:43,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:43,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:43,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:43,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:43,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:43,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:43,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:43,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:43,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:43,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:43,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:44,970 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 324 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:07:44,970 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184520318] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:07:44,970 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:07:44,970 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46] total 88 [2021-05-02 19:07:44,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635354286] [2021-05-02 19:07:44,971 INFO L460 AbstractCegarLoop]: Interpolant automaton has 88 states [2021-05-02 19:07:44,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:07:44,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-05-02 19:07:44,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1357, Invalid=6299, Unknown=0, NotChecked=0, Total=7656 [2021-05-02 19:07:44,972 INFO L87 Difference]: Start difference. First operand 113 states and 117 transitions. Second operand has 88 states, 88 states have (on average 1.9772727272727273) internal successors, (174), 87 states have internal predecessors, (174), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:07:47,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:07:47,156 INFO L93 Difference]: Finished difference Result 123 states and 128 transitions. [2021-05-02 19:07:47,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-05-02 19:07:47,156 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 1.9772727272727273) internal successors, (174), 87 states have internal predecessors, (174), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 101 [2021-05-02 19:07:47,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:07:47,157 INFO L225 Difference]: With dead ends: 123 [2021-05-02 19:07:47,157 INFO L226 Difference]: Without dead ends: 120 [2021-05-02 19:07:47,158 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6955 ImplicationChecksByTransitivity, 3657.0ms TimeCoverageRelationStatistics Valid=2828, Invalid=14994, Unknown=0, NotChecked=0, Total=17822 [2021-05-02 19:07:47,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-05-02 19:07:47,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 116. [2021-05-02 19:07:47,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 104 states have (on average 1.0576923076923077) internal successors, (110), 106 states have internal predecessors, (110), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:07:47,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 121 transitions. [2021-05-02 19:07:47,160 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 121 transitions. Word has length 101 [2021-05-02 19:07:47,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:07:47,160 INFO L480 AbstractCegarLoop]: Abstraction has 116 states and 121 transitions. [2021-05-02 19:07:47,160 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 88 states, 88 states have (on average 1.9772727272727273) internal successors, (174), 87 states have internal predecessors, (174), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:07:47,160 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 121 transitions. [2021-05-02 19:07:47,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-05-02 19:07:47,160 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:07:47,160 INFO L523 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:07:47,375 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2021-05-02 19:07:47,376 INFO L428 AbstractCegarLoop]: === Iteration 74 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:07:47,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:07:47,376 INFO L82 PathProgramCache]: Analyzing trace with hash -370185691, now seen corresponding path program 34 times [2021-05-02 19:07:47,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:07:47,376 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340658658] [2021-05-02 19:07:47,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:07:47,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:47,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:07:47,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:47,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:07:47,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:47,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-05-02 19:07:47,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:48,079 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 324 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:07:48,079 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:07:48,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340658658] [2021-05-02 19:07:48,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340658658] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:07:48,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759544066] [2021-05-02 19:07:48,079 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:07:48,123 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 19:07:48,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:07:48,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 44 conjunts are in the unsatisfiable core [2021-05-02 19:07:48,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:07:48,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:48,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:49,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:49,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:49,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:49,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:49,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:49,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:49,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:49,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:49,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:49,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:49,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:49,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:49,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:49,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:49,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:49,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:49,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:49,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:49,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:49,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:49,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:49,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:49,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:49,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:49,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:49,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:49,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:49,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:49,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:49,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:49,394 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 324 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:07:49,394 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759544066] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:07:49,394 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:07:49,394 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 45] total 88 [2021-05-02 19:07:49,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477905955] [2021-05-02 19:07:49,395 INFO L460 AbstractCegarLoop]: Interpolant automaton has 88 states [2021-05-02 19:07:49,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:07:49,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-05-02 19:07:49,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1359, Invalid=6297, Unknown=0, NotChecked=0, Total=7656 [2021-05-02 19:07:49,396 INFO L87 Difference]: Start difference. First operand 116 states and 121 transitions. Second operand has 88 states, 88 states have (on average 2.022727272727273) internal successors, (178), 87 states have internal predecessors, (178), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:07:51,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:07:51,353 INFO L93 Difference]: Finished difference Result 125 states and 130 transitions. [2021-05-02 19:07:51,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-02 19:07:51,354 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 2.022727272727273) internal successors, (178), 87 states have internal predecessors, (178), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 103 [2021-05-02 19:07:51,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:07:51,354 INFO L225 Difference]: With dead ends: 125 [2021-05-02 19:07:51,355 INFO L226 Difference]: Without dead ends: 119 [2021-05-02 19:07:51,355 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 65 SyntacticMatches, 2 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7172 ImplicationChecksByTransitivity, 3183.3ms TimeCoverageRelationStatistics Valid=2779, Invalid=14251, Unknown=0, NotChecked=0, Total=17030 [2021-05-02 19:07:51,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-05-02 19:07:51,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 115. [2021-05-02 19:07:51,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 103 states have (on average 1.0485436893203883) internal successors, (108), 105 states have internal predecessors, (108), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:07:51,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 119 transitions. [2021-05-02 19:07:51,357 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 119 transitions. Word has length 103 [2021-05-02 19:07:51,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:07:51,357 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 119 transitions. [2021-05-02 19:07:51,357 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 88 states, 88 states have (on average 2.022727272727273) internal successors, (178), 87 states have internal predecessors, (178), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:07:51,357 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 119 transitions. [2021-05-02 19:07:51,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-05-02 19:07:51,358 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:07:51,358 INFO L523 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:07:51,572 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:07:51,573 INFO L428 AbstractCegarLoop]: === Iteration 75 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:07:51,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:07:51,573 INFO L82 PathProgramCache]: Analyzing trace with hash 944170138, now seen corresponding path program 34 times [2021-05-02 19:07:51,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:07:51,573 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842105816] [2021-05-02 19:07:51,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:07:51,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:51,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:07:51,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:51,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:07:51,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:51,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-05-02 19:07:51,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:52,478 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 324 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:07:52,478 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:07:52,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842105816] [2021-05-02 19:07:52,478 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842105816] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:07:52,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348592051] [2021-05-02 19:07:52,478 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:07:52,520 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 19:07:52,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:07:52,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 44 conjunts are in the unsatisfiable core [2021-05-02 19:07:52,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:07:52,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:52,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:52,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:52,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:52,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:52,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:52,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:52,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:52,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:52,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:52,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:52,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:52,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:52,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:52,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:52,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:52,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:52,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:52,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:52,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:52,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:52,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:52,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:52,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:52,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:52,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:52,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:52,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:52,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:52,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:52,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:52,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:52,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:52,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:52,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:52,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:52,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:53,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:53,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:53,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:53,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:53,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:53,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:53,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:53,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:53,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:53,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:53,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:53,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:53,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:53,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:53,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:53,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:53,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:53,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:53,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:53,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:53,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:53,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:53,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:53,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:53,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:53,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:53,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:53,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:53,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:53,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:53,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:53,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:53,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:53,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:53,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:53,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:53,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:53,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:53,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:53,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:53,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:53,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:53,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:53,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:53,768 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 324 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:07:53,769 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348592051] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:07:53,769 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:07:53,769 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 45] total 88 [2021-05-02 19:07:53,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201808051] [2021-05-02 19:07:53,769 INFO L460 AbstractCegarLoop]: Interpolant automaton has 88 states [2021-05-02 19:07:53,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:07:53,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-05-02 19:07:53,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1359, Invalid=6297, Unknown=0, NotChecked=0, Total=7656 [2021-05-02 19:07:53,770 INFO L87 Difference]: Start difference. First operand 115 states and 119 transitions. Second operand has 88 states, 88 states have (on average 2.022727272727273) internal successors, (178), 87 states have internal predecessors, (178), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:07:56,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:07:56,063 INFO L93 Difference]: Finished difference Result 119 states and 122 transitions. [2021-05-02 19:07:56,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-02 19:07:56,063 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 2.022727272727273) internal successors, (178), 87 states have internal predecessors, (178), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 103 [2021-05-02 19:07:56,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:07:56,064 INFO L225 Difference]: With dead ends: 119 [2021-05-02 19:07:56,064 INFO L226 Difference]: Without dead ends: 115 [2021-05-02 19:07:56,065 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 65 SyntacticMatches, 2 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6717 ImplicationChecksByTransitivity, 3372.6ms TimeCoverageRelationStatistics Valid=2779, Invalid=14251, Unknown=0, NotChecked=0, Total=17030 [2021-05-02 19:07:56,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-05-02 19:07:56,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 114. [2021-05-02 19:07:56,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 102 states have (on average 1.0392156862745099) internal successors, (106), 104 states have internal predecessors, (106), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:07:56,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 117 transitions. [2021-05-02 19:07:56,067 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 117 transitions. Word has length 103 [2021-05-02 19:07:56,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:07:56,067 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 117 transitions. [2021-05-02 19:07:56,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 88 states, 88 states have (on average 2.022727272727273) internal successors, (178), 87 states have internal predecessors, (178), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:07:56,067 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 117 transitions. [2021-05-02 19:07:56,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-05-02 19:07:56,067 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:07:56,067 INFO L523 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:07:56,283 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,71 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:07:56,283 INFO L428 AbstractCegarLoop]: === Iteration 76 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:07:56,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:07:56,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1141661312, now seen corresponding path program 35 times [2021-05-02 19:07:56,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:07:56,283 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030414506] [2021-05-02 19:07:56,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:07:56,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:56,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:07:56,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:56,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:07:56,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:56,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-05-02 19:07:56,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:07:57,127 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 361 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:07:57,127 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:07:57,127 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030414506] [2021-05-02 19:07:57,127 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030414506] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:07:57,127 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520635664] [2021-05-02 19:07:57,127 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:07:57,174 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2021-05-02 19:07:57,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:07:57,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 47 conjunts are in the unsatisfiable core [2021-05-02 19:07:57,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:07:57,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:57,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:57,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:57,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:57,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:57,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:57,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:57,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:57,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:57,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:57,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:57,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:57,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:57,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:57,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:57,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:57,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:57,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:57,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:57,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:57,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:57,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:57,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:57,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:57,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:57,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:57,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:57,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:57,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:57,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:57,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:57,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:57,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:57,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:57,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:57,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:57,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:57,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:07:58,563 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 361 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:07:58,563 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520635664] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:07:58,563 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:07:58,563 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 48] total 92 [2021-05-02 19:07:58,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20980047] [2021-05-02 19:07:58,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 92 states [2021-05-02 19:07:58,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:07:58,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-05-02 19:07:58,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1487, Invalid=6885, Unknown=0, NotChecked=0, Total=8372 [2021-05-02 19:07:58,565 INFO L87 Difference]: Start difference. First operand 114 states and 117 transitions. Second operand has 92 states, 92 states have (on average 1.9782608695652173) internal successors, (182), 91 states have internal predecessors, (182), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:08:01,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:08:01,322 INFO L93 Difference]: Finished difference Result 132 states and 139 transitions. [2021-05-02 19:08:01,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-02 19:08:01,322 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 1.9782608695652173) internal successors, (182), 91 states have internal predecessors, (182), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 105 [2021-05-02 19:08:01,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:08:01,323 INFO L225 Difference]: With dead ends: 132 [2021-05-02 19:08:01,323 INFO L226 Difference]: Without dead ends: 127 [2021-05-02 19:08:01,324 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 64 SyntacticMatches, 2 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7998 ImplicationChecksByTransitivity, 3816.4ms TimeCoverageRelationStatistics Valid=3092, Invalid=16368, Unknown=0, NotChecked=0, Total=19460 [2021-05-02 19:08:01,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-05-02 19:08:01,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 117. [2021-05-02 19:08:01,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 105 states have (on average 1.0476190476190477) internal successors, (110), 107 states have internal predecessors, (110), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:08:01,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 121 transitions. [2021-05-02 19:08:01,325 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 121 transitions. Word has length 105 [2021-05-02 19:08:01,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:08:01,326 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 121 transitions. [2021-05-02 19:08:01,326 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 92 states, 92 states have (on average 1.9782608695652173) internal successors, (182), 91 states have internal predecessors, (182), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:08:01,326 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 121 transitions. [2021-05-02 19:08:01,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-05-02 19:08:01,326 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:08:01,326 INFO L523 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:08:01,540 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:08:01,541 INFO L428 AbstractCegarLoop]: === Iteration 77 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:08:01,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:08:01,541 INFO L82 PathProgramCache]: Analyzing trace with hash 686130526, now seen corresponding path program 35 times [2021-05-02 19:08:01,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:08:01,541 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119589657] [2021-05-02 19:08:01,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:08:01,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:08:01,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:08:01,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:08:01,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:08:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:08:01,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-05-02 19:08:01,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:08:02,511 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 361 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:08:02,512 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:08:02,512 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119589657] [2021-05-02 19:08:02,512 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119589657] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:08:02,512 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981479617] [2021-05-02 19:08:02,512 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:08:02,566 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2021-05-02 19:08:02,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:08:02,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 47 conjunts are in the unsatisfiable core [2021-05-02 19:08:02,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:08:02,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:02,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:02,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:02,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:02,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:02,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:02,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:02,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:02,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:02,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:02,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:02,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:02,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:02,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:02,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:02,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:02,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:02,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:02,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:02,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:02,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:02,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:02,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:02,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:02,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:02,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:02,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:02,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:02,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:02,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:02,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:02,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:03,969 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 361 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:08:03,969 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981479617] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:08:03,969 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:08:03,969 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 48] total 92 [2021-05-02 19:08:03,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610893116] [2021-05-02 19:08:03,970 INFO L460 AbstractCegarLoop]: Interpolant automaton has 92 states [2021-05-02 19:08:03,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:08:03,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-05-02 19:08:03,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1487, Invalid=6885, Unknown=0, NotChecked=0, Total=8372 [2021-05-02 19:08:03,971 INFO L87 Difference]: Start difference. First operand 117 states and 121 transitions. Second operand has 92 states, 92 states have (on average 1.9782608695652173) internal successors, (182), 91 states have internal predecessors, (182), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:08:06,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:08:06,949 INFO L93 Difference]: Finished difference Result 127 states and 132 transitions. [2021-05-02 19:08:06,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-02 19:08:06,950 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 1.9782608695652173) internal successors, (182), 91 states have internal predecessors, (182), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 105 [2021-05-02 19:08:06,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:08:06,950 INFO L225 Difference]: With dead ends: 127 [2021-05-02 19:08:06,950 INFO L226 Difference]: Without dead ends: 124 [2021-05-02 19:08:06,951 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 64 SyntacticMatches, 2 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7639 ImplicationChecksByTransitivity, 3949.3ms TimeCoverageRelationStatistics Valid=3092, Invalid=16368, Unknown=0, NotChecked=0, Total=19460 [2021-05-02 19:08:06,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-05-02 19:08:06,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 120. [2021-05-02 19:08:06,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 108 states have (on average 1.0555555555555556) internal successors, (114), 110 states have internal predecessors, (114), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:08:06,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 125 transitions. [2021-05-02 19:08:06,953 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 125 transitions. Word has length 105 [2021-05-02 19:08:06,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:08:06,953 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 125 transitions. [2021-05-02 19:08:06,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 92 states, 92 states have (on average 1.9782608695652173) internal successors, (182), 91 states have internal predecessors, (182), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:08:06,953 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 125 transitions. [2021-05-02 19:08:06,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-05-02 19:08:06,953 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:08:06,954 INFO L523 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:08:07,154 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2021-05-02 19:08:07,154 INFO L428 AbstractCegarLoop]: === Iteration 78 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:08:07,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:08:07,154 INFO L82 PathProgramCache]: Analyzing trace with hash 877828, now seen corresponding path program 36 times [2021-05-02 19:08:07,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:08:07,155 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103657509] [2021-05-02 19:08:07,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:08:07,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:08:07,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:08:07,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:08:07,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:08:07,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:08:07,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-05-02 19:08:07,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:08:07,959 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 361 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:08:07,960 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:08:07,960 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103657509] [2021-05-02 19:08:07,960 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103657509] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:08:07,960 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100260763] [2021-05-02 19:08:07,960 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:08:08,017 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2021-05-02 19:08:08,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:08:08,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 46 conjunts are in the unsatisfiable core [2021-05-02 19:08:08,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:08:08,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:08,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:09,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:09,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:09,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:09,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:09,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:09,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:09,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:09,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:09,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:09,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:09,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:09,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:09,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:09,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:09,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:09,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:09,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:09,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:09,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:09,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:09,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:09,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:09,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:09,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:09,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:09,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:09,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:09,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:09,383 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 361 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:08:09,384 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100260763] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:08:09,384 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:08:09,384 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 47] total 92 [2021-05-02 19:08:09,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313976172] [2021-05-02 19:08:09,384 INFO L460 AbstractCegarLoop]: Interpolant automaton has 92 states [2021-05-02 19:08:09,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:08:09,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-05-02 19:08:09,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1489, Invalid=6883, Unknown=0, NotChecked=0, Total=8372 [2021-05-02 19:08:09,385 INFO L87 Difference]: Start difference. First operand 120 states and 125 transitions. Second operand has 92 states, 92 states have (on average 2.0217391304347827) internal successors, (186), 91 states have internal predecessors, (186), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:08:12,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:08:12,025 INFO L93 Difference]: Finished difference Result 129 states and 134 transitions. [2021-05-02 19:08:12,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-02 19:08:12,026 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 2.0217391304347827) internal successors, (186), 91 states have internal predecessors, (186), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 107 [2021-05-02 19:08:12,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:08:12,027 INFO L225 Difference]: With dead ends: 129 [2021-05-02 19:08:12,027 INFO L226 Difference]: Without dead ends: 123 [2021-05-02 19:08:12,028 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 67 SyntacticMatches, 2 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7888 ImplicationChecksByTransitivity, 3520.2ms TimeCoverageRelationStatistics Valid=3042, Invalid=15590, Unknown=0, NotChecked=0, Total=18632 [2021-05-02 19:08:12,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-05-02 19:08:12,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2021-05-02 19:08:12,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 107 states have (on average 1.0467289719626167) internal successors, (112), 109 states have internal predecessors, (112), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:08:12,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 123 transitions. [2021-05-02 19:08:12,029 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 123 transitions. Word has length 107 [2021-05-02 19:08:12,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:08:12,029 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 123 transitions. [2021-05-02 19:08:12,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 92 states, 92 states have (on average 2.0217391304347827) internal successors, (186), 91 states have internal predecessors, (186), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:08:12,030 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 123 transitions. [2021-05-02 19:08:12,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-05-02 19:08:12,030 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:08:12,030 INFO L523 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:08:12,245 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:08:12,245 INFO L428 AbstractCegarLoop]: === Iteration 79 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:08:12,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:08:12,245 INFO L82 PathProgramCache]: Analyzing trace with hash 365941369, now seen corresponding path program 36 times [2021-05-02 19:08:12,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:08:12,245 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428977364] [2021-05-02 19:08:12,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:08:12,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:08:12,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:08:12,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:08:12,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:08:12,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:08:12,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-05-02 19:08:12,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:08:13,242 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 361 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:08:13,242 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:08:13,242 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428977364] [2021-05-02 19:08:13,242 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428977364] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:08:13,242 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470204410] [2021-05-02 19:08:13,242 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:08:13,300 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2021-05-02 19:08:13,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:08:13,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 46 conjunts are in the unsatisfiable core [2021-05-02 19:08:13,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:08:13,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:13,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:13,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:13,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:13,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:13,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:13,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:13,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:13,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:13,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:13,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:13,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:13,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:13,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:13,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:13,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:13,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:13,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:13,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:13,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:13,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:13,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:13,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:13,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:13,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:13,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:13,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:13,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:13,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:13,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:13,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:13,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:13,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:13,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:13,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:13,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:13,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:13,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:13,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:13,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:13,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:13,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:13,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:13,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:13,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:13,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:13,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:13,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:13,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:13,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:14,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:14,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:14,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:14,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:14,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:14,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:14,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:14,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:14,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:14,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:14,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:14,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:14,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:14,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:14,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:14,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:14,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:14,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:14,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:14,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:14,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:14,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:14,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:14,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:14,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:14,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:14,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:14,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:14,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:14,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:14,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:14,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:14,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:14,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:14,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:14,709 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 361 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:08:14,710 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470204410] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:08:14,710 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:08:14,710 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 47] total 92 [2021-05-02 19:08:14,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472618644] [2021-05-02 19:08:14,710 INFO L460 AbstractCegarLoop]: Interpolant automaton has 92 states [2021-05-02 19:08:14,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:08:14,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-05-02 19:08:14,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1489, Invalid=6883, Unknown=0, NotChecked=0, Total=8372 [2021-05-02 19:08:14,711 INFO L87 Difference]: Start difference. First operand 119 states and 123 transitions. Second operand has 92 states, 92 states have (on average 2.0217391304347827) internal successors, (186), 91 states have internal predecessors, (186), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:08:17,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:08:17,365 INFO L93 Difference]: Finished difference Result 123 states and 126 transitions. [2021-05-02 19:08:17,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-02 19:08:17,366 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 2.0217391304347827) internal successors, (186), 91 states have internal predecessors, (186), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 107 [2021-05-02 19:08:17,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:08:17,366 INFO L225 Difference]: With dead ends: 123 [2021-05-02 19:08:17,366 INFO L226 Difference]: Without dead ends: 119 [2021-05-02 19:08:17,367 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 67 SyntacticMatches, 2 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7389 ImplicationChecksByTransitivity, 3798.5ms TimeCoverageRelationStatistics Valid=3042, Invalid=15590, Unknown=0, NotChecked=0, Total=18632 [2021-05-02 19:08:17,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-05-02 19:08:17,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 118. [2021-05-02 19:08:17,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 106 states have (on average 1.0377358490566038) internal successors, (110), 108 states have internal predecessors, (110), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:08:17,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 121 transitions. [2021-05-02 19:08:17,369 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 121 transitions. Word has length 107 [2021-05-02 19:08:17,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:08:17,369 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 121 transitions. [2021-05-02 19:08:17,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 92 states, 92 states have (on average 2.0217391304347827) internal successors, (186), 91 states have internal predecessors, (186), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:08:17,369 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 121 transitions. [2021-05-02 19:08:17,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-05-02 19:08:17,370 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:08:17,370 INFO L523 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:08:17,584 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable148 [2021-05-02 19:08:17,585 INFO L428 AbstractCegarLoop]: === Iteration 80 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:08:17,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:08:17,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1526240159, now seen corresponding path program 37 times [2021-05-02 19:08:17,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:08:17,585 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322354623] [2021-05-02 19:08:17,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:08:17,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:08:17,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:08:17,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:08:17,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:08:17,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:08:18,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-05-02 19:08:18,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:08:18,449 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 400 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:08:18,449 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:08:18,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322354623] [2021-05-02 19:08:18,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322354623] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:08:18,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642522656] [2021-05-02 19:08:18,449 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:08:18,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:08:18,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 49 conjunts are in the unsatisfiable core [2021-05-02 19:08:18,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:08:18,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:18,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:18,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:18,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:18,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:18,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:18,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:18,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:18,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:18,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:18,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:18,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:18,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:18,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:18,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:18,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:18,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:18,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:18,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:18,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:18,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:18,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:18,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:18,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:19,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:20,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:20,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:20,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:20,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:20,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:20,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:20,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:20,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:20,098 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 400 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:08:20,098 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642522656] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:08:20,099 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:08:20,099 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50] total 96 [2021-05-02 19:08:20,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579825817] [2021-05-02 19:08:20,099 INFO L460 AbstractCegarLoop]: Interpolant automaton has 96 states [2021-05-02 19:08:20,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:08:20,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-05-02 19:08:20,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1623, Invalid=7497, Unknown=0, NotChecked=0, Total=9120 [2021-05-02 19:08:20,100 INFO L87 Difference]: Start difference. First operand 118 states and 121 transitions. Second operand has 96 states, 96 states have (on average 1.9791666666666667) internal successors, (190), 95 states have internal predecessors, (190), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:08:22,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:08:22,728 INFO L93 Difference]: Finished difference Result 136 states and 143 transitions. [2021-05-02 19:08:22,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-02 19:08:22,728 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.9791666666666667) internal successors, (190), 95 states have internal predecessors, (190), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 109 [2021-05-02 19:08:22,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:08:22,729 INFO L225 Difference]: With dead ends: 136 [2021-05-02 19:08:22,729 INFO L226 Difference]: Without dead ends: 131 [2021-05-02 19:08:22,730 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8753 ImplicationChecksByTransitivity, 4251.2ms TimeCoverageRelationStatistics Valid=3368, Invalid=17802, Unknown=0, NotChecked=0, Total=21170 [2021-05-02 19:08:22,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-05-02 19:08:22,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 121. [2021-05-02 19:08:22,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 109 states have (on average 1.0458715596330275) internal successors, (114), 111 states have internal predecessors, (114), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:08:22,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 125 transitions. [2021-05-02 19:08:22,732 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 125 transitions. Word has length 109 [2021-05-02 19:08:22,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:08:22,732 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 125 transitions. [2021-05-02 19:08:22,732 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 96 states, 96 states have (on average 1.9791666666666667) internal successors, (190), 95 states have internal predecessors, (190), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:08:22,732 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 125 transitions. [2021-05-02 19:08:22,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-05-02 19:08:22,732 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:08:22,732 INFO L523 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:08:22,947 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:08:22,948 INFO L428 AbstractCegarLoop]: === Iteration 81 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:08:22,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:08:22,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1403075517, now seen corresponding path program 37 times [2021-05-02 19:08:22,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:08:22,948 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163065496] [2021-05-02 19:08:22,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:08:22,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:08:23,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:08:23,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:08:23,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:08:23,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:08:23,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-05-02 19:08:23,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:08:24,075 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 400 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:08:24,075 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:08:24,075 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163065496] [2021-05-02 19:08:24,075 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163065496] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:08:24,075 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228326154] [2021-05-02 19:08:24,075 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:08:24,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:08:24,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 49 conjunts are in the unsatisfiable core [2021-05-02 19:08:24,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:08:24,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:24,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:25,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:25,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:25,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:25,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:25,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:25,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:25,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:25,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:25,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:25,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:25,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:25,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:25,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:25,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:25,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:25,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:25,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:25,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:25,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:25,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:25,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:25,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:25,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:25,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:25,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:25,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:25,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:25,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:25,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:25,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:25,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:25,743 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 400 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:08:25,743 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228326154] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:08:25,743 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:08:25,743 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50] total 96 [2021-05-02 19:08:25,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921953249] [2021-05-02 19:08:25,743 INFO L460 AbstractCegarLoop]: Interpolant automaton has 96 states [2021-05-02 19:08:25,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:08:25,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-05-02 19:08:25,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1623, Invalid=7497, Unknown=0, NotChecked=0, Total=9120 [2021-05-02 19:08:25,744 INFO L87 Difference]: Start difference. First operand 121 states and 125 transitions. Second operand has 96 states, 96 states have (on average 1.9791666666666667) internal successors, (190), 95 states have internal predecessors, (190), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:08:28,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:08:28,373 INFO L93 Difference]: Finished difference Result 131 states and 136 transitions. [2021-05-02 19:08:28,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-02 19:08:28,374 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.9791666666666667) internal successors, (190), 95 states have internal predecessors, (190), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 109 [2021-05-02 19:08:28,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:08:28,374 INFO L225 Difference]: With dead ends: 131 [2021-05-02 19:08:28,374 INFO L226 Difference]: Without dead ends: 128 [2021-05-02 19:08:28,375 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8355 ImplicationChecksByTransitivity, 4437.1ms TimeCoverageRelationStatistics Valid=3368, Invalid=17802, Unknown=0, NotChecked=0, Total=21170 [2021-05-02 19:08:28,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-05-02 19:08:28,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 124. [2021-05-02 19:08:28,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 112 states have (on average 1.0535714285714286) internal successors, (118), 114 states have internal predecessors, (118), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:08:28,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 129 transitions. [2021-05-02 19:08:28,377 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 129 transitions. Word has length 109 [2021-05-02 19:08:28,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:08:28,377 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 129 transitions. [2021-05-02 19:08:28,377 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 96 states, 96 states have (on average 1.9791666666666667) internal successors, (190), 95 states have internal predecessors, (190), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:08:28,377 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 129 transitions. [2021-05-02 19:08:28,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-05-02 19:08:28,377 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:08:28,378 INFO L523 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:08:28,593 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:08:28,593 INFO L428 AbstractCegarLoop]: === Iteration 82 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:08:28,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:08:28,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1790246819, now seen corresponding path program 38 times [2021-05-02 19:08:28,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:08:28,593 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946019050] [2021-05-02 19:08:28,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:08:28,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:08:28,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:08:28,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:08:28,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:08:28,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:08:29,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-05-02 19:08:29,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:08:29,443 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 400 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:08:29,443 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:08:29,443 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946019050] [2021-05-02 19:08:29,443 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946019050] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:08:29,443 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903108554] [2021-05-02 19:08:29,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:08:29,487 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 19:08:29,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:08:29,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 48 conjunts are in the unsatisfiable core [2021-05-02 19:08:29,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:08:29,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:29,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:29,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:29,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:29,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:29,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:29,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:29,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:29,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:29,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:29,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:29,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:29,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:29,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:29,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:29,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:29,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:29,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:29,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:29,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:29,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:29,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:29,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:29,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:29,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:29,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:30,946 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 400 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:08:30,946 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903108554] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:08:30,946 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:08:30,947 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 49] total 96 [2021-05-02 19:08:30,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999771086] [2021-05-02 19:08:30,947 INFO L460 AbstractCegarLoop]: Interpolant automaton has 96 states [2021-05-02 19:08:30,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:08:30,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-05-02 19:08:30,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1625, Invalid=7495, Unknown=0, NotChecked=0, Total=9120 [2021-05-02 19:08:30,948 INFO L87 Difference]: Start difference. First operand 124 states and 129 transitions. Second operand has 96 states, 96 states have (on average 2.0208333333333335) internal successors, (194), 95 states have internal predecessors, (194), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:08:33,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:08:33,664 INFO L93 Difference]: Finished difference Result 133 states and 138 transitions. [2021-05-02 19:08:33,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-02 19:08:33,665 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 2.0208333333333335) internal successors, (194), 95 states have internal predecessors, (194), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 111 [2021-05-02 19:08:33,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:08:33,666 INFO L225 Difference]: With dead ends: 133 [2021-05-02 19:08:33,666 INFO L226 Difference]: Without dead ends: 127 [2021-05-02 19:08:33,667 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8638 ImplicationChecksByTransitivity, 3768.7ms TimeCoverageRelationStatistics Valid=3317, Invalid=16989, Unknown=0, NotChecked=0, Total=20306 [2021-05-02 19:08:33,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-05-02 19:08:33,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 123. [2021-05-02 19:08:33,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 111 states have (on average 1.045045045045045) internal successors, (116), 113 states have internal predecessors, (116), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:08:33,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 127 transitions. [2021-05-02 19:08:33,668 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 127 transitions. Word has length 111 [2021-05-02 19:08:33,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:08:33,668 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 127 transitions. [2021-05-02 19:08:33,669 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 96 states, 96 states have (on average 2.0208333333333335) internal successors, (194), 95 states have internal predecessors, (194), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:08:33,669 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 127 transitions. [2021-05-02 19:08:33,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-05-02 19:08:33,669 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:08:33,669 INFO L523 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:08:33,884 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,78 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:08:33,885 INFO L428 AbstractCegarLoop]: === Iteration 83 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:08:33,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:08:33,885 INFO L82 PathProgramCache]: Analyzing trace with hash 418488344, now seen corresponding path program 38 times [2021-05-02 19:08:33,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:08:33,885 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765986115] [2021-05-02 19:08:33,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:08:33,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:08:33,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:08:33,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:08:33,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:08:33,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:08:34,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-05-02 19:08:34,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:08:35,047 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 400 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:08:35,047 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:08:35,047 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765986115] [2021-05-02 19:08:35,047 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765986115] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:08:35,047 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149496428] [2021-05-02 19:08:35,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:08:35,092 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 19:08:35,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:08:35,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 48 conjunts are in the unsatisfiable core [2021-05-02 19:08:35,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:08:35,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:35,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:36,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:36,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:36,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:36,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:36,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:36,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:36,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:36,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:36,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:36,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:36,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:36,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:36,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:36,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:36,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:36,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:36,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:36,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:36,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:36,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:36,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:36,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:36,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:36,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:36,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:36,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:36,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:36,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:36,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:36,645 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 400 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:08:36,645 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149496428] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:08:36,645 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:08:36,645 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 49] total 96 [2021-05-02 19:08:36,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445245741] [2021-05-02 19:08:36,645 INFO L460 AbstractCegarLoop]: Interpolant automaton has 96 states [2021-05-02 19:08:36,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:08:36,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-05-02 19:08:36,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1625, Invalid=7495, Unknown=0, NotChecked=0, Total=9120 [2021-05-02 19:08:36,647 INFO L87 Difference]: Start difference. First operand 123 states and 127 transitions. Second operand has 96 states, 96 states have (on average 2.0208333333333335) internal successors, (194), 95 states have internal predecessors, (194), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:08:39,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:08:39,059 INFO L93 Difference]: Finished difference Result 127 states and 130 transitions. [2021-05-02 19:08:39,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-02 19:08:39,060 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 2.0208333333333335) internal successors, (194), 95 states have internal predecessors, (194), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 111 [2021-05-02 19:08:39,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:08:39,060 INFO L225 Difference]: With dead ends: 127 [2021-05-02 19:08:39,060 INFO L226 Difference]: Without dead ends: 123 [2021-05-02 19:08:39,061 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8093 ImplicationChecksByTransitivity, 4212.6ms TimeCoverageRelationStatistics Valid=3317, Invalid=16989, Unknown=0, NotChecked=0, Total=20306 [2021-05-02 19:08:39,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-05-02 19:08:39,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 122. [2021-05-02 19:08:39,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 110 states have (on average 1.0363636363636364) internal successors, (114), 112 states have internal predecessors, (114), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:08:39,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 125 transitions. [2021-05-02 19:08:39,063 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 125 transitions. Word has length 111 [2021-05-02 19:08:39,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:08:39,063 INFO L480 AbstractCegarLoop]: Abstraction has 122 states and 125 transitions. [2021-05-02 19:08:39,063 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 96 states, 96 states have (on average 2.0208333333333335) internal successors, (194), 95 states have internal predecessors, (194), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:08:39,063 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 125 transitions. [2021-05-02 19:08:39,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-05-02 19:08:39,064 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:08:39,064 INFO L523 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:08:39,276 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2021-05-02 19:08:39,277 INFO L428 AbstractCegarLoop]: === Iteration 84 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:08:39,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:08:39,277 INFO L82 PathProgramCache]: Analyzing trace with hash 484275582, now seen corresponding path program 39 times [2021-05-02 19:08:39,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:08:39,277 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139706109] [2021-05-02 19:08:39,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:08:39,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:08:39,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:08:39,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:08:39,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:08:39,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:08:39,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-05-02 19:08:39,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:08:40,238 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 441 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:08:40,239 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:08:40,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139706109] [2021-05-02 19:08:40,239 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139706109] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:08:40,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448843747] [2021-05-02 19:08:40,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:08:40,312 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-05-02 19:08:40,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:08:40,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 51 conjunts are in the unsatisfiable core [2021-05-02 19:08:40,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:08:40,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:40,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:40,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:40,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:40,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:40,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:40,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:40,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:40,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:40,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:40,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:40,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:40,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:40,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:40,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:40,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:40,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:40,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:40,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:40,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:40,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:40,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:40,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:40,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:40,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:40,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:40,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:40,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:40,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:40,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:40,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:40,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:41,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:42,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:42,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:42,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:42,013 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 441 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:08:42,013 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448843747] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:08:42,013 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:08:42,013 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 52] total 100 [2021-05-02 19:08:42,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818661254] [2021-05-02 19:08:42,014 INFO L460 AbstractCegarLoop]: Interpolant automaton has 100 states [2021-05-02 19:08:42,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:08:42,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-05-02 19:08:42,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1765, Invalid=8135, Unknown=0, NotChecked=0, Total=9900 [2021-05-02 19:08:42,015 INFO L87 Difference]: Start difference. First operand 122 states and 125 transitions. Second operand has 100 states, 100 states have (on average 1.98) internal successors, (198), 99 states have internal predecessors, (198), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:08:44,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:08:44,738 INFO L93 Difference]: Finished difference Result 140 states and 147 transitions. [2021-05-02 19:08:44,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-05-02 19:08:44,739 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 1.98) internal successors, (198), 99 states have internal predecessors, (198), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 113 [2021-05-02 19:08:44,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:08:44,740 INFO L225 Difference]: With dead ends: 140 [2021-05-02 19:08:44,740 INFO L226 Difference]: Without dead ends: 135 [2021-05-02 19:08:44,741 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9542 ImplicationChecksByTransitivity, 4544.0ms TimeCoverageRelationStatistics Valid=3656, Invalid=19296, Unknown=0, NotChecked=0, Total=22952 [2021-05-02 19:08:44,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-05-02 19:08:44,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 125. [2021-05-02 19:08:44,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 113 states have (on average 1.0442477876106195) internal successors, (118), 115 states have internal predecessors, (118), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:08:44,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 129 transitions. [2021-05-02 19:08:44,742 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 129 transitions. Word has length 113 [2021-05-02 19:08:44,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:08:44,742 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 129 transitions. [2021-05-02 19:08:44,742 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 100 states, 100 states have (on average 1.98) internal successors, (198), 99 states have internal predecessors, (198), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:08:44,743 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 129 transitions. [2021-05-02 19:08:44,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-05-02 19:08:44,743 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:08:44,743 INFO L523 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:08:44,956 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2021-05-02 19:08:44,957 INFO L428 AbstractCegarLoop]: === Iteration 85 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:08:44,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:08:44,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1902325284, now seen corresponding path program 39 times [2021-05-02 19:08:44,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:08:44,957 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926408587] [2021-05-02 19:08:44,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:08:44,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:08:45,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:08:45,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:08:45,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:08:45,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:08:45,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-05-02 19:08:45,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:08:46,208 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 441 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:08:46,208 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:08:46,208 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926408587] [2021-05-02 19:08:46,209 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926408587] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:08:46,209 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312326046] [2021-05-02 19:08:46,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:08:46,281 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-05-02 19:08:46,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:08:46,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 51 conjunts are in the unsatisfiable core [2021-05-02 19:08:46,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:08:46,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:46,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:46,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:46,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:46,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:46,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:46,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:46,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:46,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:46,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:46,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:46,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:46,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:46,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:46,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:46,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:46,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:46,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:46,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:46,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:46,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:46,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:46,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:46,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:46,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:46,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:46,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:46,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:46,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:46,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:46,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:46,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:46,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:46,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:46,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:46,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:46,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:46,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:46,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:46,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:46,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:46,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:46,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:46,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:46,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:46,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:46,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:46,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:47,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:47,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:47,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:47,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:47,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:47,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:47,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:47,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:47,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:47,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:47,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:47,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:47,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:47,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:47,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:47,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:47,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:47,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:47,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:47,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:47,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:47,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:47,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:47,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:47,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:47,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:47,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:47,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:47,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:47,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:47,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:47,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:47,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:47,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:47,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:47,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:47,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:47,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:47,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:47,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:47,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:47,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:48,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:48,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:48,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:48,074 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 441 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:08:48,074 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312326046] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:08:48,074 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:08:48,074 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 52] total 100 [2021-05-02 19:08:48,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709477999] [2021-05-02 19:08:48,075 INFO L460 AbstractCegarLoop]: Interpolant automaton has 100 states [2021-05-02 19:08:48,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:08:48,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-05-02 19:08:48,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1765, Invalid=8135, Unknown=0, NotChecked=0, Total=9900 [2021-05-02 19:08:48,076 INFO L87 Difference]: Start difference. First operand 125 states and 129 transitions. Second operand has 100 states, 100 states have (on average 1.98) internal successors, (198), 99 states have internal predecessors, (198), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:08:50,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:08:50,828 INFO L93 Difference]: Finished difference Result 135 states and 140 transitions. [2021-05-02 19:08:50,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-05-02 19:08:50,829 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 1.98) internal successors, (198), 99 states have internal predecessors, (198), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 113 [2021-05-02 19:08:50,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:08:50,829 INFO L225 Difference]: With dead ends: 135 [2021-05-02 19:08:50,829 INFO L226 Difference]: Without dead ends: 132 [2021-05-02 19:08:50,830 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9103 ImplicationChecksByTransitivity, 4840.0ms TimeCoverageRelationStatistics Valid=3656, Invalid=19296, Unknown=0, NotChecked=0, Total=22952 [2021-05-02 19:08:50,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-05-02 19:08:50,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 128. [2021-05-02 19:08:50,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 116 states have (on average 1.0517241379310345) internal successors, (122), 118 states have internal predecessors, (122), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:08:50,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 133 transitions. [2021-05-02 19:08:50,832 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 133 transitions. Word has length 113 [2021-05-02 19:08:50,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:08:50,832 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 133 transitions. [2021-05-02 19:08:50,832 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 100 states, 100 states have (on average 1.98) internal successors, (198), 99 states have internal predecessors, (198), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:08:50,832 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 133 transitions. [2021-05-02 19:08:50,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-05-02 19:08:50,833 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:08:50,833 INFO L523 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:08:51,048 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:08:51,049 INFO L428 AbstractCegarLoop]: === Iteration 86 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:08:51,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:08:51,049 INFO L82 PathProgramCache]: Analyzing trace with hash -719091198, now seen corresponding path program 40 times [2021-05-02 19:08:51,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:08:51,049 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283194762] [2021-05-02 19:08:51,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:08:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:08:51,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:08:51,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:08:51,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:08:51,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:08:51,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-05-02 19:08:51,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:08:52,010 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 441 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:08:52,010 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:08:52,010 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283194762] [2021-05-02 19:08:52,010 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283194762] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:08:52,010 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384969683] [2021-05-02 19:08:52,011 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:08:52,055 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 19:08:52,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:08:52,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 50 conjunts are in the unsatisfiable core [2021-05-02 19:08:52,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:08:52,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:52,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:52,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:52,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:52,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:52,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:52,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:52,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:52,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:52,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:52,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:52,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:52,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:52,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:52,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:52,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:52,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:52,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:52,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:52,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:52,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:52,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:52,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:52,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:52,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:52,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:52,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:52,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:52,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:52,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:52,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:52,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:52,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:52,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:52,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:52,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:52,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:52,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:52,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:52,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:53,777 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 441 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:08:53,777 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384969683] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:08:53,777 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:08:53,778 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 51] total 100 [2021-05-02 19:08:53,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826867855] [2021-05-02 19:08:53,778 INFO L460 AbstractCegarLoop]: Interpolant automaton has 100 states [2021-05-02 19:08:53,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:08:53,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-05-02 19:08:53,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1767, Invalid=8133, Unknown=0, NotChecked=0, Total=9900 [2021-05-02 19:08:53,779 INFO L87 Difference]: Start difference. First operand 128 states and 133 transitions. Second operand has 100 states, 100 states have (on average 2.02) internal successors, (202), 99 states have internal predecessors, (202), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:08:56,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:08:56,946 INFO L93 Difference]: Finished difference Result 137 states and 142 transitions. [2021-05-02 19:08:56,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-05-02 19:08:56,947 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 2.02) internal successors, (202), 99 states have internal predecessors, (202), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 115 [2021-05-02 19:08:56,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:08:56,948 INFO L225 Difference]: With dead ends: 137 [2021-05-02 19:08:56,948 INFO L226 Difference]: Without dead ends: 131 [2021-05-02 19:08:56,949 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 71 SyntacticMatches, 2 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9422 ImplicationChecksByTransitivity, 4402.0ms TimeCoverageRelationStatistics Valid=3604, Invalid=18448, Unknown=0, NotChecked=0, Total=22052 [2021-05-02 19:08:56,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-05-02 19:08:56,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 127. [2021-05-02 19:08:56,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 115 states have (on average 1.0434782608695652) internal successors, (120), 117 states have internal predecessors, (120), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:08:56,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 131 transitions. [2021-05-02 19:08:56,951 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 131 transitions. Word has length 115 [2021-05-02 19:08:56,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:08:56,951 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 131 transitions. [2021-05-02 19:08:56,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 100 states, 100 states have (on average 2.02) internal successors, (202), 99 states have internal predecessors, (202), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:08:56,951 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 131 transitions. [2021-05-02 19:08:56,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-05-02 19:08:56,951 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:08:56,952 INFO L523 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:08:57,165 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:08:57,165 INFO L428 AbstractCegarLoop]: === Iteration 87 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:08:57,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:08:57,165 INFO L82 PathProgramCache]: Analyzing trace with hash -434528905, now seen corresponding path program 40 times [2021-05-02 19:08:57,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:08:57,165 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516232382] [2021-05-02 19:08:57,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:08:57,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:08:57,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:08:57,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:08:57,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:08:57,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:08:57,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-05-02 19:08:57,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:08:58,434 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 441 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:08:58,434 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:08:58,434 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516232382] [2021-05-02 19:08:58,434 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516232382] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:08:58,434 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629649486] [2021-05-02 19:08:58,434 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:08:58,486 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 19:08:58,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:08:58,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 50 conjunts are in the unsatisfiable core [2021-05-02 19:08:58,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:08:58,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:58,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:58,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:58,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:58,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:58,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:58,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:58,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:58,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:58,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:58,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:58,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:58,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:58,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:58,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:58,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:58,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:58,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:58,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:58,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:58,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:58,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:58,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:58,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:58,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:58,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:58,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:58,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:58,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:58,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:58,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:58,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:58,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:58,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:58,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:58,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:59,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:59,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:59,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:59,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:59,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:59,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:59,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:59,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:59,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:59,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:59,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:59,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:59,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:59,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:59,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:59,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:59,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:59,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:59,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:59,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:59,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:59,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:59,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:59,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:59,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:59,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:59,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:59,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:59,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:59,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:59,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:59,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:59,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:59,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:59,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:59,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:59,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:59,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:59,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:59,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:59,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:59,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:59,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:59,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:59,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:59,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:59,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:08:59,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:00,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:00,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:00,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:00,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:00,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:00,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:00,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:00,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:00,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:00,236 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 441 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:09:00,236 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629649486] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:09:00,236 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:09:00,236 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 51] total 100 [2021-05-02 19:09:00,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054803412] [2021-05-02 19:09:00,237 INFO L460 AbstractCegarLoop]: Interpolant automaton has 100 states [2021-05-02 19:09:00,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:09:00,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-05-02 19:09:00,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1767, Invalid=8133, Unknown=0, NotChecked=0, Total=9900 [2021-05-02 19:09:00,238 INFO L87 Difference]: Start difference. First operand 127 states and 131 transitions. Second operand has 100 states, 100 states have (on average 2.02) internal successors, (202), 99 states have internal predecessors, (202), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:09:02,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:09:02,853 INFO L93 Difference]: Finished difference Result 131 states and 134 transitions. [2021-05-02 19:09:02,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-05-02 19:09:02,853 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 2.02) internal successors, (202), 99 states have internal predecessors, (202), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 115 [2021-05-02 19:09:02,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:09:02,854 INFO L225 Difference]: With dead ends: 131 [2021-05-02 19:09:02,854 INFO L226 Difference]: Without dead ends: 127 [2021-05-02 19:09:02,855 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 71 SyntacticMatches, 2 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8829 ImplicationChecksByTransitivity, 4655.3ms TimeCoverageRelationStatistics Valid=3604, Invalid=18448, Unknown=0, NotChecked=0, Total=22052 [2021-05-02 19:09:02,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-05-02 19:09:02,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 126. [2021-05-02 19:09:02,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 114 states have (on average 1.0350877192982457) internal successors, (118), 116 states have internal predecessors, (118), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:09:02,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 129 transitions. [2021-05-02 19:09:02,857 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 129 transitions. Word has length 115 [2021-05-02 19:09:02,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:09:02,857 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 129 transitions. [2021-05-02 19:09:02,857 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 100 states, 100 states have (on average 2.02) internal successors, (202), 99 states have internal predecessors, (202), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:09:02,857 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 129 transitions. [2021-05-02 19:09:02,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-05-02 19:09:02,857 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:09:02,857 INFO L523 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:09:03,073 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,83 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:09:03,073 INFO L428 AbstractCegarLoop]: === Iteration 88 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:09:03,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:09:03,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1073452829, now seen corresponding path program 41 times [2021-05-02 19:09:03,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:09:03,074 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48434486] [2021-05-02 19:09:03,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:09:03,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:09:03,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:09:03,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:09:03,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:09:03,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:09:03,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-05-02 19:09:03,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:09:04,152 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 484 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:09:04,153 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:09:04,153 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48434486] [2021-05-02 19:09:04,153 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48434486] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:09:04,153 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651343104] [2021-05-02 19:09:04,153 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:09:04,202 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-05-02 19:09:04,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:09:04,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 53 conjunts are in the unsatisfiable core [2021-05-02 19:09:04,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:09:04,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:04,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:04,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:04,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:04,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:04,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:04,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:04,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:04,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:04,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:04,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:04,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:04,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:04,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:04,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:04,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:04,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:04,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:04,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:04,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:04,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:04,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:04,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:04,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:04,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:04,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:04,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:04,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:04,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:04,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:04,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:04,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:05,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:06,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:06,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:06,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:06,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:06,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:06,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:06,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:06,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:06,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:06,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:06,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:06,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:06,216 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 484 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:09:06,216 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651343104] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:09:06,216 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:09:06,216 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 54] total 104 [2021-05-02 19:09:06,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704081227] [2021-05-02 19:09:06,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 104 states [2021-05-02 19:09:06,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:09:06,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2021-05-02 19:09:06,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1913, Invalid=8799, Unknown=0, NotChecked=0, Total=10712 [2021-05-02 19:09:06,218 INFO L87 Difference]: Start difference. First operand 126 states and 129 transitions. Second operand has 104 states, 104 states have (on average 1.9807692307692308) internal successors, (206), 103 states have internal predecessors, (206), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:09:09,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:09:09,399 INFO L93 Difference]: Finished difference Result 144 states and 151 transitions. [2021-05-02 19:09:09,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-02 19:09:09,400 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 1.9807692307692308) internal successors, (206), 103 states have internal predecessors, (206), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 117 [2021-05-02 19:09:09,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:09:09,400 INFO L225 Difference]: With dead ends: 144 [2021-05-02 19:09:09,400 INFO L226 Difference]: Without dead ends: 139 [2021-05-02 19:09:09,401 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 70 SyntacticMatches, 2 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10365 ImplicationChecksByTransitivity, 5215.9ms TimeCoverageRelationStatistics Valid=3956, Invalid=20850, Unknown=0, NotChecked=0, Total=24806 [2021-05-02 19:09:09,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-05-02 19:09:09,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 129. [2021-05-02 19:09:09,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 117 states have (on average 1.0427350427350428) internal successors, (122), 119 states have internal predecessors, (122), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:09:09,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 133 transitions. [2021-05-02 19:09:09,403 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 133 transitions. Word has length 117 [2021-05-02 19:09:09,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:09:09,403 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 133 transitions. [2021-05-02 19:09:09,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 104 states, 104 states have (on average 1.9807692307692308) internal successors, (206), 103 states have internal predecessors, (206), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:09:09,403 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 133 transitions. [2021-05-02 19:09:09,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-05-02 19:09:09,404 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:09:09,404 INFO L523 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:09:09,616 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2021-05-02 19:09:09,617 INFO L428 AbstractCegarLoop]: === Iteration 89 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:09:09,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:09:09,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1073059771, now seen corresponding path program 41 times [2021-05-02 19:09:09,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:09:09,617 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044157847] [2021-05-02 19:09:09,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:09:09,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:09:09,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:09:09,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:09:09,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:09:09,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:09:10,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-05-02 19:09:10,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:09:11,059 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 484 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:09:11,059 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:09:11,059 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044157847] [2021-05-02 19:09:11,059 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044157847] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:09:11,059 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943456486] [2021-05-02 19:09:11,059 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:09:11,113 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-05-02 19:09:11,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:09:11,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 53 conjunts are in the unsatisfiable core [2021-05-02 19:09:11,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:09:11,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:11,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:12,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:12,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:12,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:12,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:12,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:12,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:12,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:12,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:12,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:12,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:12,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:12,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:12,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:12,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:12,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:12,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:12,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:12,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:12,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:12,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:12,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:12,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:12,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:12,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:12,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:12,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:12,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:12,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:12,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:12,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:12,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:12,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:12,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:12,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:12,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:12,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:12,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:12,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:12,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:13,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:13,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:13,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:13,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:13,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:13,190 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 484 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:09:13,191 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943456486] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:09:13,191 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:09:13,191 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 54] total 104 [2021-05-02 19:09:13,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890328695] [2021-05-02 19:09:13,191 INFO L460 AbstractCegarLoop]: Interpolant automaton has 104 states [2021-05-02 19:09:13,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:09:13,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2021-05-02 19:09:13,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1913, Invalid=8799, Unknown=0, NotChecked=0, Total=10712 [2021-05-02 19:09:13,192 INFO L87 Difference]: Start difference. First operand 129 states and 133 transitions. Second operand has 104 states, 104 states have (on average 1.9807692307692308) internal successors, (206), 103 states have internal predecessors, (206), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:09:16,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:09:16,848 INFO L93 Difference]: Finished difference Result 139 states and 144 transitions. [2021-05-02 19:09:16,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-02 19:09:16,849 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 1.9807692307692308) internal successors, (206), 103 states have internal predecessors, (206), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 117 [2021-05-02 19:09:16,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:09:16,849 INFO L225 Difference]: With dead ends: 139 [2021-05-02 19:09:16,849 INFO L226 Difference]: Without dead ends: 136 [2021-05-02 19:09:16,850 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 70 SyntacticMatches, 2 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9883 ImplicationChecksByTransitivity, 5727.4ms TimeCoverageRelationStatistics Valid=3956, Invalid=20850, Unknown=0, NotChecked=0, Total=24806 [2021-05-02 19:09:16,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-05-02 19:09:16,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 132. [2021-05-02 19:09:16,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 120 states have (on average 1.05) internal successors, (126), 122 states have internal predecessors, (126), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:09:16,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 137 transitions. [2021-05-02 19:09:16,852 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 137 transitions. Word has length 117 [2021-05-02 19:09:16,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:09:16,852 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 137 transitions. [2021-05-02 19:09:16,852 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 104 states, 104 states have (on average 1.9807692307692308) internal successors, (206), 103 states have internal predecessors, (206), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:09:16,852 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 137 transitions. [2021-05-02 19:09:16,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-05-02 19:09:16,852 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:09:16,852 INFO L523 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:09:17,053 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2021-05-02 19:09:17,053 INFO L428 AbstractCegarLoop]: === Iteration 90 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:09:17,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:09:17,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1822272479, now seen corresponding path program 42 times [2021-05-02 19:09:17,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:09:17,053 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761991470] [2021-05-02 19:09:17,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:09:17,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:09:17,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:09:17,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:09:17,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:09:17,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:09:17,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-05-02 19:09:17,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:09:18,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 484 proven. 529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:09:18,204 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:09:18,204 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761991470] [2021-05-02 19:09:18,204 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761991470] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:09:18,204 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109324579] [2021-05-02 19:09:18,204 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:09:18,267 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 24 check-sat command(s) [2021-05-02 19:09:18,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:09:18,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 52 conjunts are in the unsatisfiable core [2021-05-02 19:09:18,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:09:18,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:18,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:18,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:18,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:18,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:18,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:18,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:18,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:18,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:18,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:18,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:18,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:18,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:18,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:18,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:18,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:18,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:18,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:18,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:18,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:18,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:18,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:18,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:18,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:18,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:18,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:18,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:18,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:18,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:18,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:19,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:20,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:20,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:20,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:20,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:20,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:20,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:20,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:20,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:20,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:20,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:20,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:20,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:20,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:20,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:20,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:20,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:20,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 484 proven. 529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:09:20,292 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109324579] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:09:20,293 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:09:20,293 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 53] total 104 [2021-05-02 19:09:20,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457851511] [2021-05-02 19:09:20,293 INFO L460 AbstractCegarLoop]: Interpolant automaton has 104 states [2021-05-02 19:09:20,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:09:20,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2021-05-02 19:09:20,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1915, Invalid=8797, Unknown=0, NotChecked=0, Total=10712 [2021-05-02 19:09:20,294 INFO L87 Difference]: Start difference. First operand 132 states and 137 transitions. Second operand has 104 states, 104 states have (on average 2.019230769230769) internal successors, (210), 103 states have internal predecessors, (210), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:09:23,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:09:23,671 INFO L93 Difference]: Finished difference Result 141 states and 146 transitions. [2021-05-02 19:09:23,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-02 19:09:23,672 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 2.019230769230769) internal successors, (210), 103 states have internal predecessors, (210), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 119 [2021-05-02 19:09:23,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:09:23,672 INFO L225 Difference]: With dead ends: 141 [2021-05-02 19:09:23,672 INFO L226 Difference]: Without dead ends: 135 [2021-05-02 19:09:23,673 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 73 SyntacticMatches, 2 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10240 ImplicationChecksByTransitivity, 5075.7ms TimeCoverageRelationStatistics Valid=3903, Invalid=19967, Unknown=0, NotChecked=0, Total=23870 [2021-05-02 19:09:23,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-05-02 19:09:23,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 131. [2021-05-02 19:09:23,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 119 states have (on average 1.0420168067226891) internal successors, (124), 121 states have internal predecessors, (124), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:09:23,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 135 transitions. [2021-05-02 19:09:23,675 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 135 transitions. Word has length 119 [2021-05-02 19:09:23,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:09:23,675 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 135 transitions. [2021-05-02 19:09:23,675 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 104 states, 104 states have (on average 2.019230769230769) internal successors, (210), 103 states have internal predecessors, (210), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:09:23,675 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 135 transitions. [2021-05-02 19:09:23,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-05-02 19:09:23,676 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:09:23,676 INFO L523 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:09:23,882 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:09:23,882 INFO L428 AbstractCegarLoop]: === Iteration 91 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:09:23,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:09:23,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1048648342, now seen corresponding path program 42 times [2021-05-02 19:09:23,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:09:23,882 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780858576] [2021-05-02 19:09:23,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:09:23,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:09:23,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:09:23,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:09:23,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:09:23,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:09:24,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-05-02 19:09:24,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:09:25,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 484 proven. 529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:09:25,409 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:09:25,409 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780858576] [2021-05-02 19:09:25,409 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780858576] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:09:25,409 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669250625] [2021-05-02 19:09:25,409 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:09:25,494 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 24 check-sat command(s) [2021-05-02 19:09:25,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:09:25,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 52 conjunts are in the unsatisfiable core [2021-05-02 19:09:25,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:09:25,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:25,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:25,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:25,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:25,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:25,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:25,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:25,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:25,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:25,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:25,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:25,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:25,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:25,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:25,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:25,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:25,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:25,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:25,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:25,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:25,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:25,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:25,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:25,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:25,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:25,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:25,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:25,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:25,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:25,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:25,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:25,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:26,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:26,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:26,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:26,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:26,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:26,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:26,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:26,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:26,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:26,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:26,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:26,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:26,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:26,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:26,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:26,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:26,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:26,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:26,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:26,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:26,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:26,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:26,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:26,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:26,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:26,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:26,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:26,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:26,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:26,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:26,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:26,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:26,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:26,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:26,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:26,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:26,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:26,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:26,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:26,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:26,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:26,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:26,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:26,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:26,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:26,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:27,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:27,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:27,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:27,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:27,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:27,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:27,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:27,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:27,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:27,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:27,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:27,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:27,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:27,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:27,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:27,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:27,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:27,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:27,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:27,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 484 proven. 529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:09:27,560 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669250625] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:09:27,560 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:09:27,560 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 53] total 104 [2021-05-02 19:09:27,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682370238] [2021-05-02 19:09:27,560 INFO L460 AbstractCegarLoop]: Interpolant automaton has 104 states [2021-05-02 19:09:27,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:09:27,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2021-05-02 19:09:27,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1915, Invalid=8797, Unknown=0, NotChecked=0, Total=10712 [2021-05-02 19:09:27,561 INFO L87 Difference]: Start difference. First operand 131 states and 135 transitions. Second operand has 104 states, 104 states have (on average 2.019230769230769) internal successors, (210), 103 states have internal predecessors, (210), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:09:30,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:09:30,548 INFO L93 Difference]: Finished difference Result 135 states and 138 transitions. [2021-05-02 19:09:30,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-02 19:09:30,549 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 2.019230769230769) internal successors, (210), 103 states have internal predecessors, (210), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 119 [2021-05-02 19:09:30,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:09:30,549 INFO L225 Difference]: With dead ends: 135 [2021-05-02 19:09:30,549 INFO L226 Difference]: Without dead ends: 131 [2021-05-02 19:09:30,550 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 73 SyntacticMatches, 2 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9597 ImplicationChecksByTransitivity, 5526.2ms TimeCoverageRelationStatistics Valid=3903, Invalid=19967, Unknown=0, NotChecked=0, Total=23870 [2021-05-02 19:09:30,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-05-02 19:09:30,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 130. [2021-05-02 19:09:30,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 118 states have (on average 1.0338983050847457) internal successors, (122), 120 states have internal predecessors, (122), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:09:30,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 133 transitions. [2021-05-02 19:09:30,552 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 133 transitions. Word has length 119 [2021-05-02 19:09:30,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:09:30,552 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 133 transitions. [2021-05-02 19:09:30,552 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 104 states, 104 states have (on average 2.019230769230769) internal successors, (210), 103 states have internal predecessors, (210), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:09:30,552 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 133 transitions. [2021-05-02 19:09:30,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-05-02 19:09:30,552 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:09:30,553 INFO L523 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:09:30,756 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable172 [2021-05-02 19:09:30,757 INFO L428 AbstractCegarLoop]: === Iteration 92 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:09:30,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:09:30,757 INFO L82 PathProgramCache]: Analyzing trace with hash 477644924, now seen corresponding path program 43 times [2021-05-02 19:09:30,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:09:30,757 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248204100] [2021-05-02 19:09:30,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:09:30,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:09:30,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:09:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:09:30,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:09:30,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:09:31,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-05-02 19:09:31,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:09:32,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 529 proven. 529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:09:32,002 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:09:32,002 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248204100] [2021-05-02 19:09:32,002 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248204100] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:09:32,003 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853426109] [2021-05-02 19:09:32,003 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:09:32,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:09:32,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 55 conjunts are in the unsatisfiable core [2021-05-02 19:09:32,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:09:32,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:32,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:32,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:32,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:32,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:32,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:32,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:32,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:32,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:32,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:32,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:32,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:32,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:32,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:32,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:32,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:32,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:32,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:32,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:32,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:32,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:32,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:32,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:32,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:32,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:32,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:32,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:32,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:32,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:32,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:32,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:32,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:32,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:32,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:32,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:32,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:33,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:33,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:33,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:33,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:33,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:33,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:33,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:33,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:33,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:33,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:33,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:33,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:33,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:33,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:33,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:33,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:33,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:33,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:33,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:33,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:33,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:33,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:33,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:33,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:33,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:33,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:33,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:33,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:33,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:33,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:33,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:33,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:33,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:33,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:33,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:33,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:33,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:33,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:33,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:33,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:33,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:33,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:33,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:33,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:33,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:33,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:33,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:33,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:34,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:34,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:34,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:34,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:34,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:34,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:34,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:34,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:34,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:34,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:34,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:34,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:34,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:34,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:34,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:34,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:34,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:34,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:34,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:34,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:34,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 529 proven. 529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:09:34,387 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853426109] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:09:34,387 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:09:34,387 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56] total 108 [2021-05-02 19:09:34,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201620750] [2021-05-02 19:09:34,387 INFO L460 AbstractCegarLoop]: Interpolant automaton has 108 states [2021-05-02 19:09:34,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:09:34,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2021-05-02 19:09:34,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2067, Invalid=9489, Unknown=0, NotChecked=0, Total=11556 [2021-05-02 19:09:34,388 INFO L87 Difference]: Start difference. First operand 130 states and 133 transitions. Second operand has 108 states, 108 states have (on average 1.9814814814814814) internal successors, (214), 107 states have internal predecessors, (214), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:09:39,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:09:39,065 INFO L93 Difference]: Finished difference Result 148 states and 155 transitions. [2021-05-02 19:09:39,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-05-02 19:09:39,066 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 1.9814814814814814) internal successors, (214), 107 states have internal predecessors, (214), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 121 [2021-05-02 19:09:39,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:09:39,066 INFO L225 Difference]: With dead ends: 148 [2021-05-02 19:09:39,066 INFO L226 Difference]: Without dead ends: 143 [2021-05-02 19:09:39,067 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 72 SyntacticMatches, 2 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11222 ImplicationChecksByTransitivity, 6009.0ms TimeCoverageRelationStatistics Valid=4268, Invalid=22464, Unknown=0, NotChecked=0, Total=26732 [2021-05-02 19:09:39,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-05-02 19:09:39,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 133. [2021-05-02 19:09:39,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 121 states have (on average 1.0413223140495869) internal successors, (126), 123 states have internal predecessors, (126), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:09:39,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 137 transitions. [2021-05-02 19:09:39,069 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 137 transitions. Word has length 121 [2021-05-02 19:09:39,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:09:39,069 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 137 transitions. [2021-05-02 19:09:39,069 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 108 states, 108 states have (on average 1.9814814814814814) internal successors, (214), 107 states have internal predecessors, (214), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:09:39,069 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 137 transitions. [2021-05-02 19:09:39,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-05-02 19:09:39,070 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:09:39,070 INFO L523 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:09:39,276 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,88 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:09:39,277 INFO L428 AbstractCegarLoop]: === Iteration 93 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:09:39,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:09:39,277 INFO L82 PathProgramCache]: Analyzing trace with hash 110419290, now seen corresponding path program 43 times [2021-05-02 19:09:39,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:09:39,277 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040493648] [2021-05-02 19:09:39,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:09:39,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:09:39,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:09:39,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:09:39,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:09:39,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:09:39,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-05-02 19:09:39,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:09:40,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 529 proven. 529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:09:40,950 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:09:40,950 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040493648] [2021-05-02 19:09:40,950 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040493648] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:09:40,950 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178782088] [2021-05-02 19:09:40,950 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:09:40,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:09:40,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 55 conjunts are in the unsatisfiable core [2021-05-02 19:09:40,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:09:41,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:41,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:42,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:42,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:42,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:42,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:42,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:42,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:42,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:42,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:42,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:42,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:42,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:42,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:42,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:42,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:42,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:42,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:42,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:42,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:42,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:42,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:42,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:42,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:42,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:42,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:42,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:42,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:42,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:42,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:42,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:42,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:42,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:42,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:42,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:42,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:43,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:43,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:43,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:43,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:43,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:43,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:43,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:43,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:43,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:43,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:43,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:43,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 529 proven. 529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:09:43,428 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178782088] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:09:43,428 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:09:43,428 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56] total 108 [2021-05-02 19:09:43,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109733447] [2021-05-02 19:09:43,428 INFO L460 AbstractCegarLoop]: Interpolant automaton has 108 states [2021-05-02 19:09:43,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:09:43,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2021-05-02 19:09:43,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2067, Invalid=9489, Unknown=0, NotChecked=0, Total=11556 [2021-05-02 19:09:43,430 INFO L87 Difference]: Start difference. First operand 133 states and 137 transitions. Second operand has 108 states, 108 states have (on average 1.9814814814814814) internal successors, (214), 107 states have internal predecessors, (214), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:09:47,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:09:47,406 INFO L93 Difference]: Finished difference Result 143 states and 148 transitions. [2021-05-02 19:09:47,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-05-02 19:09:47,408 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 1.9814814814814814) internal successors, (214), 107 states have internal predecessors, (214), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 121 [2021-05-02 19:09:47,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:09:47,409 INFO L225 Difference]: With dead ends: 143 [2021-05-02 19:09:47,409 INFO L226 Difference]: Without dead ends: 140 [2021-05-02 19:09:47,410 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 72 SyntacticMatches, 2 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10695 ImplicationChecksByTransitivity, 6718.0ms TimeCoverageRelationStatistics Valid=4268, Invalid=22464, Unknown=0, NotChecked=0, Total=26732 [2021-05-02 19:09:47,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-05-02 19:09:47,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 136. [2021-05-02 19:09:47,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 124 states have (on average 1.0483870967741935) internal successors, (130), 126 states have internal predecessors, (130), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:09:47,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 141 transitions. [2021-05-02 19:09:47,411 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 141 transitions. Word has length 121 [2021-05-02 19:09:47,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:09:47,411 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 141 transitions. [2021-05-02 19:09:47,412 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 108 states, 108 states have (on average 1.9814814814814814) internal successors, (214), 107 states have internal predecessors, (214), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:09:47,412 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 141 transitions. [2021-05-02 19:09:47,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-05-02 19:09:47,412 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:09:47,412 INFO L523 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:09:47,628 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:09:47,629 INFO L428 AbstractCegarLoop]: === Iteration 94 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:09:47,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:09:47,629 INFO L82 PathProgramCache]: Analyzing trace with hash 793161216, now seen corresponding path program 44 times [2021-05-02 19:09:47,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:09:47,629 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780509529] [2021-05-02 19:09:47,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:09:47,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:09:47,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:09:47,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:09:47,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:09:47,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:09:48,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-05-02 19:09:48,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:09:48,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 529 proven. 576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:09:48,990 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:09:48,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780509529] [2021-05-02 19:09:48,990 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780509529] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:09:48,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241788185] [2021-05-02 19:09:48,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:09:49,038 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 19:09:49,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:09:49,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 54 conjunts are in the unsatisfiable core [2021-05-02 19:09:49,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:09:49,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:49,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:49,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:49,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:49,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:49,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:49,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:49,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:49,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:49,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:49,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:49,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:49,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:49,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:49,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:49,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:49,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:49,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:49,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:49,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:49,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:49,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:49,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:49,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:49,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:49,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:49,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:49,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:49,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:49,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:49,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:49,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:50,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:50,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:50,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:50,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:50,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:50,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:50,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:50,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:50,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:50,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:50,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:50,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:50,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:50,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:50,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:50,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:50,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:50,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:50,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:50,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:50,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:50,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:50,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:50,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:50,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:50,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:50,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:50,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:50,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:50,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:50,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:50,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:50,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:50,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:50,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:50,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:50,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:50,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:50,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:50,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:50,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:50,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:50,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:50,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:50,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:50,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:50,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:50,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:51,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:51,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:51,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:51,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:51,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:51,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:51,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:51,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:51,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:51,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:51,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:51,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:51,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:51,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:51,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:51,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:51,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:51,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:51,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:51,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:51,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:51,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:51,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:51,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:51,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 529 proven. 576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:09:51,514 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241788185] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:09:51,514 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:09:51,514 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 55] total 108 [2021-05-02 19:09:51,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82086506] [2021-05-02 19:09:51,515 INFO L460 AbstractCegarLoop]: Interpolant automaton has 108 states [2021-05-02 19:09:51,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:09:51,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2021-05-02 19:09:51,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2069, Invalid=9487, Unknown=0, NotChecked=0, Total=11556 [2021-05-02 19:09:51,516 INFO L87 Difference]: Start difference. First operand 136 states and 141 transitions. Second operand has 108 states, 108 states have (on average 2.0185185185185186) internal successors, (218), 107 states have internal predecessors, (218), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:09:55,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:09:55,286 INFO L93 Difference]: Finished difference Result 145 states and 150 transitions. [2021-05-02 19:09:55,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-05-02 19:09:55,288 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 2.0185185185185186) internal successors, (218), 107 states have internal predecessors, (218), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 123 [2021-05-02 19:09:55,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:09:55,288 INFO L225 Difference]: With dead ends: 145 [2021-05-02 19:09:55,288 INFO L226 Difference]: Without dead ends: 139 [2021-05-02 19:09:55,289 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 75 SyntacticMatches, 2 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11092 ImplicationChecksByTransitivity, 5992.9ms TimeCoverageRelationStatistics Valid=4214, Invalid=21546, Unknown=0, NotChecked=0, Total=25760 [2021-05-02 19:09:55,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-05-02 19:09:55,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 135. [2021-05-02 19:09:55,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 123 states have (on average 1.0406504065040652) internal successors, (128), 125 states have internal predecessors, (128), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:09:55,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 139 transitions. [2021-05-02 19:09:55,291 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 139 transitions. Word has length 123 [2021-05-02 19:09:55,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:09:55,291 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 139 transitions. [2021-05-02 19:09:55,291 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 108 states, 108 states have (on average 2.0185185185185186) internal successors, (218), 107 states have internal predecessors, (218), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:09:55,291 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 139 transitions. [2021-05-02 19:09:55,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-05-02 19:09:55,292 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:09:55,292 INFO L523 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:09:55,504 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:09:55,505 INFO L428 AbstractCegarLoop]: === Iteration 95 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:09:55,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:09:55,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1926404235, now seen corresponding path program 44 times [2021-05-02 19:09:55,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:09:55,505 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734926827] [2021-05-02 19:09:55,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:09:55,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:09:55,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:09:55,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:09:55,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:09:55,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:09:56,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-05-02 19:09:56,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:09:57,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 529 proven. 576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:09:57,295 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:09:57,295 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734926827] [2021-05-02 19:09:57,295 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734926827] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:09:57,295 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097370367] [2021-05-02 19:09:57,295 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:09:57,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 19:09:57,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:09:57,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 54 conjunts are in the unsatisfiable core [2021-05-02 19:09:57,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:09:57,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:57,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:57,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:57,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:57,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:57,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:57,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:57,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:57,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:57,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:57,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:57,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:57,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:57,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:57,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:57,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:57,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:57,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:57,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:57,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:57,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:57,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:57,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:57,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:57,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:57,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:57,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:57,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:57,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:57,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:57,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:57,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:57,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:57,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:58,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:58,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:58,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:58,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:58,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:58,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:58,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:58,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:58,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:58,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:58,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:58,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:58,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:58,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:58,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:58,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:58,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:58,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:58,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:58,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:58,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:58,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:58,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:58,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:58,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:58,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:58,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:58,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:58,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:58,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:58,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:58,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:58,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:58,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:58,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:58,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:58,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:58,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:58,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:58,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:58,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:58,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:59,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:59,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:59,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:59,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:59,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:59,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:59,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:59,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:59,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:59,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:59,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:59,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:59,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:59,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:59,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:59,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:59,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:59,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:59,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:59,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:59,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:59,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:59,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:59,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:59,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:09:59,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 529 proven. 576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:09:59,852 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097370367] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:09:59,852 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:09:59,852 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 55] total 108 [2021-05-02 19:09:59,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009661936] [2021-05-02 19:09:59,852 INFO L460 AbstractCegarLoop]: Interpolant automaton has 108 states [2021-05-02 19:09:59,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:09:59,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2021-05-02 19:09:59,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2069, Invalid=9487, Unknown=0, NotChecked=0, Total=11556 [2021-05-02 19:09:59,853 INFO L87 Difference]: Start difference. First operand 135 states and 139 transitions. Second operand has 108 states, 108 states have (on average 2.0185185185185186) internal successors, (218), 107 states have internal predecessors, (218), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:10:03,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:10:03,383 INFO L93 Difference]: Finished difference Result 139 states and 142 transitions. [2021-05-02 19:10:03,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-05-02 19:10:03,385 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 2.0185185185185186) internal successors, (218), 107 states have internal predecessors, (218), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 123 [2021-05-02 19:10:03,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:10:03,385 INFO L225 Difference]: With dead ends: 139 [2021-05-02 19:10:03,385 INFO L226 Difference]: Without dead ends: 135 [2021-05-02 19:10:03,386 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 75 SyntacticMatches, 2 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10397 ImplicationChecksByTransitivity, 6553.1ms TimeCoverageRelationStatistics Valid=4214, Invalid=21546, Unknown=0, NotChecked=0, Total=25760 [2021-05-02 19:10:03,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-05-02 19:10:03,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 134. [2021-05-02 19:10:03,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 122 states have (on average 1.0327868852459017) internal successors, (126), 124 states have internal predecessors, (126), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:10:03,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 137 transitions. [2021-05-02 19:10:03,388 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 137 transitions. Word has length 123 [2021-05-02 19:10:03,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:10:03,388 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 137 transitions. [2021-05-02 19:10:03,388 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 108 states, 108 states have (on average 2.0185185185185186) internal successors, (218), 107 states have internal predecessors, (218), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:10:03,388 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 137 transitions. [2021-05-02 19:10:03,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-05-02 19:10:03,388 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:10:03,388 INFO L523 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:10:03,589 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:10:03,589 INFO L428 AbstractCegarLoop]: === Iteration 96 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:10:03,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:10:03,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1900337563, now seen corresponding path program 45 times [2021-05-02 19:10:03,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:10:03,589 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516538264] [2021-05-02 19:10:03,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:10:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:03,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:10:03,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:03,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:10:03,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:04,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-05-02 19:10:04,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:05,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 576 proven. 576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:10:05,117 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:10:05,117 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516538264] [2021-05-02 19:10:05,117 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516538264] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:10:05,117 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203741884] [2021-05-02 19:10:05,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:10:05,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 25 check-sat command(s) [2021-05-02 19:10:05,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:10:05,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 57 conjunts are in the unsatisfiable core [2021-05-02 19:10:05,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:10:05,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:05,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:05,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:05,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:05,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:05,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:05,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:05,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:05,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:05,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:05,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:05,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:05,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:05,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:05,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:05,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:05,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:05,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:05,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:05,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:05,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:05,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:05,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:05,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:05,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:05,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:06,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:06,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:06,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:06,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:06,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:06,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:06,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:06,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:06,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:06,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:06,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:06,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:06,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:06,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:06,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:06,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:06,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:06,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:06,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:06,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:06,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:06,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:06,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:06,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:06,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:06,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:06,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:06,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:06,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:06,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:06,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:06,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:06,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:07,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 576 proven. 576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:10:07,993 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203741884] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:10:07,993 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:10:07,993 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 58] total 112 [2021-05-02 19:10:07,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874864120] [2021-05-02 19:10:07,993 INFO L460 AbstractCegarLoop]: Interpolant automaton has 112 states [2021-05-02 19:10:07,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:10:07,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2021-05-02 19:10:07,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2227, Invalid=10205, Unknown=0, NotChecked=0, Total=12432 [2021-05-02 19:10:07,995 INFO L87 Difference]: Start difference. First operand 134 states and 137 transitions. Second operand has 112 states, 112 states have (on average 1.9821428571428572) internal successors, (222), 111 states have internal predecessors, (222), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:10:11,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:10:11,879 INFO L93 Difference]: Finished difference Result 152 states and 159 transitions. [2021-05-02 19:10:11,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-05-02 19:10:11,880 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 112 states have (on average 1.9821428571428572) internal successors, (222), 111 states have internal predecessors, (222), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 125 [2021-05-02 19:10:11,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:10:11,880 INFO L225 Difference]: With dead ends: 152 [2021-05-02 19:10:11,880 INFO L226 Difference]: Without dead ends: 147 [2021-05-02 19:10:11,882 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 74 SyntacticMatches, 2 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12113 ImplicationChecksByTransitivity, 6979.9ms TimeCoverageRelationStatistics Valid=4592, Invalid=24138, Unknown=0, NotChecked=0, Total=28730 [2021-05-02 19:10:11,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-05-02 19:10:11,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 137. [2021-05-02 19:10:11,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 125 states have (on average 1.04) internal successors, (130), 127 states have internal predecessors, (130), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:10:11,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 141 transitions. [2021-05-02 19:10:11,883 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 141 transitions. Word has length 125 [2021-05-02 19:10:11,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:10:11,883 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 141 transitions. [2021-05-02 19:10:11,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 112 states, 112 states have (on average 1.9821428571428572) internal successors, (222), 111 states have internal predecessors, (222), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:10:11,883 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 141 transitions. [2021-05-02 19:10:11,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-05-02 19:10:11,884 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:10:11,884 INFO L523 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:10:12,096 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable182 [2021-05-02 19:10:12,097 INFO L428 AbstractCegarLoop]: === Iteration 97 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:10:12,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:10:12,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1194324665, now seen corresponding path program 45 times [2021-05-02 19:10:12,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:10:12,097 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219659025] [2021-05-02 19:10:12,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:10:12,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:12,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:10:12,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:12,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:10:12,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:12,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-05-02 19:10:12,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:14,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 576 proven. 576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:10:14,066 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:10:14,066 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219659025] [2021-05-02 19:10:14,067 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219659025] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:10:14,067 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407332433] [2021-05-02 19:10:14,067 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:10:14,131 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 25 check-sat command(s) [2021-05-02 19:10:14,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:10:14,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 57 conjunts are in the unsatisfiable core [2021-05-02 19:10:14,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:10:14,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:14,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:14,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:14,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:14,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:14,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:14,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:14,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:14,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:14,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:14,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:14,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:14,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:14,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:14,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:14,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:14,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:14,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:14,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:14,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:14,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:14,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:14,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:14,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:14,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:14,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:14,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:14,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:14,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:14,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:14,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:14,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:14,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:14,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:14,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:14,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:14,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:14,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:14,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:14,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:14,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:14,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:15,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:15,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:15,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:15,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:15,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:15,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:15,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:15,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:15,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:15,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:15,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:15,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:15,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:15,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:15,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:15,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:15,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:15,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:15,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:15,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:15,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:15,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:15,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:15,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:15,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:15,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:15,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:15,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:15,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:15,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:15,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:15,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:15,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:15,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:15,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:15,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:15,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:15,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:15,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:15,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:16,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:16,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:16,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:16,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:16,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:16,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:16,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:16,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:16,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:16,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:16,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:16,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:16,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:16,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:16,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:16,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:16,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:16,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:16,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:16,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:16,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:16,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:16,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:16,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 576 proven. 576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:10:16,965 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407332433] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:10:16,965 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:10:16,965 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 58] total 112 [2021-05-02 19:10:16,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703885817] [2021-05-02 19:10:16,965 INFO L460 AbstractCegarLoop]: Interpolant automaton has 112 states [2021-05-02 19:10:16,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:10:16,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2021-05-02 19:10:16,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2227, Invalid=10205, Unknown=0, NotChecked=0, Total=12432 [2021-05-02 19:10:16,966 INFO L87 Difference]: Start difference. First operand 137 states and 141 transitions. Second operand has 112 states, 112 states have (on average 1.9821428571428572) internal successors, (222), 111 states have internal predecessors, (222), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:10:21,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:10:21,921 INFO L93 Difference]: Finished difference Result 147 states and 152 transitions. [2021-05-02 19:10:21,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-05-02 19:10:21,923 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 112 states have (on average 1.9821428571428572) internal successors, (222), 111 states have internal predecessors, (222), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 125 [2021-05-02 19:10:21,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:10:21,923 INFO L225 Difference]: With dead ends: 147 [2021-05-02 19:10:21,923 INFO L226 Difference]: Without dead ends: 144 [2021-05-02 19:10:21,924 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 74 SyntacticMatches, 2 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11539 ImplicationChecksByTransitivity, 7542.2ms TimeCoverageRelationStatistics Valid=4592, Invalid=24138, Unknown=0, NotChecked=0, Total=28730 [2021-05-02 19:10:21,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-05-02 19:10:21,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 140. [2021-05-02 19:10:21,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 128 states have (on average 1.046875) internal successors, (134), 130 states have internal predecessors, (134), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:10:21,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 145 transitions. [2021-05-02 19:10:21,926 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 145 transitions. Word has length 125 [2021-05-02 19:10:21,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:10:21,926 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 145 transitions. [2021-05-02 19:10:21,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 112 states, 112 states have (on average 1.9821428571428572) internal successors, (222), 111 states have internal predecessors, (222), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:10:21,926 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 145 transitions. [2021-05-02 19:10:21,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-05-02 19:10:21,926 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:10:21,927 INFO L523 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:10:22,127 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:10:22,127 INFO L428 AbstractCegarLoop]: === Iteration 98 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:10:22,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:10:22,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1250826337, now seen corresponding path program 46 times [2021-05-02 19:10:22,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:10:22,128 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132609085] [2021-05-02 19:10:22,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:10:22,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:22,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:10:22,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:22,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:10:22,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:22,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-05-02 19:10:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:23,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1201 backedges. 576 proven. 625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:10:23,695 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:10:23,695 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132609085] [2021-05-02 19:10:23,695 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132609085] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:10:23,695 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750510952] [2021-05-02 19:10:23,695 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:10:23,742 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 19:10:23,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:10:23,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 56 conjunts are in the unsatisfiable core [2021-05-02 19:10:23,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:10:23,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:23,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:23,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:23,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:23,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:23,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:23,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:23,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:24,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:24,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:24,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:24,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:24,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:24,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:24,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:24,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:24,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:24,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:24,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:24,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:24,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:24,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:24,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:24,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:24,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:24,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:24,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:24,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:24,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:24,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:24,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:24,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:24,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:24,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:24,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:24,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:24,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:24,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:25,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:25,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:25,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:25,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:25,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:25,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:25,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:25,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:25,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:25,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:25,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:25,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:25,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:25,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:25,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:25,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:25,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:25,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:25,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:25,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:25,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:25,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:25,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:25,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:25,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:25,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:25,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:25,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:25,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:25,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:25,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:25,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:25,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:25,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:25,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:25,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:25,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:25,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:25,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:25,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:25,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:25,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:25,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:25,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:26,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:26,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:26,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:26,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:26,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:26,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:26,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:26,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:26,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:26,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:26,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:26,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:26,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:26,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:26,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:26,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:26,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:26,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:26,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:26,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:26,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:26,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:26,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:26,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:26,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:26,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:26,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1201 backedges. 576 proven. 625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:10:26,657 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750510952] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:10:26,657 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:10:26,658 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 57] total 112 [2021-05-02 19:10:26,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147036368] [2021-05-02 19:10:26,658 INFO L460 AbstractCegarLoop]: Interpolant automaton has 112 states [2021-05-02 19:10:26,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:10:26,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2021-05-02 19:10:26,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2229, Invalid=10203, Unknown=0, NotChecked=0, Total=12432 [2021-05-02 19:10:26,659 INFO L87 Difference]: Start difference. First operand 140 states and 145 transitions. Second operand has 112 states, 112 states have (on average 2.017857142857143) internal successors, (226), 111 states have internal predecessors, (226), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:10:31,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:10:31,994 INFO L93 Difference]: Finished difference Result 149 states and 154 transitions. [2021-05-02 19:10:31,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-05-02 19:10:31,996 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 112 states have (on average 2.017857142857143) internal successors, (226), 111 states have internal predecessors, (226), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 127 [2021-05-02 19:10:31,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:10:31,996 INFO L225 Difference]: With dead ends: 149 [2021-05-02 19:10:31,996 INFO L226 Difference]: Without dead ends: 143 [2021-05-02 19:10:31,997 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 77 SyntacticMatches, 2 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11978 ImplicationChecksByTransitivity, 7022.6ms TimeCoverageRelationStatistics Valid=4537, Invalid=23185, Unknown=0, NotChecked=0, Total=27722 [2021-05-02 19:10:31,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-05-02 19:10:31,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 139. [2021-05-02 19:10:31,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 127 states have (on average 1.0393700787401574) internal successors, (132), 129 states have internal predecessors, (132), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:10:31,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 143 transitions. [2021-05-02 19:10:31,999 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 143 transitions. Word has length 127 [2021-05-02 19:10:31,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:10:31,999 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 143 transitions. [2021-05-02 19:10:31,999 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 112 states, 112 states have (on average 2.017857142857143) internal successors, (226), 111 states have internal predecessors, (226), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:10:31,999 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 143 transitions. [2021-05-02 19:10:32,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-05-02 19:10:32,000 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:10:32,000 INFO L523 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:10:32,200 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186,94 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:10:32,200 INFO L428 AbstractCegarLoop]: === Iteration 99 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:10:32,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:10:32,201 INFO L82 PathProgramCache]: Analyzing trace with hash 871355412, now seen corresponding path program 46 times [2021-05-02 19:10:32,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:10:32,201 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777606865] [2021-05-02 19:10:32,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:10:32,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:32,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:10:32,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:32,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:10:32,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:32,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-05-02 19:10:32,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:34,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1201 backedges. 576 proven. 625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:10:34,314 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:10:34,314 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777606865] [2021-05-02 19:10:34,314 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777606865] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:10:34,314 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858552715] [2021-05-02 19:10:34,314 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:10:34,362 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 19:10:34,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:10:34,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 56 conjunts are in the unsatisfiable core [2021-05-02 19:10:34,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:10:34,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:34,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:34,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:34,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:34,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:34,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:34,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:34,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:34,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:34,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:34,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:34,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:34,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:34,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:34,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:34,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:34,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:34,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:34,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:34,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:34,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:34,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:34,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:34,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:34,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:34,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:34,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:34,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:34,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:34,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:34,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:34,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:35,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:35,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:35,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:35,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:35,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:35,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:35,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:35,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:35,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:35,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:35,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:35,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:35,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:35,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:35,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:35,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:35,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:35,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:35,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:35,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:35,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:35,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:35,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:35,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:35,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:35,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:35,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:35,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:35,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:35,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:35,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:35,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:35,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:35,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:35,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:35,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:35,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:35,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:35,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:35,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:36,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:36,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:36,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:36,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:36,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:36,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:36,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:36,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:36,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:36,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:36,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:36,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:36,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:36,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:36,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:36,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:36,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:36,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:36,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:36,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:36,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:36,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:36,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:36,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:36,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:36,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:36,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:36,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:37,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:37,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:37,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:37,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:37,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:37,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1201 backedges. 576 proven. 625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:10:37,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858552715] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:10:37,125 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:10:37,125 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 57] total 112 [2021-05-02 19:10:37,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811732285] [2021-05-02 19:10:37,125 INFO L460 AbstractCegarLoop]: Interpolant automaton has 112 states [2021-05-02 19:10:37,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:10:37,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2021-05-02 19:10:37,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2229, Invalid=10203, Unknown=0, NotChecked=0, Total=12432 [2021-05-02 19:10:37,126 INFO L87 Difference]: Start difference. First operand 139 states and 143 transitions. Second operand has 112 states, 112 states have (on average 2.017857142857143) internal successors, (226), 111 states have internal predecessors, (226), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:10:41,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:10:41,322 INFO L93 Difference]: Finished difference Result 143 states and 146 transitions. [2021-05-02 19:10:41,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-05-02 19:10:41,323 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 112 states have (on average 2.017857142857143) internal successors, (226), 111 states have internal predecessors, (226), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 127 [2021-05-02 19:10:41,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:10:41,323 INFO L225 Difference]: With dead ends: 143 [2021-05-02 19:10:41,323 INFO L226 Difference]: Without dead ends: 139 [2021-05-02 19:10:41,324 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 77 SyntacticMatches, 2 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11229 ImplicationChecksByTransitivity, 7188.5ms TimeCoverageRelationStatistics Valid=4537, Invalid=23185, Unknown=0, NotChecked=0, Total=27722 [2021-05-02 19:10:41,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-05-02 19:10:41,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 138. [2021-05-02 19:10:41,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 126 states have (on average 1.0317460317460319) internal successors, (130), 128 states have internal predecessors, (130), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:10:41,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 141 transitions. [2021-05-02 19:10:41,326 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 141 transitions. Word has length 127 [2021-05-02 19:10:41,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:10:41,326 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 141 transitions. [2021-05-02 19:10:41,326 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 112 states, 112 states have (on average 2.017857142857143) internal successors, (226), 111 states have internal predecessors, (226), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:10:41,326 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 141 transitions. [2021-05-02 19:10:41,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-05-02 19:10:41,326 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:10:41,327 INFO L523 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:10:41,527 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:10:41,528 INFO L428 AbstractCegarLoop]: === Iteration 100 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:10:41,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:10:41,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1897831034, now seen corresponding path program 47 times [2021-05-02 19:10:41,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:10:41,528 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888667280] [2021-05-02 19:10:41,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:10:41,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:41,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:10:41,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:41,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:10:41,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:42,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-05-02 19:10:42,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:43,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1250 backedges. 625 proven. 625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:10:43,267 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:10:43,267 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888667280] [2021-05-02 19:10:43,267 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888667280] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:10:43,267 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676184744] [2021-05-02 19:10:43,267 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:10:43,319 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2021-05-02 19:10:43,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:10:43,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 59 conjunts are in the unsatisfiable core [2021-05-02 19:10:43,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:10:43,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:43,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:43,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:43,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:43,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:43,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:43,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:43,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:43,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:43,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:43,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:43,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:43,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:43,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:43,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:43,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:43,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:43,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:43,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:43,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:44,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:44,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:44,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:44,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:44,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:44,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:44,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:44,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:44,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:44,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:44,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:44,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:44,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:44,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:44,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:44,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:44,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:44,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:44,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:44,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:44,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:44,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:45,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:45,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:45,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:45,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:45,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:45,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:45,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:45,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:45,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:45,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:45,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:45,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:45,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:45,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:45,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:45,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:45,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:45,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:45,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:45,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:45,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:45,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:45,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:45,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:45,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:45,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:45,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:45,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:45,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:45,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:45,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:45,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:45,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:45,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:45,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:45,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:45,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:45,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:45,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:45,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:45,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:45,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:45,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:45,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:46,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:46,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:46,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:46,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:46,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:46,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:46,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:46,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:46,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:46,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:46,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:46,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:46,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:46,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:46,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:46,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:46,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:46,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:46,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:46,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:46,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:46,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:46,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:46,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:46,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:46,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:46,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1250 backedges. 625 proven. 625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:10:46,663 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676184744] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:10:46,664 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:10:46,664 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 60] total 116 [2021-05-02 19:10:46,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342462650] [2021-05-02 19:10:46,664 INFO L460 AbstractCegarLoop]: Interpolant automaton has 116 states [2021-05-02 19:10:46,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:10:46,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2021-05-02 19:10:46,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2393, Invalid=10947, Unknown=0, NotChecked=0, Total=13340 [2021-05-02 19:10:46,671 INFO L87 Difference]: Start difference. First operand 138 states and 141 transitions. Second operand has 116 states, 116 states have (on average 1.9827586206896552) internal successors, (230), 115 states have internal predecessors, (230), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:10:53,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:10:53,429 INFO L93 Difference]: Finished difference Result 156 states and 163 transitions. [2021-05-02 19:10:53,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-02 19:10:53,431 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 116 states have (on average 1.9827586206896552) internal successors, (230), 115 states have internal predecessors, (230), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 129 [2021-05-02 19:10:53,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:10:53,431 INFO L225 Difference]: With dead ends: 156 [2021-05-02 19:10:53,431 INFO L226 Difference]: Without dead ends: 151 [2021-05-02 19:10:53,433 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 76 SyntacticMatches, 2 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13038 ImplicationChecksByTransitivity, 8690.4ms TimeCoverageRelationStatistics Valid=4928, Invalid=25872, Unknown=0, NotChecked=0, Total=30800 [2021-05-02 19:10:53,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-05-02 19:10:53,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 141. [2021-05-02 19:10:53,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 129 states have (on average 1.0387596899224807) internal successors, (134), 131 states have internal predecessors, (134), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:10:53,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 145 transitions. [2021-05-02 19:10:53,434 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 145 transitions. Word has length 129 [2021-05-02 19:10:53,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:10:53,434 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 145 transitions. [2021-05-02 19:10:53,435 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 116 states, 116 states have (on average 1.9827586206896552) internal successors, (230), 115 states have internal predecessors, (230), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:10:53,435 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 145 transitions. [2021-05-02 19:10:53,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-05-02 19:10:53,435 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:10:53,435 INFO L523 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:10:53,635 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable190 [2021-05-02 19:10:53,636 INFO L428 AbstractCegarLoop]: === Iteration 101 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:10:53,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:10:53,636 INFO L82 PathProgramCache]: Analyzing trace with hash 2034771928, now seen corresponding path program 47 times [2021-05-02 19:10:53,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:10:53,636 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477189919] [2021-05-02 19:10:53,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:10:53,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:53,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:10:53,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:53,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:10:53,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:54,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-05-02 19:10:54,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:56,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1250 backedges. 625 proven. 625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:10:56,621 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:10:56,622 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477189919] [2021-05-02 19:10:56,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477189919] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:10:56,622 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309180535] [2021-05-02 19:10:56,622 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:10:56,673 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2021-05-02 19:10:56,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:10:56,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 59 conjunts are in the unsatisfiable core [2021-05-02 19:10:56,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:10:56,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:56,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:56,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:56,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:56,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:56,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:56,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:56,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:56,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:56,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:56,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:56,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:57,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:57,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:57,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:57,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:57,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:57,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:57,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:57,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:57,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:57,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:57,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:57,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:57,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:57,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:57,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:57,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:57,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:57,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:57,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:57,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:57,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:57,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:57,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:57,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:57,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:57,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:57,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:57,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:57,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:57,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:57,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:57,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:57,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:57,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:57,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:57,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:58,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:58,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:58,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:58,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:58,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:58,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:58,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:58,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:58,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:58,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:58,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:58,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:58,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:58,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:58,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:58,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:58,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:58,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:58,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:58,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:58,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:58,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:58,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:58,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:58,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:58,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:58,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:58,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:58,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:58,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:59,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:59,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:59,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:59,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:59,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:59,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:59,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:59,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:59,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:59,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:59,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:59,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:59,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:59,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:59,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:59,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:59,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:59,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:59,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:59,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:00,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:00,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:00,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:00,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:00,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:00,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:00,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:00,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:00,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:00,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:00,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:00,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1250 backedges. 625 proven. 625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:11:00,637 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309180535] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:11:00,637 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:11:00,637 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 60] total 116 [2021-05-02 19:11:00,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654301596] [2021-05-02 19:11:00,637 INFO L460 AbstractCegarLoop]: Interpolant automaton has 116 states [2021-05-02 19:11:00,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:11:00,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2021-05-02 19:11:00,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2393, Invalid=10947, Unknown=0, NotChecked=0, Total=13340 [2021-05-02 19:11:00,638 INFO L87 Difference]: Start difference. First operand 141 states and 145 transitions. Second operand has 116 states, 116 states have (on average 1.9827586206896552) internal successors, (230), 115 states have internal predecessors, (230), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:11:06,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:11:06,985 INFO L93 Difference]: Finished difference Result 151 states and 156 transitions. [2021-05-02 19:11:06,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-02 19:11:06,987 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 116 states have (on average 1.9827586206896552) internal successors, (230), 115 states have internal predecessors, (230), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 129 [2021-05-02 19:11:06,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:11:06,988 INFO L225 Difference]: With dead ends: 151 [2021-05-02 19:11:06,988 INFO L226 Difference]: Without dead ends: 148 [2021-05-02 19:11:06,989 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 76 SyntacticMatches, 2 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12415 ImplicationChecksByTransitivity, 10587.0ms TimeCoverageRelationStatistics Valid=4928, Invalid=25872, Unknown=0, NotChecked=0, Total=30800 [2021-05-02 19:11:06,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-05-02 19:11:06,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2021-05-02 19:11:06,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 132 states have (on average 1.0454545454545454) internal successors, (138), 134 states have internal predecessors, (138), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:11:06,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 149 transitions. [2021-05-02 19:11:06,991 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 149 transitions. Word has length 129 [2021-05-02 19:11:06,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:11:06,991 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 149 transitions. [2021-05-02 19:11:06,991 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 116 states, 116 states have (on average 1.9827586206896552) internal successors, (230), 115 states have internal predecessors, (230), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:11:06,991 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 149 transitions. [2021-05-02 19:11:06,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-05-02 19:11:06,991 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:11:06,991 INFO L523 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:11:07,204 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable192 [2021-05-02 19:11:07,205 INFO L428 AbstractCegarLoop]: === Iteration 102 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:11:07,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:11:07,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1034858242, now seen corresponding path program 48 times [2021-05-02 19:11:07,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:11:07,205 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242502922] [2021-05-02 19:11:07,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:11:07,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:11:07,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:11:07,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:11:07,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:11:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:11:08,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-05-02 19:11:08,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:11:09,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1301 backedges. 625 proven. 676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:11:09,182 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:11:09,182 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242502922] [2021-05-02 19:11:09,182 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242502922] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:11:09,182 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707581103] [2021-05-02 19:11:09,182 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:11:09,246 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2021-05-02 19:11:09,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:11:09,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 58 conjunts are in the unsatisfiable core [2021-05-02 19:11:09,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:11:09,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:09,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:09,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:09,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:09,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:09,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:09,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:09,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:09,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:09,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:09,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:09,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:09,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:09,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:09,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:09,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:09,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:09,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:10,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:10,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:10,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:10,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:10,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:10,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:10,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:10,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:10,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:10,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:10,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:10,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:10,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:10,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:10,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:10,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:10,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:10,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:10,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:10,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:10,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:10,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:11,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:11,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:11,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:11,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:11,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:11,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:11,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:11,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:11,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:11,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:11,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:11,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:11,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:11,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:11,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:11,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:11,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:11,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:11,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:11,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:11,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:11,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:11,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:11,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:11,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:11,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:11,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:11,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:11,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:11,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:11,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:11,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:11,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:11,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:11,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:11,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:11,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:11,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:12,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:12,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:12,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:12,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:12,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:12,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:12,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:12,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:12,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:12,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:12,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:12,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:12,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:12,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:12,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:12,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:12,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:12,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:12,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:12,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:12,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:12,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:12,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:12,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:12,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:12,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:12,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:12,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:12,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:12,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:12,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:12,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:12,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:12,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:12,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1301 backedges. 625 proven. 676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:11:12,881 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707581103] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:11:12,881 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:11:12,882 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 59] total 116 [2021-05-02 19:11:12,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195708305] [2021-05-02 19:11:12,882 INFO L460 AbstractCegarLoop]: Interpolant automaton has 116 states [2021-05-02 19:11:12,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:11:12,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2021-05-02 19:11:12,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2395, Invalid=10945, Unknown=0, NotChecked=0, Total=13340 [2021-05-02 19:11:12,883 INFO L87 Difference]: Start difference. First operand 144 states and 149 transitions. Second operand has 116 states, 116 states have (on average 2.0172413793103448) internal successors, (234), 115 states have internal predecessors, (234), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:11:19,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:11:19,530 INFO L93 Difference]: Finished difference Result 153 states and 158 transitions. [2021-05-02 19:11:19,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-05-02 19:11:19,532 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 116 states have (on average 2.0172413793103448) internal successors, (234), 115 states have internal predecessors, (234), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 131 [2021-05-02 19:11:19,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:11:19,533 INFO L225 Difference]: With dead ends: 153 [2021-05-02 19:11:19,533 INFO L226 Difference]: Without dead ends: 147 [2021-05-02 19:11:19,534 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 79 SyntacticMatches, 2 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12898 ImplicationChecksByTransitivity, 8794.8ms TimeCoverageRelationStatistics Valid=4872, Invalid=24884, Unknown=0, NotChecked=0, Total=29756 [2021-05-02 19:11:19,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-05-02 19:11:19,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 143. [2021-05-02 19:11:19,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 131 states have (on average 1.0381679389312977) internal successors, (136), 133 states have internal predecessors, (136), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:11:19,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 147 transitions. [2021-05-02 19:11:19,535 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 147 transitions. Word has length 131 [2021-05-02 19:11:19,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:11:19,535 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 147 transitions. [2021-05-02 19:11:19,535 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 116 states, 116 states have (on average 2.0172413793103448) internal successors, (234), 115 states have internal predecessors, (234), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:11:19,536 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 147 transitions. [2021-05-02 19:11:19,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-05-02 19:11:19,536 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:11:19,536 INFO L523 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:11:19,748 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194,98 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:11:19,749 INFO L428 AbstractCegarLoop]: === Iteration 103 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:11:19,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:11:19,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1738166157, now seen corresponding path program 48 times [2021-05-02 19:11:19,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:11:19,749 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221548422] [2021-05-02 19:11:19,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:11:19,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:11:19,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:11:19,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:11:19,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:11:19,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:11:20,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-05-02 19:11:20,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:11:22,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1301 backedges. 625 proven. 676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:11:22,777 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:11:22,777 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221548422] [2021-05-02 19:11:22,777 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221548422] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:11:22,777 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360519548] [2021-05-02 19:11:22,777 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:11:22,845 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2021-05-02 19:11:22,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:11:22,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 58 conjunts are in the unsatisfiable core [2021-05-02 19:11:22,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:11:22,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:22,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:22,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:22,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:23,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:23,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:23,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:23,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:23,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:23,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:23,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:23,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:23,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:23,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:23,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:23,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:23,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:23,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:23,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:23,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:23,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:23,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:23,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:23,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:23,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:23,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:23,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:23,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:23,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:23,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:23,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:23,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:23,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:23,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:23,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:23,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:23,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:23,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:24,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:24,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:24,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:24,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:24,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:24,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:24,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:24,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:24,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:24,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:24,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:24,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:24,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:24,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:24,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:24,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:24,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:24,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:24,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:24,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:24,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:24,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:24,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:24,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:24,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:24,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:24,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:24,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:25,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:25,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:25,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:25,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:25,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:25,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:25,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:25,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:25,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:25,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:25,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:25,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:25,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:25,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:25,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:25,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:25,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:25,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:25,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:25,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:25,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:25,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:26,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:26,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:26,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:26,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:26,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:26,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:26,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:26,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:26,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:26,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:26,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:26,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:26,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:26,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:26,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:26,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:26,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:26,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:27,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:27,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:27,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:27,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1301 backedges. 625 proven. 676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:11:27,140 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360519548] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:11:27,140 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:11:27,140 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 59] total 116 [2021-05-02 19:11:27,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518859964] [2021-05-02 19:11:27,140 INFO L460 AbstractCegarLoop]: Interpolant automaton has 116 states [2021-05-02 19:11:27,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:11:27,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2021-05-02 19:11:27,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2395, Invalid=10945, Unknown=0, NotChecked=0, Total=13340 [2021-05-02 19:11:27,141 INFO L87 Difference]: Start difference. First operand 143 states and 147 transitions. Second operand has 116 states, 116 states have (on average 2.0172413793103448) internal successors, (234), 115 states have internal predecessors, (234), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:11:33,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:11:33,290 INFO L93 Difference]: Finished difference Result 147 states and 150 transitions. [2021-05-02 19:11:33,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-05-02 19:11:33,291 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 116 states have (on average 2.0172413793103448) internal successors, (234), 115 states have internal predecessors, (234), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 131 [2021-05-02 19:11:33,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:11:33,292 INFO L225 Difference]: With dead ends: 147 [2021-05-02 19:11:33,292 INFO L226 Difference]: Without dead ends: 143 [2021-05-02 19:11:33,294 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 79 SyntacticMatches, 2 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12093 ImplicationChecksByTransitivity, 10450.9ms TimeCoverageRelationStatistics Valid=4872, Invalid=24884, Unknown=0, NotChecked=0, Total=29756 [2021-05-02 19:11:33,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-05-02 19:11:33,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 142. [2021-05-02 19:11:33,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 130 states have (on average 1.0307692307692307) internal successors, (134), 132 states have internal predecessors, (134), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:11:33,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 145 transitions. [2021-05-02 19:11:33,295 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 145 transitions. Word has length 131 [2021-05-02 19:11:33,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:11:33,295 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 145 transitions. [2021-05-02 19:11:33,295 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 116 states, 116 states have (on average 2.0172413793103448) internal successors, (234), 115 states have internal predecessors, (234), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:11:33,295 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 145 transitions. [2021-05-02 19:11:33,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-05-02 19:11:33,296 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:11:33,296 INFO L523 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:11:33,496 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:11:33,496 INFO L428 AbstractCegarLoop]: === Iteration 104 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:11:33,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:11:33,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1886463207, now seen corresponding path program 49 times [2021-05-02 19:11:33,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:11:33,497 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824692669] [2021-05-02 19:11:33,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:11:33,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:11:33,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:11:33,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:11:33,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:11:33,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:11:34,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-05-02 19:11:34,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:11:35,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 676 proven. 676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:11:35,483 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:11:35,483 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824692669] [2021-05-02 19:11:35,483 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824692669] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:11:35,483 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266589176] [2021-05-02 19:11:35,483 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:11:35,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:11:35,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 61 conjunts are in the unsatisfiable core [2021-05-02 19:11:35,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:11:35,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:35,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:35,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:35,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:35,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:35,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:35,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:35,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:35,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:35,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:35,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:35,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:35,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:36,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:36,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:36,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:36,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:36,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:36,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:36,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:36,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:36,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:36,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:36,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:36,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:36,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:36,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:36,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:36,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:36,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:36,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:36,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:36,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:36,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:36,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:36,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:36,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:36,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:37,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:37,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:37,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:37,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:37,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:37,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:37,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:37,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:37,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:37,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:37,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:37,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:37,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:37,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:37,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:37,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:37,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:37,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:37,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:37,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:37,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:37,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:37,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:37,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:37,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:37,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:37,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:37,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:37,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:37,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:37,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:37,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:37,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:37,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:38,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:38,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:38,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:38,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:38,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:38,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:38,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:38,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:38,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:38,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:38,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:38,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:38,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:38,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:38,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:38,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:38,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:38,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:38,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:38,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:38,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:38,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:38,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:38,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:38,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:38,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:38,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:38,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:38,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:38,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:38,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:38,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:38,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:38,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:38,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:38,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:38,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:38,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:38,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:38,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:38,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:38,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:38,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:38,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:39,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 676 proven. 676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:11:39,013 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266589176] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:11:39,013 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:11:39,013 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 62] total 120 [2021-05-02 19:11:39,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753366498] [2021-05-02 19:11:39,013 INFO L460 AbstractCegarLoop]: Interpolant automaton has 120 states [2021-05-02 19:11:39,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:11:39,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2021-05-02 19:11:39,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2565, Invalid=11715, Unknown=0, NotChecked=0, Total=14280 [2021-05-02 19:11:39,014 INFO L87 Difference]: Start difference. First operand 142 states and 145 transitions. Second operand has 120 states, 120 states have (on average 1.9833333333333334) internal successors, (238), 119 states have internal predecessors, (238), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:11:45,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:11:45,230 INFO L93 Difference]: Finished difference Result 160 states and 167 transitions. [2021-05-02 19:11:45,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-05-02 19:11:45,231 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 120 states have (on average 1.9833333333333334) internal successors, (238), 119 states have internal predecessors, (238), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 133 [2021-05-02 19:11:45,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:11:45,231 INFO L225 Difference]: With dead ends: 160 [2021-05-02 19:11:45,231 INFO L226 Difference]: Without dead ends: 155 [2021-05-02 19:11:45,232 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 78 SyntacticMatches, 2 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13997 ImplicationChecksByTransitivity, 8585.5ms TimeCoverageRelationStatistics Valid=5276, Invalid=27666, Unknown=0, NotChecked=0, Total=32942 [2021-05-02 19:11:45,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-05-02 19:11:45,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 145. [2021-05-02 19:11:45,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 133 states have (on average 1.037593984962406) internal successors, (138), 135 states have internal predecessors, (138), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:11:45,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 149 transitions. [2021-05-02 19:11:45,234 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 149 transitions. Word has length 133 [2021-05-02 19:11:45,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:11:45,234 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 149 transitions. [2021-05-02 19:11:45,234 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 120 states, 120 states have (on average 1.9833333333333334) internal successors, (238), 119 states have internal predecessors, (238), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:11:45,234 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 149 transitions. [2021-05-02 19:11:45,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-05-02 19:11:45,235 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:11:45,235 INFO L523 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:11:45,435 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable198 [2021-05-02 19:11:45,435 INFO L428 AbstractCegarLoop]: === Iteration 105 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:11:45,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:11:45,436 INFO L82 PathProgramCache]: Analyzing trace with hash 875220151, now seen corresponding path program 49 times [2021-05-02 19:11:45,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:11:45,436 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38787278] [2021-05-02 19:11:45,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:11:45,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:11:45,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:11:45,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:11:45,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:11:45,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:11:46,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-05-02 19:11:46,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:11:48,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 676 proven. 676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:11:48,614 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:11:48,614 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38787278] [2021-05-02 19:11:48,614 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38787278] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:11:48,614 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555379556] [2021-05-02 19:11:48,615 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:11:48,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:11:48,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 61 conjunts are in the unsatisfiable core [2021-05-02 19:11:48,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:11:48,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:48,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:48,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:48,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:48,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:48,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:48,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:48,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:48,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:48,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:48,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:48,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:48,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:48,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:49,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:49,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:49,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:49,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:49,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:49,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:49,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:49,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:49,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:49,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:49,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:49,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:49,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:49,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:49,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:49,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:49,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:49,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:49,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:49,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:49,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:49,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:49,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:49,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:49,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:49,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:49,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:49,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:49,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:49,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:49,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:49,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:49,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:49,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:49,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:49,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:49,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:49,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:50,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:50,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:50,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:50,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:50,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:50,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:50,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:50,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:50,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:50,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:50,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:50,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:50,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:50,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:50,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:50,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:50,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:50,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:50,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:50,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:50,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:50,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:50,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:50,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:50,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:50,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:50,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:50,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:50,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:50,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:50,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:50,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:50,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:50,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:51,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:51,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:51,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:51,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:51,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:51,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:51,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:51,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:51,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:51,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:51,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:51,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:51,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:51,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:51,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:51,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:51,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:51,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:51,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:51,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:51,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:51,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:51,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:51,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:52,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:52,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:52,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:11:52,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 676 proven. 676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:11:52,179 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555379556] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:11:52,179 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:11:52,180 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 62] total 120 [2021-05-02 19:11:52,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917215132] [2021-05-02 19:11:52,180 INFO L460 AbstractCegarLoop]: Interpolant automaton has 120 states [2021-05-02 19:11:52,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:11:52,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2021-05-02 19:11:52,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2565, Invalid=11715, Unknown=0, NotChecked=0, Total=14280 [2021-05-02 19:11:52,181 INFO L87 Difference]: Start difference. First operand 145 states and 149 transitions. Second operand has 120 states, 120 states have (on average 1.9833333333333334) internal successors, (238), 119 states have internal predecessors, (238), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:11:58,657 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2021-05-02 19:11:59,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:11:59,341 INFO L93 Difference]: Finished difference Result 155 states and 160 transitions. [2021-05-02 19:11:59,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-05-02 19:11:59,344 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 120 states have (on average 1.9833333333333334) internal successors, (238), 119 states have internal predecessors, (238), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 133 [2021-05-02 19:11:59,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:11:59,345 INFO L225 Difference]: With dead ends: 155 [2021-05-02 19:11:59,345 INFO L226 Difference]: Without dead ends: 152 [2021-05-02 19:11:59,346 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 78 SyntacticMatches, 2 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13323 ImplicationChecksByTransitivity, 10625.3ms TimeCoverageRelationStatistics Valid=5276, Invalid=27666, Unknown=0, NotChecked=0, Total=32942 [2021-05-02 19:11:59,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-05-02 19:11:59,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 148. [2021-05-02 19:11:59,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 136 states have (on average 1.0441176470588236) internal successors, (142), 138 states have internal predecessors, (142), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:11:59,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 153 transitions. [2021-05-02 19:11:59,347 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 153 transitions. Word has length 133 [2021-05-02 19:11:59,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:11:59,348 INFO L480 AbstractCegarLoop]: Abstraction has 148 states and 153 transitions. [2021-05-02 19:11:59,348 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 120 states, 120 states have (on average 1.9833333333333334) internal successors, (238), 119 states have internal predecessors, (238), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:11:59,348 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 153 transitions. [2021-05-02 19:11:59,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-05-02 19:11:59,348 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:11:59,348 INFO L523 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:11:59,565 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable200 [2021-05-02 19:11:59,566 INFO L428 AbstractCegarLoop]: === Iteration 106 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:11:59,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:11:59,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1327381021, now seen corresponding path program 50 times [2021-05-02 19:11:59,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:11:59,566 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419713724] [2021-05-02 19:11:59,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:11:59,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:11:59,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:11:59,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:11:59,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:11:59,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:12:00,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-05-02 19:12:00,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:12:02,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1405 backedges. 676 proven. 729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:12:02,142 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:12:02,142 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419713724] [2021-05-02 19:12:02,142 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419713724] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:12:02,142 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178522777] [2021-05-02 19:12:02,142 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:12:02,189 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 19:12:02,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:12:02,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 60 conjunts are in the unsatisfiable core [2021-05-02 19:12:02,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:12:02,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:02,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:02,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:02,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:02,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:02,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:02,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:02,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:02,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:02,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:02,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:02,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:02,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:02,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:02,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:02,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:03,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:03,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:03,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:03,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:03,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:03,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:03,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:03,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:03,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:03,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:03,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:03,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:03,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:03,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:03,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:03,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:03,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:03,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:04,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:04,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:04,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:04,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:04,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:04,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:04,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:04,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:04,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:04,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:04,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:04,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:04,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:04,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:05,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:05,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:05,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:05,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:05,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:05,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:05,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:05,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:05,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:05,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:05,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:05,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:05,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:05,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:05,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:05,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:05,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:05,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:05,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:05,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:05,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:05,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:05,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:05,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:05,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:05,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:05,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:05,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:05,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:05,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:05,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:05,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:05,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:05,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:06,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:06,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:06,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:06,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:06,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:06,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:06,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:06,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:06,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:06,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:06,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:06,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:06,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:06,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:06,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:06,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:06,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:06,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:06,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:06,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:06,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:06,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:06,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:06,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:06,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:06,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:07,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:07,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:07,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:07,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:07,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:07,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:07,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:07,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:07,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1405 backedges. 676 proven. 729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:12:07,301 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178522777] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:12:07,301 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:12:07,301 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 61] total 120 [2021-05-02 19:12:07,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987332372] [2021-05-02 19:12:07,302 INFO L460 AbstractCegarLoop]: Interpolant automaton has 120 states [2021-05-02 19:12:07,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:12:07,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2021-05-02 19:12:07,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2567, Invalid=11713, Unknown=0, NotChecked=0, Total=14280 [2021-05-02 19:12:07,303 INFO L87 Difference]: Start difference. First operand 148 states and 153 transitions. Second operand has 120 states, 120 states have (on average 2.0166666666666666) internal successors, (242), 119 states have internal predecessors, (242), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:12:13,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:12:13,379 INFO L93 Difference]: Finished difference Result 157 states and 162 transitions. [2021-05-02 19:12:13,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-05-02 19:12:13,383 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 120 states have (on average 2.0166666666666666) internal successors, (242), 119 states have internal predecessors, (242), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 135 [2021-05-02 19:12:13,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:12:13,383 INFO L225 Difference]: With dead ends: 157 [2021-05-02 19:12:13,383 INFO L226 Difference]: Without dead ends: 151 [2021-05-02 19:12:13,385 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 81 SyntacticMatches, 2 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13852 ImplicationChecksByTransitivity, 11300.5ms TimeCoverageRelationStatistics Valid=5219, Invalid=26643, Unknown=0, NotChecked=0, Total=31862 [2021-05-02 19:12:13,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-05-02 19:12:13,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 147. [2021-05-02 19:12:13,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 135 states have (on average 1.037037037037037) internal successors, (140), 137 states have internal predecessors, (140), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:12:13,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 151 transitions. [2021-05-02 19:12:13,386 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 151 transitions. Word has length 135 [2021-05-02 19:12:13,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:12:13,386 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 151 transitions. [2021-05-02 19:12:13,386 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 120 states, 120 states have (on average 2.0166666666666666) internal successors, (242), 119 states have internal predecessors, (242), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:12:13,386 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 151 transitions. [2021-05-02 19:12:13,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-05-02 19:12:13,387 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:12:13,387 INFO L523 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:12:13,587 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable202 [2021-05-02 19:12:13,587 INFO L428 AbstractCegarLoop]: === Iteration 107 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:12:13,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:12:13,588 INFO L82 PathProgramCache]: Analyzing trace with hash -252162926, now seen corresponding path program 50 times [2021-05-02 19:12:13,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:12:13,588 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926833573] [2021-05-02 19:12:13,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:12:13,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:12:13,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:12:13,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:12:13,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:12:13,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:12:14,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-05-02 19:12:14,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:12:17,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1405 backedges. 676 proven. 729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:12:17,202 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:12:17,202 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926833573] [2021-05-02 19:12:17,202 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926833573] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:12:17,202 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992285093] [2021-05-02 19:12:17,202 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:12:17,252 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 19:12:17,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:12:17,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 60 conjunts are in the unsatisfiable core [2021-05-02 19:12:17,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:12:17,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:17,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:17,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:17,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:17,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:17,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:17,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:17,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:17,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:17,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:17,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:17,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:17,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:17,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:17,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:17,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:17,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:17,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:17,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:17,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:17,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:17,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:17,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:17,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:18,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:18,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:18,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:18,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:18,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:18,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:18,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:18,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:18,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:18,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:18,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:18,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:18,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:18,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:18,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:18,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:18,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:18,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:18,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:18,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:18,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:18,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:18,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:18,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:18,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:18,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:18,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:18,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:19,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:19,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:19,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:19,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:19,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:19,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:19,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:19,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:19,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:19,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:19,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:19,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:19,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:19,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:19,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:19,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:19,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:19,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:19,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:19,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:19,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:19,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:19,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:19,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:20,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:20,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:20,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:20,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:20,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:20,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:20,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:20,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:20,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:20,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:20,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:20,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:20,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:20,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:20,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:20,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:20,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:20,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:21,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:21,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:21,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:21,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:21,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:21,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:21,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:21,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:21,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:21,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:21,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:21,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:21,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:21,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:22,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:22,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:22,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:22,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:22,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:22,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1405 backedges. 676 proven. 729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:12:22,294 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992285093] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:12:22,294 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:12:22,294 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 61] total 120 [2021-05-02 19:12:22,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397174934] [2021-05-02 19:12:22,294 INFO L460 AbstractCegarLoop]: Interpolant automaton has 120 states [2021-05-02 19:12:22,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:12:22,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2021-05-02 19:12:22,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2567, Invalid=11713, Unknown=0, NotChecked=0, Total=14280 [2021-05-02 19:12:22,295 INFO L87 Difference]: Start difference. First operand 147 states and 151 transitions. Second operand has 120 states, 120 states have (on average 2.0166666666666666) internal successors, (242), 119 states have internal predecessors, (242), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:12:27,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:12:27,960 INFO L93 Difference]: Finished difference Result 151 states and 154 transitions. [2021-05-02 19:12:27,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-05-02 19:12:27,962 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 120 states have (on average 2.0166666666666666) internal successors, (242), 119 states have internal predecessors, (242), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 135 [2021-05-02 19:12:27,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:12:27,962 INFO L225 Difference]: With dead ends: 151 [2021-05-02 19:12:27,962 INFO L226 Difference]: Without dead ends: 147 [2021-05-02 19:12:27,964 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 81 SyntacticMatches, 2 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12989 ImplicationChecksByTransitivity, 12058.5ms TimeCoverageRelationStatistics Valid=5219, Invalid=26643, Unknown=0, NotChecked=0, Total=31862 [2021-05-02 19:12:27,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-05-02 19:12:27,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 146. [2021-05-02 19:12:27,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 134 states have (on average 1.0298507462686568) internal successors, (138), 136 states have internal predecessors, (138), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:12:27,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 149 transitions. [2021-05-02 19:12:27,965 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 149 transitions. Word has length 135 [2021-05-02 19:12:27,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:12:27,965 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 149 transitions. [2021-05-02 19:12:27,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 120 states, 120 states have (on average 2.0166666666666666) internal successors, (242), 119 states have internal predecessors, (242), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:12:27,965 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 149 transitions. [2021-05-02 19:12:27,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-05-02 19:12:27,966 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:12:27,966 INFO L523 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:12:28,176 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:12:28,177 INFO L428 AbstractCegarLoop]: === Iteration 108 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:12:28,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:12:28,177 INFO L82 PathProgramCache]: Analyzing trace with hash 233499512, now seen corresponding path program 51 times [2021-05-02 19:12:28,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:12:28,177 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297052665] [2021-05-02 19:12:28,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:12:28,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:12:28,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:12:28,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:12:28,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:12:28,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:12:29,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-05-02 19:12:29,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:12:30,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 729 proven. 729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:12:30,449 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:12:30,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297052665] [2021-05-02 19:12:30,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297052665] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:12:30,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969428866] [2021-05-02 19:12:30,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:12:30,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2021-05-02 19:12:30,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:12:30,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 63 conjunts are in the unsatisfiable core [2021-05-02 19:12:30,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:12:30,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:30,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:30,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:30,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:30,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:30,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:30,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:30,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:30,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:30,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:30,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:30,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:31,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:31,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:31,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:31,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:31,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:31,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:31,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:31,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:31,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:31,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:31,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:31,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:31,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:31,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:31,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:31,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:31,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:31,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:31,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:31,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:32,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:32,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:32,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:32,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:32,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:32,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:32,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:32,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:32,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:32,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:32,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:32,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:32,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:32,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:33,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:33,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:33,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:33,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:33,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:33,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:33,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:33,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:33,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:33,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:33,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:33,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:33,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:33,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:33,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:33,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:34,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:34,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:34,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:34,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:34,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:34,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:34,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:34,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:34,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:34,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:34,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:34,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:34,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:34,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:34,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:34,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:34,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:34,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:34,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:34,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:34,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:34,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:34,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:34,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:34,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:34,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:34,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:34,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:34,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:34,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:34,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:34,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:35,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:35,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:35,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:35,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:35,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:35,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:35,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:35,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:35,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:35,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:35,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:35,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:35,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:35,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:35,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:35,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:35,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:35,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:35,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:35,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:36,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:36,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:36,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:36,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:36,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:36,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:36,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 729 proven. 729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:12:36,199 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969428866] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:12:36,200 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:12:36,200 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 64] total 124 [2021-05-02 19:12:36,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511110356] [2021-05-02 19:12:36,200 INFO L460 AbstractCegarLoop]: Interpolant automaton has 124 states [2021-05-02 19:12:36,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:12:36,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2021-05-02 19:12:36,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2743, Invalid=12509, Unknown=0, NotChecked=0, Total=15252 [2021-05-02 19:12:36,201 INFO L87 Difference]: Start difference. First operand 146 states and 149 transitions. Second operand has 124 states, 124 states have (on average 1.9838709677419355) internal successors, (246), 123 states have internal predecessors, (246), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:12:43,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:12:43,830 INFO L93 Difference]: Finished difference Result 164 states and 171 transitions. [2021-05-02 19:12:43,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-05-02 19:12:43,832 INFO L78 Accepts]: Start accepts. Automaton has has 124 states, 124 states have (on average 1.9838709677419355) internal successors, (246), 123 states have internal predecessors, (246), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 137 [2021-05-02 19:12:43,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:12:43,833 INFO L225 Difference]: With dead ends: 164 [2021-05-02 19:12:43,833 INFO L226 Difference]: Without dead ends: 159 [2021-05-02 19:12:43,834 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 80 SyntacticMatches, 2 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14990 ImplicationChecksByTransitivity, 12076.2ms TimeCoverageRelationStatistics Valid=5636, Invalid=29520, Unknown=0, NotChecked=0, Total=35156 [2021-05-02 19:12:43,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-05-02 19:12:43,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 149. [2021-05-02 19:12:43,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 137 states have (on average 1.0364963503649636) internal successors, (142), 139 states have internal predecessors, (142), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:12:43,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 153 transitions. [2021-05-02 19:12:43,836 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 153 transitions. Word has length 137 [2021-05-02 19:12:43,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:12:43,836 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 153 transitions. [2021-05-02 19:12:43,836 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 124 states, 124 states have (on average 1.9838709677419355) internal successors, (246), 123 states have internal predecessors, (246), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:12:43,836 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 153 transitions. [2021-05-02 19:12:43,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-05-02 19:12:43,837 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:12:43,837 INFO L523 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:12:44,039 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable206 [2021-05-02 19:12:44,039 INFO L428 AbstractCegarLoop]: === Iteration 109 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:12:44,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:12:44,040 INFO L82 PathProgramCache]: Analyzing trace with hash -68079274, now seen corresponding path program 51 times [2021-05-02 19:12:44,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:12:44,040 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395099680] [2021-05-02 19:12:44,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:12:44,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:12:44,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:12:44,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:12:44,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:12:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:12:45,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-05-02 19:12:45,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:12:48,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 729 proven. 729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:12:48,186 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:12:48,186 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395099680] [2021-05-02 19:12:48,186 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395099680] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:12:48,186 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918889732] [2021-05-02 19:12:48,186 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:12:48,275 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2021-05-02 19:12:48,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:12:48,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 63 conjunts are in the unsatisfiable core [2021-05-02 19:12:48,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:12:48,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:48,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:48,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:48,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:48,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:48,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:48,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:48,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:48,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:48,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:48,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:48,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:48,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:48,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:48,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:48,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:48,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:48,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:48,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:48,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:48,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:48,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:49,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:49,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:49,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:49,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:49,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:49,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:49,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:49,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:49,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:49,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:49,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:49,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:49,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:49,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:49,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:49,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:49,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:49,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:49,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:49,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:49,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:49,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:49,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:49,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:49,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:49,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:50,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:50,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:50,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:50,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:50,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:50,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:50,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:50,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:50,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:50,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:50,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:50,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:50,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:50,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:50,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:50,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:50,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:50,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:50,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:50,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:51,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:51,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:51,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:51,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:51,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:51,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:51,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:51,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:51,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:51,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:51,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:51,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:51,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:51,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:51,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:51,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:51,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:51,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:51,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:51,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:52,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:52,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:52,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:52,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:52,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:52,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:52,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:52,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:52,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:52,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:52,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:52,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:52,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:52,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:52,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:52,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:52,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:52,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:52,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:52,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:53,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:53,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:53,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:53,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:53,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:53,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:53,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:53,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:53,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:12:53,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 729 proven. 729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:12:53,533 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918889732] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:12:53,533 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:12:53,533 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 64] total 124 [2021-05-02 19:12:53,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576424965] [2021-05-02 19:12:53,534 INFO L460 AbstractCegarLoop]: Interpolant automaton has 124 states [2021-05-02 19:12:53,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:12:53,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2021-05-02 19:12:53,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2743, Invalid=12509, Unknown=0, NotChecked=0, Total=15252 [2021-05-02 19:12:53,535 INFO L87 Difference]: Start difference. First operand 149 states and 153 transitions. Second operand has 124 states, 124 states have (on average 1.9838709677419355) internal successors, (246), 123 states have internal predecessors, (246), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:13:01,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:13:01,766 INFO L93 Difference]: Finished difference Result 159 states and 164 transitions. [2021-05-02 19:13:01,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-05-02 19:13:01,768 INFO L78 Accepts]: Start accepts. Automaton has has 124 states, 124 states have (on average 1.9838709677419355) internal successors, (246), 123 states have internal predecessors, (246), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 137 [2021-05-02 19:13:01,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:13:01,769 INFO L225 Difference]: With dead ends: 159 [2021-05-02 19:13:01,769 INFO L226 Difference]: Without dead ends: 156 [2021-05-02 19:13:01,770 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 80 SyntacticMatches, 2 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14263 ImplicationChecksByTransitivity, 13797.6ms TimeCoverageRelationStatistics Valid=5636, Invalid=29520, Unknown=0, NotChecked=0, Total=35156 [2021-05-02 19:13:01,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-05-02 19:13:01,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 152. [2021-05-02 19:13:01,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 140 states have (on average 1.042857142857143) internal successors, (146), 142 states have internal predecessors, (146), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:13:01,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 157 transitions. [2021-05-02 19:13:01,772 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 157 transitions. Word has length 137 [2021-05-02 19:13:01,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:13:01,772 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 157 transitions. [2021-05-02 19:13:01,772 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 124 states, 124 states have (on average 1.9838709677419355) internal successors, (246), 123 states have internal predecessors, (246), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:13:01,772 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 157 transitions. [2021-05-02 19:13:01,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-05-02 19:13:01,772 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:13:01,773 INFO L523 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:13:01,976 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable208 [2021-05-02 19:13:01,977 INFO L428 AbstractCegarLoop]: === Iteration 110 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:13:01,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:13:01,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1054733052, now seen corresponding path program 52 times [2021-05-02 19:13:01,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:13:01,977 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773647311] [2021-05-02 19:13:01,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:13:01,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:13:02,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:13:02,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:13:02,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:13:02,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:13:03,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-05-02 19:13:03,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:13:04,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1513 backedges. 729 proven. 784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:13:04,868 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:13:04,868 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773647311] [2021-05-02 19:13:04,869 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773647311] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:13:04,869 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692768936] [2021-05-02 19:13:04,869 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:13:04,918 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 19:13:04,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:13:04,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 62 conjunts are in the unsatisfiable core [2021-05-02 19:13:04,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:13:05,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:05,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:05,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:05,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:05,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:05,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:05,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:05,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:05,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:05,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:05,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:05,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:05,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:05,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:05,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:05,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:05,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:05,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:05,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:05,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:06,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:06,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:06,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:06,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:06,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:06,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:06,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:06,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:06,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:06,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:06,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:06,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:06,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:06,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:06,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:06,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:06,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:06,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:07,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:07,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:07,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:07,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:07,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:07,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:07,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:07,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:07,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:07,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:07,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:07,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:07,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:07,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:08,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:08,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:08,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:08,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:08,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:08,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:08,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:08,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:08,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:08,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:08,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:08,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:08,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:08,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:08,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:08,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:08,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:08,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:08,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:08,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:08,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:08,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:08,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:08,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:08,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:08,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:08,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:08,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:08,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:08,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:08,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:08,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:08,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:08,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:09,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:09,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:09,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:09,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:09,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:09,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:09,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:09,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:09,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:09,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:09,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:09,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:09,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:09,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:09,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:09,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:09,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:09,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:09,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:09,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:09,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:09,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:09,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:09,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:09,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:09,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:10,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:10,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:10,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:10,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:10,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:10,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:10,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:10,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:10,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1513 backedges. 729 proven. 784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:13:10,311 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692768936] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:13:10,311 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:13:10,311 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 63] total 124 [2021-05-02 19:13:10,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967765081] [2021-05-02 19:13:10,312 INFO L460 AbstractCegarLoop]: Interpolant automaton has 124 states [2021-05-02 19:13:10,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:13:10,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2021-05-02 19:13:10,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2745, Invalid=12507, Unknown=0, NotChecked=0, Total=15252 [2021-05-02 19:13:10,313 INFO L87 Difference]: Start difference. First operand 152 states and 157 transitions. Second operand has 124 states, 124 states have (on average 2.0161290322580645) internal successors, (250), 123 states have internal predecessors, (250), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:13:16,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:13:16,249 INFO L93 Difference]: Finished difference Result 161 states and 166 transitions. [2021-05-02 19:13:16,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-05-02 19:13:16,252 INFO L78 Accepts]: Start accepts. Automaton has has 124 states, 124 states have (on average 2.0161290322580645) internal successors, (250), 123 states have internal predecessors, (250), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 139 [2021-05-02 19:13:16,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:13:16,252 INFO L225 Difference]: With dead ends: 161 [2021-05-02 19:13:16,252 INFO L226 Difference]: Without dead ends: 155 [2021-05-02 19:13:16,254 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 83 SyntacticMatches, 2 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14840 ImplicationChecksByTransitivity, 12050.6ms TimeCoverageRelationStatistics Valid=5578, Invalid=28462, Unknown=0, NotChecked=0, Total=34040 [2021-05-02 19:13:16,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-05-02 19:13:16,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 151. [2021-05-02 19:13:16,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 139 states have (on average 1.0359712230215827) internal successors, (144), 141 states have internal predecessors, (144), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:13:16,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 155 transitions. [2021-05-02 19:13:16,255 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 155 transitions. Word has length 139 [2021-05-02 19:13:16,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:13:16,255 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 155 transitions. [2021-05-02 19:13:16,255 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 124 states, 124 states have (on average 2.0161290322580645) internal successors, (250), 123 states have internal predecessors, (250), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:13:16,255 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 155 transitions. [2021-05-02 19:13:16,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-05-02 19:13:16,256 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:13:16,256 INFO L523 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:13:16,456 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable210 [2021-05-02 19:13:16,456 INFO L428 AbstractCegarLoop]: === Iteration 111 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:13:16,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:13:16,457 INFO L82 PathProgramCache]: Analyzing trace with hash -774047631, now seen corresponding path program 52 times [2021-05-02 19:13:16,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:13:16,457 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176318881] [2021-05-02 19:13:16,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:13:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:13:16,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:13:16,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:13:16,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:13:16,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:13:17,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-05-02 19:13:17,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:13:20,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1513 backedges. 729 proven. 784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:13:20,131 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:13:20,131 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176318881] [2021-05-02 19:13:20,131 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176318881] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:13:20,131 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444132341] [2021-05-02 19:13:20,131 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:13:20,179 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 19:13:20,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:13:20,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 62 conjunts are in the unsatisfiable core [2021-05-02 19:13:20,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:13:20,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:20,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:20,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:20,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:20,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:20,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:20,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:20,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:20,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:20,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:20,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:20,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:20,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:20,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:20,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:20,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:20,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:20,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:20,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:20,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:20,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:20,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:20,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:20,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:20,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:20,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:20,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:20,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:20,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:20,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:21,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:21,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:21,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:21,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:21,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:21,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:21,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:21,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:21,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:21,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:21,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:21,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:21,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:21,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:21,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:21,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:21,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:21,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:21,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:21,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:21,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:21,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:21,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:21,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:22,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:22,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:22,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:22,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:22,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:22,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:22,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:22,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:22,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:22,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:22,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:22,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:22,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:22,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:22,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:22,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:22,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:22,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:22,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:22,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:22,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:22,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:22,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:22,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:23,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:23,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:23,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:23,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:23,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:23,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:23,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:23,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:23,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:23,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:23,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:23,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:23,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:23,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:23,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:23,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:23,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:23,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:24,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:24,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:24,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:24,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:24,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:24,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:24,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:24,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:24,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:24,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:24,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:24,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:24,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:24,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:24,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:24,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:25,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:25,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:25,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:25,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:25,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:25,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1513 backedges. 729 proven. 784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:13:25,228 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444132341] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:13:25,228 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:13:25,228 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 63] total 124 [2021-05-02 19:13:25,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133570818] [2021-05-02 19:13:25,228 INFO L460 AbstractCegarLoop]: Interpolant automaton has 124 states [2021-05-02 19:13:25,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:13:25,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2021-05-02 19:13:25,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2745, Invalid=12507, Unknown=0, NotChecked=0, Total=15252 [2021-05-02 19:13:25,229 INFO L87 Difference]: Start difference. First operand 151 states and 155 transitions. Second operand has 124 states, 124 states have (on average 2.0161290322580645) internal successors, (250), 123 states have internal predecessors, (250), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:13:31,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:13:31,285 INFO L93 Difference]: Finished difference Result 155 states and 158 transitions. [2021-05-02 19:13:31,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-05-02 19:13:31,288 INFO L78 Accepts]: Start accepts. Automaton has has 124 states, 124 states have (on average 2.0161290322580645) internal successors, (250), 123 states have internal predecessors, (250), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 139 [2021-05-02 19:13:31,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:13:31,288 INFO L225 Difference]: With dead ends: 155 [2021-05-02 19:13:31,288 INFO L226 Difference]: Without dead ends: 151 [2021-05-02 19:13:31,290 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 83 SyntacticMatches, 2 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13917 ImplicationChecksByTransitivity, 12450.9ms TimeCoverageRelationStatistics Valid=5578, Invalid=28462, Unknown=0, NotChecked=0, Total=34040 [2021-05-02 19:13:31,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-05-02 19:13:31,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 150. [2021-05-02 19:13:31,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 138 states have (on average 1.0289855072463767) internal successors, (142), 140 states have internal predecessors, (142), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:13:31,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 153 transitions. [2021-05-02 19:13:31,291 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 153 transitions. Word has length 139 [2021-05-02 19:13:31,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:13:31,291 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 153 transitions. [2021-05-02 19:13:31,291 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 124 states, 124 states have (on average 2.0161290322580645) internal successors, (250), 123 states have internal predecessors, (250), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:13:31,291 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 153 transitions. [2021-05-02 19:13:31,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-05-02 19:13:31,292 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:13:31,292 INFO L523 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:13:31,507 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:13:31,508 INFO L428 AbstractCegarLoop]: === Iteration 112 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:13:31,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:13:31,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1213471639, now seen corresponding path program 53 times [2021-05-02 19:13:31,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:13:31,508 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46487430] [2021-05-02 19:13:31,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:13:31,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:13:31,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:13:31,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:13:31,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:13:31,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:13:33,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-05-02 19:13:33,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:13:34,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 784 proven. 784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:13:34,767 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:13:34,767 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46487430] [2021-05-02 19:13:34,768 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46487430] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:13:34,768 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779166849] [2021-05-02 19:13:34,768 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:13:34,828 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) [2021-05-02 19:13:34,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:13:34,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 65 conjunts are in the unsatisfiable core [2021-05-02 19:13:34,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:13:35,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:35,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:35,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:35,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:35,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:35,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:35,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:35,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:35,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:35,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:35,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:35,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:35,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:35,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:35,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:35,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:35,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:35,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:35,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:35,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:35,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:35,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:36,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:36,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:36,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:36,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:36,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:36,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:36,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:36,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:36,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:36,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:36,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:36,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:36,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:36,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:36,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:36,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:37,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:37,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:37,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:37,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:37,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:37,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:37,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:37,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:37,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:37,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:37,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:37,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:37,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:37,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:38,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:38,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:38,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:38,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:38,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:38,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:38,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:38,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:38,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:38,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:38,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:38,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:38,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:38,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:38,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:38,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:38,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:38,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:38,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:38,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:38,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:38,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:38,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:38,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:38,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:38,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:39,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:39,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:39,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:39,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:39,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:39,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:39,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:39,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:39,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:39,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:39,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:39,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:39,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:39,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:39,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:39,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:39,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:39,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:39,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:39,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:39,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:39,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:39,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:39,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:39,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:39,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:40,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:40,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:40,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:40,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:40,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:40,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:40,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:40,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:40,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:40,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:40,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:40,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:40,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:40,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:40,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:40,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:40,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:40,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:40,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:40,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:40,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 784 proven. 784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:13:40,783 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779166849] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:13:40,783 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:13:40,783 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 66] total 128 [2021-05-02 19:13:40,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149677455] [2021-05-02 19:13:40,784 INFO L460 AbstractCegarLoop]: Interpolant automaton has 128 states [2021-05-02 19:13:40,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:13:40,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2021-05-02 19:13:40,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2927, Invalid=13329, Unknown=0, NotChecked=0, Total=16256 [2021-05-02 19:13:40,785 INFO L87 Difference]: Start difference. First operand 150 states and 153 transitions. Second operand has 128 states, 128 states have (on average 1.984375) internal successors, (254), 127 states have internal predecessors, (254), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:13:44,787 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2021-05-02 19:13:50,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:13:50,620 INFO L93 Difference]: Finished difference Result 168 states and 175 transitions. [2021-05-02 19:13:50,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-05-02 19:13:50,622 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 128 states have (on average 1.984375) internal successors, (254), 127 states have internal predecessors, (254), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 141 [2021-05-02 19:13:50,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:13:50,623 INFO L225 Difference]: With dead ends: 168 [2021-05-02 19:13:50,623 INFO L226 Difference]: Without dead ends: 163 [2021-05-02 19:13:50,624 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 82 SyntacticMatches, 2 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16017 ImplicationChecksByTransitivity, 14280.5ms TimeCoverageRelationStatistics Valid=6008, Invalid=31434, Unknown=0, NotChecked=0, Total=37442 [2021-05-02 19:13:50,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-05-02 19:13:50,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 153. [2021-05-02 19:13:50,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 141 states have (on average 1.0354609929078014) internal successors, (146), 143 states have internal predecessors, (146), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:13:50,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 157 transitions. [2021-05-02 19:13:50,626 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 157 transitions. Word has length 141 [2021-05-02 19:13:50,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:13:50,626 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 157 transitions. [2021-05-02 19:13:50,626 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 128 states, 128 states have (on average 1.984375) internal successors, (254), 127 states have internal predecessors, (254), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:13:50,626 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 157 transitions. [2021-05-02 19:13:50,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-05-02 19:13:50,627 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:13:50,627 INFO L523 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:13:50,827 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable214 [2021-05-02 19:13:50,827 INFO L428 AbstractCegarLoop]: === Iteration 113 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:13:50,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:13:50,828 INFO L82 PathProgramCache]: Analyzing trace with hash -830429771, now seen corresponding path program 53 times [2021-05-02 19:13:50,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:13:50,828 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071619679] [2021-05-02 19:13:50,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:13:50,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:13:50,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:13:50,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:13:50,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:13:50,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:13:52,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-05-02 19:13:52,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:13:55,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 784 proven. 784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:13:55,068 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:13:55,068 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071619679] [2021-05-02 19:13:55,068 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071619679] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:13:55,068 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048364858] [2021-05-02 19:13:55,068 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:13:55,125 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) [2021-05-02 19:13:55,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:13:55,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 65 conjunts are in the unsatisfiable core [2021-05-02 19:13:55,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:13:55,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:55,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:55,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:55,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:55,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:55,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:55,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:55,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:55,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:55,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:55,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:55,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:55,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:55,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:55,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:55,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:55,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:55,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:55,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:55,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:55,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:55,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:55,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:55,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:55,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:55,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:55,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:56,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:56,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:56,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:56,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:56,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:56,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:56,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:56,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:56,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:56,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:56,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:56,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:56,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:56,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:56,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:56,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:56,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:56,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:56,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:56,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:56,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:56,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:56,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:56,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:56,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:57,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:57,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:57,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:57,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:57,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:57,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:57,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:57,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:57,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:57,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:57,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:57,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:57,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:57,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:57,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:57,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:57,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:57,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:57,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:57,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:57,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:57,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:58,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:58,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:58,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:58,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:58,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:58,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:58,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:58,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:58,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:58,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:58,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:58,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:58,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:58,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:58,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:58,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:58,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:58,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:59,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:59,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:59,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:59,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:59,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:59,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:59,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:59,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:59,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:59,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:59,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:59,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:59,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:13:59,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:00,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:00,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:00,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:00,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:00,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:00,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:00,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:00,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:00,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:00,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:00,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:00,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:01,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:01,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:01,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:01,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 784 proven. 784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:14:01,148 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048364858] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:14:01,148 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:14:01,148 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 66] total 128 [2021-05-02 19:14:01,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313033193] [2021-05-02 19:14:01,149 INFO L460 AbstractCegarLoop]: Interpolant automaton has 128 states [2021-05-02 19:14:01,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:14:01,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2021-05-02 19:14:01,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2927, Invalid=13329, Unknown=0, NotChecked=0, Total=16256 [2021-05-02 19:14:01,150 INFO L87 Difference]: Start difference. First operand 153 states and 157 transitions. Second operand has 128 states, 128 states have (on average 1.984375) internal successors, (254), 127 states have internal predecessors, (254), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:14:08,598 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2021-05-02 19:14:09,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:14:09,229 INFO L93 Difference]: Finished difference Result 163 states and 168 transitions. [2021-05-02 19:14:09,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-05-02 19:14:09,231 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 128 states have (on average 1.984375) internal successors, (254), 127 states have internal predecessors, (254), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 141 [2021-05-02 19:14:09,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:14:09,232 INFO L225 Difference]: With dead ends: 163 [2021-05-02 19:14:09,232 INFO L226 Difference]: Without dead ends: 160 [2021-05-02 19:14:09,233 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 82 SyntacticMatches, 2 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15235 ImplicationChecksByTransitivity, 15389.4ms TimeCoverageRelationStatistics Valid=6008, Invalid=31434, Unknown=0, NotChecked=0, Total=37442 [2021-05-02 19:14:09,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-05-02 19:14:09,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 156. [2021-05-02 19:14:09,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 144 states have (on average 1.0416666666666667) internal successors, (150), 146 states have internal predecessors, (150), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:14:09,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 161 transitions. [2021-05-02 19:14:09,235 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 161 transitions. Word has length 141 [2021-05-02 19:14:09,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:14:09,235 INFO L480 AbstractCegarLoop]: Abstraction has 156 states and 161 transitions. [2021-05-02 19:14:09,235 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 128 states, 128 states have (on average 1.984375) internal successors, (254), 127 states have internal predecessors, (254), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:14:09,235 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 161 transitions. [2021-05-02 19:14:09,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-05-02 19:14:09,235 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:14:09,236 INFO L523 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:14:09,436 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216,109 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:14:09,436 INFO L428 AbstractCegarLoop]: === Iteration 114 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:14:09,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:14:09,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1419654245, now seen corresponding path program 54 times [2021-05-02 19:14:09,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:14:09,436 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098091472] [2021-05-02 19:14:09,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:14:09,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:14:09,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:14:09,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:14:09,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:14:09,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:14:10,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-05-02 19:14:10,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:14:12,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 784 proven. 841 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:14:12,429 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:14:12,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098091472] [2021-05-02 19:14:12,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098091472] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:14:12,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049869186] [2021-05-02 19:14:12,429 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:14:12,499 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 30 check-sat command(s) [2021-05-02 19:14:12,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:14:12,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 64 conjunts are in the unsatisfiable core [2021-05-02 19:14:12,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:14:12,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:12,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:12,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:12,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:12,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:12,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:12,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:12,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:12,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:12,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:13,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:13,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:13,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:13,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:13,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:13,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:13,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:13,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:13,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:13,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:13,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:13,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:13,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:13,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:13,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:13,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:13,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:13,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:14,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:14,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:14,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:14,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:14,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:14,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:14,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:14,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:14,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:14,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:14,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:14,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:14,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:14,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:15,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:15,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:15,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:15,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:15,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:15,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:15,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:15,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:15,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:15,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:15,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:15,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:15,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:15,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:16,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:16,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:16,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:16,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:16,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:16,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:16,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:16,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:16,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:16,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:16,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:16,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:16,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:16,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:16,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:16,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:16,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:16,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:16,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:16,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:16,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:16,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:16,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:16,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:16,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:16,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:16,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:16,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:16,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:16,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:16,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:16,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:16,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:16,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:16,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:16,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:16,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:16,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:17,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:17,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:17,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:17,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:17,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:17,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:17,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:17,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:17,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:17,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:17,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:17,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:17,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:17,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:17,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:17,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:17,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:17,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:17,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:17,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:17,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:17,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:17,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:17,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:18,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:18,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:18,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:18,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:18,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:18,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:18,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 784 proven. 841 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:14:18,213 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049869186] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:14:18,213 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:14:18,213 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 65] total 128 [2021-05-02 19:14:18,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342276328] [2021-05-02 19:14:18,214 INFO L460 AbstractCegarLoop]: Interpolant automaton has 128 states [2021-05-02 19:14:18,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:14:18,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2021-05-02 19:14:18,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2929, Invalid=13327, Unknown=0, NotChecked=0, Total=16256 [2021-05-02 19:14:18,215 INFO L87 Difference]: Start difference. First operand 156 states and 161 transitions. Second operand has 128 states, 128 states have (on average 2.015625) internal successors, (258), 127 states have internal predecessors, (258), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:14:25,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:14:25,450 INFO L93 Difference]: Finished difference Result 165 states and 170 transitions. [2021-05-02 19:14:25,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-05-02 19:14:25,452 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 128 states have (on average 2.015625) internal successors, (258), 127 states have internal predecessors, (258), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 143 [2021-05-02 19:14:25,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:14:25,452 INFO L225 Difference]: With dead ends: 165 [2021-05-02 19:14:25,452 INFO L226 Difference]: Without dead ends: 159 [2021-05-02 19:14:25,454 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 85 SyntacticMatches, 2 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15862 ImplicationChecksByTransitivity, 12322.8ms TimeCoverageRelationStatistics Valid=5949, Invalid=30341, Unknown=0, NotChecked=0, Total=36290 [2021-05-02 19:14:25,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-05-02 19:14:25,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 155. [2021-05-02 19:14:25,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 143 states have (on average 1.034965034965035) internal successors, (148), 145 states have internal predecessors, (148), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:14:25,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 159 transitions. [2021-05-02 19:14:25,455 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 159 transitions. Word has length 143 [2021-05-02 19:14:25,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:14:25,455 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 159 transitions. [2021-05-02 19:14:25,455 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 128 states, 128 states have (on average 2.015625) internal successors, (258), 127 states have internal predecessors, (258), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:14:25,455 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 159 transitions. [2021-05-02 19:14:25,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-05-02 19:14:25,456 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:14:25,456 INFO L523 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:14:25,656 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable218 [2021-05-02 19:14:25,656 INFO L428 AbstractCegarLoop]: === Iteration 115 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:14:25,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:14:25,657 INFO L82 PathProgramCache]: Analyzing trace with hash 2048197648, now seen corresponding path program 54 times [2021-05-02 19:14:25,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:14:25,657 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557176304] [2021-05-02 19:14:25,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:14:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:14:25,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:14:25,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:14:25,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:14:25,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:14:27,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-05-02 19:14:27,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:14:29,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 784 proven. 841 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:14:29,341 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:14:29,341 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557176304] [2021-05-02 19:14:29,341 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557176304] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:14:29,341 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186067787] [2021-05-02 19:14:29,341 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:14:29,415 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 30 check-sat command(s) [2021-05-02 19:14:29,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:14:29,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 64 conjunts are in the unsatisfiable core [2021-05-02 19:14:29,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:14:29,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:29,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:29,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:29,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:29,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:29,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:29,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:29,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:29,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:29,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:29,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:29,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:29,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:29,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:29,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:29,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:29,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:29,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:29,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:29,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:29,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:29,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:30,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:30,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:30,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:30,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:30,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:30,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:30,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:30,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:30,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:30,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:30,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:30,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:30,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:30,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:30,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:30,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:30,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:30,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:30,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:30,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:30,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:30,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:30,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:30,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:30,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:30,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:30,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:30,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:30,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:30,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:31,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:31,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:31,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:31,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:31,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:31,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:31,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:31,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:31,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:31,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:31,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:31,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:31,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:31,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:31,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:31,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:31,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:31,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:31,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:31,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:31,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:31,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:31,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:31,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:31,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:31,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:32,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:32,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:32,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:32,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:32,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:32,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:32,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:32,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:32,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:32,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:32,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:32,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:32,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:32,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:32,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:32,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:32,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:32,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:32,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:32,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:33,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:33,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:33,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:33,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:33,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:33,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:33,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:33,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:33,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:33,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:33,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:33,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:33,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:33,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:33,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:33,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:34,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:34,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:34,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:34,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:34,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:34,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:34,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:34,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 784 proven. 841 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:14:34,441 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186067787] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:14:34,441 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:14:34,441 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 65] total 128 [2021-05-02 19:14:34,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287476882] [2021-05-02 19:14:34,442 INFO L460 AbstractCegarLoop]: Interpolant automaton has 128 states [2021-05-02 19:14:34,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:14:34,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2021-05-02 19:14:34,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2929, Invalid=13327, Unknown=0, NotChecked=0, Total=16256 [2021-05-02 19:14:34,443 INFO L87 Difference]: Start difference. First operand 155 states and 159 transitions. Second operand has 128 states, 128 states have (on average 2.015625) internal successors, (258), 127 states have internal predecessors, (258), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:14:43,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:14:43,049 INFO L93 Difference]: Finished difference Result 159 states and 162 transitions. [2021-05-02 19:14:43,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-05-02 19:14:43,051 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 128 states have (on average 2.015625) internal successors, (258), 127 states have internal predecessors, (258), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 143 [2021-05-02 19:14:43,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:14:43,052 INFO L225 Difference]: With dead ends: 159 [2021-05-02 19:14:43,052 INFO L226 Difference]: Without dead ends: 155 [2021-05-02 19:14:43,053 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 85 SyntacticMatches, 2 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14877 ImplicationChecksByTransitivity, 12749.2ms TimeCoverageRelationStatistics Valid=5949, Invalid=30341, Unknown=0, NotChecked=0, Total=36290 [2021-05-02 19:14:43,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-05-02 19:14:43,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 154. [2021-05-02 19:14:43,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 142 states have (on average 1.028169014084507) internal successors, (146), 144 states have internal predecessors, (146), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:14:43,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 157 transitions. [2021-05-02 19:14:43,055 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 157 transitions. Word has length 143 [2021-05-02 19:14:43,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:14:43,055 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 157 transitions. [2021-05-02 19:14:43,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 128 states, 128 states have (on average 2.015625) internal successors, (258), 127 states have internal predecessors, (258), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:14:43,055 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 157 transitions. [2021-05-02 19:14:43,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-05-02 19:14:43,055 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:14:43,055 INFO L523 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:14:43,271 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220,111 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:14:43,271 INFO L428 AbstractCegarLoop]: === Iteration 116 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:14:43,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:14:43,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1028146314, now seen corresponding path program 55 times [2021-05-02 19:14:43,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:14:43,271 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875538020] [2021-05-02 19:14:43,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:14:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:14:43,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:14:43,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:14:43,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:14:43,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:14:44,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-05-02 19:14:44,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:14:46,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 841 proven. 841 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:14:46,412 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:14:46,412 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875538020] [2021-05-02 19:14:46,412 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875538020] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:14:46,412 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690706738] [2021-05-02 19:14:46,412 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:14:46,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:14:46,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 67 conjunts are in the unsatisfiable core [2021-05-02 19:14:46,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:14:46,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:46,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:46,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:46,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:46,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:46,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:46,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:46,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:46,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:46,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:47,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:47,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:47,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:47,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:47,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:47,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:47,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:47,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:47,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:47,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:47,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:47,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:47,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:47,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:47,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:47,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:47,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:47,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:48,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:48,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:48,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:48,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:48,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:48,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:48,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:48,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:48,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:48,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:48,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:48,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:48,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:48,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:48,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:48,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:49,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:49,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:49,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:49,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:49,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:49,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:49,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:49,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:49,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:49,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:49,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:49,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:49,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:49,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:50,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:50,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:50,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:50,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:50,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:50,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:50,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:50,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:50,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:50,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:50,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:50,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:50,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:50,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:50,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:50,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:50,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:50,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:50,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:50,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:50,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:50,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:50,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:50,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:50,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:50,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:50,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:50,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:50,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:50,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:50,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:50,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:50,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:50,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:51,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:51,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:51,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:51,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:51,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:51,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:51,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:51,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:51,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:51,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:51,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:51,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:51,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:51,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:51,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:51,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:51,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:51,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:51,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:51,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:51,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:51,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:51,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:51,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:51,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:51,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:51,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:51,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:52,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:52,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:52,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:52,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:52,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:52,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:52,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:52,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:14:52,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 841 proven. 841 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:14:52,304 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690706738] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:14:52,304 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:14:52,305 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 68] total 132 [2021-05-02 19:14:52,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124537216] [2021-05-02 19:14:52,305 INFO L460 AbstractCegarLoop]: Interpolant automaton has 132 states [2021-05-02 19:14:52,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:14:52,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2021-05-02 19:14:52,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3117, Invalid=14175, Unknown=0, NotChecked=0, Total=17292 [2021-05-02 19:14:52,306 INFO L87 Difference]: Start difference. First operand 154 states and 157 transitions. Second operand has 132 states, 132 states have (on average 1.9848484848484849) internal successors, (262), 131 states have internal predecessors, (262), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:14:55,986 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2021-05-02 19:14:56,198 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2021-05-02 19:15:00,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:15:00,512 INFO L93 Difference]: Finished difference Result 172 states and 179 transitions. [2021-05-02 19:15:00,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-05-02 19:15:00,514 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 132 states have (on average 1.9848484848484849) internal successors, (262), 131 states have internal predecessors, (262), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 145 [2021-05-02 19:15:00,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:15:00,514 INFO L225 Difference]: With dead ends: 172 [2021-05-02 19:15:00,514 INFO L226 Difference]: Without dead ends: 167 [2021-05-02 19:15:00,516 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 84 SyntacticMatches, 2 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17078 ImplicationChecksByTransitivity, 13995.1ms TimeCoverageRelationStatistics Valid=6392, Invalid=33408, Unknown=0, NotChecked=0, Total=39800 [2021-05-02 19:15:00,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-05-02 19:15:00,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 157. [2021-05-02 19:15:00,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 145 states have (on average 1.0344827586206897) internal successors, (150), 147 states have internal predecessors, (150), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:15:00,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 161 transitions. [2021-05-02 19:15:00,518 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 161 transitions. Word has length 145 [2021-05-02 19:15:00,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:15:00,518 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 161 transitions. [2021-05-02 19:15:00,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 132 states, 132 states have (on average 1.9848484848484849) internal successors, (262), 131 states have internal predecessors, (262), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:15:00,518 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 161 transitions. [2021-05-02 19:15:00,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-05-02 19:15:00,518 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:15:00,518 INFO L523 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:15:00,732 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable222 [2021-05-02 19:15:00,733 INFO L428 AbstractCegarLoop]: === Iteration 117 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:15:00,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:15:00,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1888123348, now seen corresponding path program 55 times [2021-05-02 19:15:00,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:15:00,733 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837083121] [2021-05-02 19:15:00,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:15:00,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:15:00,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:15:00,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:15:00,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:15:00,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:15:02,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-05-02 19:15:02,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:15:05,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 841 proven. 841 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:15:05,693 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:15:05,693 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837083121] [2021-05-02 19:15:05,694 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837083121] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:15:05,694 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939147411] [2021-05-02 19:15:05,694 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:15:05,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:15:05,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 67 conjunts are in the unsatisfiable core [2021-05-02 19:15:05,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:15:05,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:05,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:05,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:05,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:05,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:05,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:06,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:06,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:06,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:06,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:06,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:06,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:06,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:06,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:06,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:06,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:06,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:06,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:06,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:06,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:06,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:06,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:06,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:06,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:06,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:06,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:06,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:06,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:06,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:06,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:06,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:06,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:06,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:06,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:07,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:07,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:07,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:07,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:07,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:07,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:07,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:07,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:07,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:07,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:07,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:07,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:07,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:07,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:07,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:07,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:07,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:07,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:08,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:08,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:08,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:08,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:08,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:08,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:08,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:08,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:08,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:08,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:08,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:08,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:08,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:08,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:08,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:08,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:08,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:08,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:08,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:08,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:09,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:09,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:09,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:09,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:09,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:09,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:09,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:09,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:09,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:09,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:09,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:09,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:09,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:09,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:09,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:09,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:10,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:10,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:10,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:10,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:10,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:10,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:10,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:10,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:10,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:10,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:10,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:10,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:10,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:10,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:11,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:11,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:11,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:11,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:11,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:11,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:11,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:11,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:11,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:11,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:11,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:11,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:12,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:12,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:12,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:12,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:12,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:12,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:12,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:12,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:13,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:13,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:13,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:13,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 841 proven. 841 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:15:13,160 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939147411] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:15:13,160 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:15:13,160 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 68] total 132 [2021-05-02 19:15:13,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494024061] [2021-05-02 19:15:13,160 INFO L460 AbstractCegarLoop]: Interpolant automaton has 132 states [2021-05-02 19:15:13,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:15:13,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2021-05-02 19:15:13,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3117, Invalid=14175, Unknown=0, NotChecked=0, Total=17292 [2021-05-02 19:15:13,162 INFO L87 Difference]: Start difference. First operand 157 states and 161 transitions. Second operand has 132 states, 132 states have (on average 1.9848484848484849) internal successors, (262), 131 states have internal predecessors, (262), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:15:23,717 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2021-05-02 19:15:23,962 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2021-05-02 19:15:24,234 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2021-05-02 19:15:25,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:15:25,246 INFO L93 Difference]: Finished difference Result 167 states and 172 transitions. [2021-05-02 19:15:25,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-05-02 19:15:25,250 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 132 states have (on average 1.9848484848484849) internal successors, (262), 131 states have internal predecessors, (262), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 145 [2021-05-02 19:15:25,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:15:25,250 INFO L225 Difference]: With dead ends: 167 [2021-05-02 19:15:25,250 INFO L226 Difference]: Without dead ends: 164 [2021-05-02 19:15:25,252 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 84 SyntacticMatches, 2 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16239 ImplicationChecksByTransitivity, 18386.7ms TimeCoverageRelationStatistics Valid=6392, Invalid=33408, Unknown=0, NotChecked=0, Total=39800 [2021-05-02 19:15:25,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-05-02 19:15:25,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 160. [2021-05-02 19:15:25,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 148 states have (on average 1.0405405405405406) internal successors, (154), 150 states have internal predecessors, (154), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:15:25,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 165 transitions. [2021-05-02 19:15:25,254 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 165 transitions. Word has length 145 [2021-05-02 19:15:25,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:15:25,254 INFO L480 AbstractCegarLoop]: Abstraction has 160 states and 165 transitions. [2021-05-02 19:15:25,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 132 states, 132 states have (on average 1.9848484848484849) internal successors, (262), 131 states have internal predecessors, (262), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:15:25,254 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 165 transitions. [2021-05-02 19:15:25,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-05-02 19:15:25,254 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:15:25,254 INFO L523 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:15:25,456 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable224 [2021-05-02 19:15:25,456 INFO L428 AbstractCegarLoop]: === Iteration 118 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:15:25,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:15:25,456 INFO L82 PathProgramCache]: Analyzing trace with hash -230222854, now seen corresponding path program 56 times [2021-05-02 19:15:25,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:15:25,456 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772632669] [2021-05-02 19:15:25,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:15:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:15:25,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:15:25,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:15:25,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:15:25,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:15:27,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-05-02 19:15:27,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:15:28,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 841 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:15:28,730 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:15:28,730 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772632669] [2021-05-02 19:15:28,730 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772632669] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:15:28,730 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180014801] [2021-05-02 19:15:28,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:15:28,780 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 19:15:28,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:15:28,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 66 conjunts are in the unsatisfiable core [2021-05-02 19:15:28,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:15:29,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:29,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:29,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:29,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:29,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:29,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:29,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:29,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:29,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:29,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:29,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:29,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:29,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:29,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:29,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:29,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:29,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:29,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:30,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:30,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:30,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:30,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:30,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:30,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:30,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:30,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:30,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:30,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:30,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:30,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:30,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:30,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:30,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:30,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:31,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:31,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:31,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:31,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:31,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:31,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:31,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:31,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:31,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:31,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:31,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:31,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:31,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:31,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:32,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:32,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:32,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:32,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:32,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:32,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:32,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:32,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:32,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:32,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:32,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:32,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:32,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:32,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:32,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:32,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:32,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:32,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:33,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:33,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:33,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:33,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:33,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:33,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:33,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:33,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:33,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:33,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:33,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:33,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:33,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:33,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:33,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:33,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:33,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:33,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:33,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:33,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:33,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:33,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:33,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:33,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:33,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:33,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:33,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:33,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:34,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:34,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:34,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:34,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:34,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:34,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:34,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:34,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:34,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:34,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:34,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:34,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:34,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:34,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:34,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:34,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:34,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:34,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:35,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:35,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:35,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:35,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:35,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:35,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:35,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:35,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:35,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:35,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:35,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:35,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:35,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:36,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:36,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:36,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:36,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 841 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:15:36,045 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180014801] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:15:36,045 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:15:36,045 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 67] total 132 [2021-05-02 19:15:36,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461984367] [2021-05-02 19:15:36,046 INFO L460 AbstractCegarLoop]: Interpolant automaton has 132 states [2021-05-02 19:15:36,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:15:36,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2021-05-02 19:15:36,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3119, Invalid=14173, Unknown=0, NotChecked=0, Total=17292 [2021-05-02 19:15:36,047 INFO L87 Difference]: Start difference. First operand 160 states and 165 transitions. Second operand has 132 states, 132 states have (on average 2.015151515151515) internal successors, (266), 131 states have internal predecessors, (266), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:15:46,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:15:46,632 INFO L93 Difference]: Finished difference Result 169 states and 174 transitions. [2021-05-02 19:15:46,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-05-02 19:15:46,636 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 132 states have (on average 2.015151515151515) internal successors, (266), 131 states have internal predecessors, (266), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 147 [2021-05-02 19:15:46,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:15:46,637 INFO L225 Difference]: With dead ends: 169 [2021-05-02 19:15:46,637 INFO L226 Difference]: Without dead ends: 163 [2021-05-02 19:15:46,638 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 87 SyntacticMatches, 2 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16918 ImplicationChecksByTransitivity, 16260.3ms TimeCoverageRelationStatistics Valid=6332, Invalid=32280, Unknown=0, NotChecked=0, Total=38612 [2021-05-02 19:15:46,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-05-02 19:15:46,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 159. [2021-05-02 19:15:46,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 147 states have (on average 1.034013605442177) internal successors, (152), 149 states have internal predecessors, (152), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:15:46,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 163 transitions. [2021-05-02 19:15:46,640 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 163 transitions. Word has length 147 [2021-05-02 19:15:46,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:15:46,640 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 163 transitions. [2021-05-02 19:15:46,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 132 states, 132 states have (on average 2.015151515151515) internal successors, (266), 131 states have internal predecessors, (266), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:15:46,640 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 163 transitions. [2021-05-02 19:15:46,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-05-02 19:15:46,641 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:15:46,641 INFO L523 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:15:46,844 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable226 [2021-05-02 19:15:46,845 INFO L428 AbstractCegarLoop]: === Iteration 119 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:15:46,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:15:46,845 INFO L82 PathProgramCache]: Analyzing trace with hash -529678481, now seen corresponding path program 56 times [2021-05-02 19:15:46,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:15:46,845 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418611846] [2021-05-02 19:15:46,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:15:46,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:15:46,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:15:46,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:15:46,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:15:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:15:48,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-05-02 19:15:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:15:52,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 841 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:15:52,594 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:15:52,594 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418611846] [2021-05-02 19:15:52,594 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418611846] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:15:52,594 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234633137] [2021-05-02 19:15:52,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:15:52,644 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 19:15:52,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:15:52,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 66 conjunts are in the unsatisfiable core [2021-05-02 19:15:52,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:15:52,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:52,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:52,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:52,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:52,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:52,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:52,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:52,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:53,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:53,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:53,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:53,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:53,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:53,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:53,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:53,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:53,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:53,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:53,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:53,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:53,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:53,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:53,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:53,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:53,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:53,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:53,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:53,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:53,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:53,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:53,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:53,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:54,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:54,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:54,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:54,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:54,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:54,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:54,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:54,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:54,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:54,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:54,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:54,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:54,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:54,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:54,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:54,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:54,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:54,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:54,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:54,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:55,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:55,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:55,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:55,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:55,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:55,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:55,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:55,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:55,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:55,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:55,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:55,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:55,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:55,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:55,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:55,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:55,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:55,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:56,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:56,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:56,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:56,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:56,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:56,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:56,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:56,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:56,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:56,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:56,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:56,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:56,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:56,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:57,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:57,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:57,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:57,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:57,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:57,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:57,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:57,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:57,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:57,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:57,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:57,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:57,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:57,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:58,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:58,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:58,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:58,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:58,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:58,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:58,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:58,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:58,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:58,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:58,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:58,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:59,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:59,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:59,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:59,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:59,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:59,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:59,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:59,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:59,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:15:59,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:00,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:00,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:00,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:00,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:00,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:00,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 841 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:16:00,273 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234633137] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:16:00,273 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:16:00,273 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 67] total 132 [2021-05-02 19:16:00,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354197880] [2021-05-02 19:16:00,273 INFO L460 AbstractCegarLoop]: Interpolant automaton has 132 states [2021-05-02 19:16:00,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:16:00,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2021-05-02 19:16:00,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3119, Invalid=14173, Unknown=0, NotChecked=0, Total=17292 [2021-05-02 19:16:00,274 INFO L87 Difference]: Start difference. First operand 159 states and 163 transitions. Second operand has 132 states, 132 states have (on average 2.015151515151515) internal successors, (266), 131 states have internal predecessors, (266), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:16:12,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:16:12,825 INFO L93 Difference]: Finished difference Result 163 states and 166 transitions. [2021-05-02 19:16:12,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-05-02 19:16:12,828 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 132 states have (on average 2.015151515151515) internal successors, (266), 131 states have internal predecessors, (266), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 147 [2021-05-02 19:16:12,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:16:12,829 INFO L225 Difference]: With dead ends: 163 [2021-05-02 19:16:12,829 INFO L226 Difference]: Without dead ends: 159 [2021-05-02 19:16:12,831 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 87 SyntacticMatches, 2 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15869 ImplicationChecksByTransitivity, 18922.8ms TimeCoverageRelationStatistics Valid=6332, Invalid=32280, Unknown=0, NotChecked=0, Total=38612 [2021-05-02 19:16:12,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-05-02 19:16:12,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 158. [2021-05-02 19:16:12,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 146 states have (on average 1.0273972602739727) internal successors, (150), 148 states have internal predecessors, (150), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:16:12,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 161 transitions. [2021-05-02 19:16:12,832 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 161 transitions. Word has length 147 [2021-05-02 19:16:12,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:16:12,832 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 161 transitions. [2021-05-02 19:16:12,832 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 132 states, 132 states have (on average 2.015151515151515) internal successors, (266), 131 states have internal predecessors, (266), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:16:12,832 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 161 transitions. [2021-05-02 19:16:12,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-05-02 19:16:12,833 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:16:12,833 INFO L523 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:16:13,033 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228,115 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:16:13,033 INFO L428 AbstractCegarLoop]: === Iteration 120 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:16:13,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:16:13,034 INFO L82 PathProgramCache]: Analyzing trace with hash -170976491, now seen corresponding path program 57 times [2021-05-02 19:16:13,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:16:13,034 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235653266] [2021-05-02 19:16:13,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:16:13,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:16:13,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:16:13,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:16:13,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:16:13,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:16:14,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-05-02 19:16:14,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:16:16,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 900 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:16:16,617 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:16:16,617 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235653266] [2021-05-02 19:16:16,617 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235653266] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:16:16,617 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741200391] [2021-05-02 19:16:16,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:16:16,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 31 check-sat command(s) [2021-05-02 19:16:16,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:16:16,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 69 conjunts are in the unsatisfiable core [2021-05-02 19:16:16,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:16:16,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:16,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:16,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:16,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:17,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:17,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:17,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:17,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:17,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:17,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:17,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:17,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:17,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:17,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:17,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:17,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:17,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:17,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:17,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:17,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:18,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:18,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:18,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:18,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:18,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:18,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:18,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:18,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:18,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:18,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:18,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:18,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:18,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:18,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:18,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:18,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:19,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:19,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:19,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:19,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:19,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:19,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:19,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:19,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:19,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:19,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:19,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:19,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:19,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:19,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:20,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:20,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:20,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:20,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:20,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:20,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:20,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:20,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:20,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:20,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:21,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:21,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:21,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:21,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:21,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:21,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:21,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:21,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:21,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:21,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:21,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:21,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:21,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:21,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:21,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:21,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:21,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:21,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:21,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:21,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:21,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:21,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:21,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:21,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:21,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:21,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:21,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:21,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:21,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:21,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:21,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:22,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:22,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:22,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:22,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:22,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:22,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:22,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:22,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:22,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:22,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:22,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:22,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:22,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:22,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:22,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:22,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:22,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:22,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:22,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:22,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:22,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:22,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:22,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:23,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:23,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:23,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:23,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:23,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:23,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:23,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:23,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:23,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:23,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:23,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:23,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:23,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:23,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:23,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:23,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:23,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:23,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:23,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 900 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:16:23,846 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741200391] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:16:23,847 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:16:23,847 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 70] total 136 [2021-05-02 19:16:23,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857647821] [2021-05-02 19:16:23,847 INFO L460 AbstractCegarLoop]: Interpolant automaton has 136 states [2021-05-02 19:16:23,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:16:23,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2021-05-02 19:16:23,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3313, Invalid=15047, Unknown=0, NotChecked=0, Total=18360 [2021-05-02 19:16:23,848 INFO L87 Difference]: Start difference. First operand 158 states and 161 transitions. Second operand has 136 states, 136 states have (on average 1.9852941176470589) internal successors, (270), 135 states have internal predecessors, (270), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:16:27,973 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2021-05-02 19:16:28,216 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2021-05-02 19:16:34,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:16:34,097 INFO L93 Difference]: Finished difference Result 176 states and 183 transitions. [2021-05-02 19:16:34,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-05-02 19:16:34,100 INFO L78 Accepts]: Start accepts. Automaton has has 136 states, 136 states have (on average 1.9852941176470589) internal successors, (270), 135 states have internal predecessors, (270), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 149 [2021-05-02 19:16:34,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:16:34,100 INFO L225 Difference]: With dead ends: 176 [2021-05-02 19:16:34,100 INFO L226 Difference]: Without dead ends: 171 [2021-05-02 19:16:34,102 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 86 SyntacticMatches, 2 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18173 ImplicationChecksByTransitivity, 16304.2ms TimeCoverageRelationStatistics Valid=6788, Invalid=35442, Unknown=0, NotChecked=0, Total=42230 [2021-05-02 19:16:34,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-05-02 19:16:34,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 161. [2021-05-02 19:16:34,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 149 states have (on average 1.0335570469798658) internal successors, (154), 151 states have internal predecessors, (154), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:16:34,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 165 transitions. [2021-05-02 19:16:34,103 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 165 transitions. Word has length 149 [2021-05-02 19:16:34,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:16:34,103 INFO L480 AbstractCegarLoop]: Abstraction has 161 states and 165 transitions. [2021-05-02 19:16:34,103 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 136 states, 136 states have (on average 1.9852941176470589) internal successors, (270), 135 states have internal predecessors, (270), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:16:34,103 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 165 transitions. [2021-05-02 19:16:34,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-05-02 19:16:34,104 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:16:34,104 INFO L523 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:16:34,319 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230,116 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:16:34,319 INFO L428 AbstractCegarLoop]: === Iteration 121 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:16:34,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:16:34,320 INFO L82 PathProgramCache]: Analyzing trace with hash 2055994803, now seen corresponding path program 57 times [2021-05-02 19:16:34,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:16:34,320 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362107867] [2021-05-02 19:16:34,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:16:34,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:16:34,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:16:34,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:16:34,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:16:34,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:16:36,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-05-02 19:16:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:16:39,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 900 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:16:39,831 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:16:39,831 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362107867] [2021-05-02 19:16:39,831 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362107867] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:16:39,831 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368531346] [2021-05-02 19:16:39,831 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:16:39,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 31 check-sat command(s) [2021-05-02 19:16:39,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:16:39,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 69 conjunts are in the unsatisfiable core [2021-05-02 19:16:39,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:16:40,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:40,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:40,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:40,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:40,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:40,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:40,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:40,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:40,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:40,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:40,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:40,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:40,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:40,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:40,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:40,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:40,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:40,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:40,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:40,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:40,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:40,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:40,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:40,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:40,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:40,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:40,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:40,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:40,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:40,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:40,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:40,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:41,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:41,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:41,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:41,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:41,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:41,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:41,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:41,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:41,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:41,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:41,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:41,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:41,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:41,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:41,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:41,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:41,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:41,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:41,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:41,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:41,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:41,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:41,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:41,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:42,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:42,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:42,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:42,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:42,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:42,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:42,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:42,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:42,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:42,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:42,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:42,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:42,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:42,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:42,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:42,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:42,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:42,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:42,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:42,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:42,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:42,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:43,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:43,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:43,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:43,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:43,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:43,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:43,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:43,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:43,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:43,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:43,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:43,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:43,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:43,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:43,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:43,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:44,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:44,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:44,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:44,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:44,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:44,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:44,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:44,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:44,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:44,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:44,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:44,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:44,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:44,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:45,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:45,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:45,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:45,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:45,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:45,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:45,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:45,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:45,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:45,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:45,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:45,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:46,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:46,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:46,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:46,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:46,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:46,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:46,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:46,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:46,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:16:46,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 900 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:16:46,905 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368531346] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:16:46,905 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:16:46,905 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 70] total 136 [2021-05-02 19:16:46,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623138117] [2021-05-02 19:16:46,905 INFO L460 AbstractCegarLoop]: Interpolant automaton has 136 states [2021-05-02 19:16:46,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:16:46,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2021-05-02 19:16:46,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3313, Invalid=15047, Unknown=0, NotChecked=0, Total=18360 [2021-05-02 19:16:46,907 INFO L87 Difference]: Start difference. First operand 161 states and 165 transitions. Second operand has 136 states, 136 states have (on average 1.9852941176470589) internal successors, (270), 135 states have internal predecessors, (270), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:16:55,796 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2021-05-02 19:16:56,037 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2021-05-02 19:16:56,296 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2021-05-02 19:16:57,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:16:57,094 INFO L93 Difference]: Finished difference Result 171 states and 176 transitions. [2021-05-02 19:16:57,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-05-02 19:16:57,097 INFO L78 Accepts]: Start accepts. Automaton has has 136 states, 136 states have (on average 1.9852941176470589) internal successors, (270), 135 states have internal predecessors, (270), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 149 [2021-05-02 19:16:57,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:16:57,098 INFO L225 Difference]: With dead ends: 171 [2021-05-02 19:16:57,098 INFO L226 Difference]: Without dead ends: 168 [2021-05-02 19:16:57,100 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 86 SyntacticMatches, 2 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17275 ImplicationChecksByTransitivity, 18234.1ms TimeCoverageRelationStatistics Valid=6788, Invalid=35442, Unknown=0, NotChecked=0, Total=42230 [2021-05-02 19:16:57,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-05-02 19:16:57,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 164. [2021-05-02 19:16:57,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 152 states have (on average 1.0394736842105263) internal successors, (158), 154 states have internal predecessors, (158), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:16:57,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 169 transitions. [2021-05-02 19:16:57,101 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 169 transitions. Word has length 149 [2021-05-02 19:16:57,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:16:57,101 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 169 transitions. [2021-05-02 19:16:57,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 136 states, 136 states have (on average 1.9852941176470589) internal successors, (270), 135 states have internal predecessors, (270), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:16:57,101 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 169 transitions. [2021-05-02 19:16:57,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-05-02 19:16:57,102 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:16:57,102 INFO L523 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:16:57,303 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232,117 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:16:57,303 INFO L428 AbstractCegarLoop]: === Iteration 122 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:16:57,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:16:57,303 INFO L82 PathProgramCache]: Analyzing trace with hash -2114511847, now seen corresponding path program 58 times [2021-05-02 19:16:57,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:16:57,303 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182861313] [2021-05-02 19:16:57,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:16:57,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:16:57,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:16:57,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:16:57,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:16:57,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:16:59,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-05-02 19:16:59,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:17:01,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1861 backedges. 900 proven. 961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:17:01,150 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:17:01,150 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182861313] [2021-05-02 19:17:01,150 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182861313] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:17:01,150 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53511949] [2021-05-02 19:17:01,150 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:17:01,199 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 19:17:01,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:17:01,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 68 conjunts are in the unsatisfiable core [2021-05-02 19:17:01,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:17:01,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:01,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:01,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:01,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:01,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:01,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:01,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:01,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:01,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:01,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:01,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:01,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:01,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:01,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:02,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:02,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:02,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:02,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:02,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:02,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:02,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:02,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:02,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:02,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:02,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:02,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:02,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:02,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:02,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:02,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:03,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:03,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:03,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:03,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:03,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:03,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:03,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:03,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:03,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:03,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:03,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:03,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:04,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:04,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:04,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:04,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:04,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:04,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:04,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:04,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:04,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:04,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:04,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:04,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:04,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:04,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:05,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:05,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:05,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:05,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:05,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:05,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:05,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:05,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:05,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:05,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:05,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:05,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:05,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:05,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:05,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:05,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:05,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:05,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:05,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:05,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:05,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:05,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:05,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:05,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:05,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:05,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:06,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:06,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:06,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:06,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:06,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:06,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:06,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:06,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:06,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:06,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:06,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:06,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:06,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:06,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:06,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:06,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:06,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:06,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:06,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:06,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:06,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:06,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:06,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:06,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:06,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:06,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:06,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:06,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:07,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:07,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:07,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:07,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:07,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:07,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:07,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:07,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:07,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:07,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:07,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:07,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:07,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:07,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:07,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:07,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:07,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:07,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:07,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:08,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:08,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:08,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:08,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1861 backedges. 900 proven. 961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:17:08,071 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53511949] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:17:08,071 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:17:08,071 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 69] total 136 [2021-05-02 19:17:08,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725795926] [2021-05-02 19:17:08,071 INFO L460 AbstractCegarLoop]: Interpolant automaton has 136 states [2021-05-02 19:17:08,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:17:08,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2021-05-02 19:17:08,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3315, Invalid=15045, Unknown=0, NotChecked=0, Total=18360 [2021-05-02 19:17:08,073 INFO L87 Difference]: Start difference. First operand 164 states and 169 transitions. Second operand has 136 states, 136 states have (on average 2.014705882352941) internal successors, (274), 135 states have internal predecessors, (274), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:17:19,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:17:19,682 INFO L93 Difference]: Finished difference Result 173 states and 178 transitions. [2021-05-02 19:17:19,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-05-02 19:17:19,686 INFO L78 Accepts]: Start accepts. Automaton has has 136 states, 136 states have (on average 2.014705882352941) internal successors, (274), 135 states have internal predecessors, (274), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 151 [2021-05-02 19:17:19,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:17:19,686 INFO L225 Difference]: With dead ends: 173 [2021-05-02 19:17:19,686 INFO L226 Difference]: Without dead ends: 167 [2021-05-02 19:17:19,688 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 89 SyntacticMatches, 2 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18008 ImplicationChecksByTransitivity, 15783.6ms TimeCoverageRelationStatistics Valid=6727, Invalid=34279, Unknown=0, NotChecked=0, Total=41006 [2021-05-02 19:17:19,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-05-02 19:17:19,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 163. [2021-05-02 19:17:19,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 151 states have (on average 1.033112582781457) internal successors, (156), 153 states have internal predecessors, (156), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:17:19,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 167 transitions. [2021-05-02 19:17:19,689 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 167 transitions. Word has length 151 [2021-05-02 19:17:19,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:17:19,689 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 167 transitions. [2021-05-02 19:17:19,689 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 136 states, 136 states have (on average 2.014705882352941) internal successors, (274), 135 states have internal predecessors, (274), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:17:19,689 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 167 transitions. [2021-05-02 19:17:19,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-05-02 19:17:19,690 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:17:19,690 INFO L523 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:17:19,905 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable234 [2021-05-02 19:17:19,905 INFO L428 AbstractCegarLoop]: === Iteration 123 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:17:19,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:17:19,905 INFO L82 PathProgramCache]: Analyzing trace with hash -2139063666, now seen corresponding path program 58 times [2021-05-02 19:17:19,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:17:19,905 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636811169] [2021-05-02 19:17:19,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:17:19,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:17:20,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:17:20,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:17:20,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:17:20,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:17:21,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-05-02 19:17:21,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:17:25,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1861 backedges. 900 proven. 961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:17:25,161 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:17:25,161 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636811169] [2021-05-02 19:17:25,161 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636811169] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:17:25,161 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463117707] [2021-05-02 19:17:25,161 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:17:25,210 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 19:17:25,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:17:25,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 68 conjunts are in the unsatisfiable core [2021-05-02 19:17:25,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:17:25,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:25,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:25,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:25,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:25,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:25,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:25,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:25,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:25,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:25,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:25,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:25,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:25,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:25,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:25,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:25,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:25,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:25,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:25,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:25,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:25,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:25,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:25,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:25,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:26,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:26,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:26,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:26,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:26,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:26,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:26,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:26,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:26,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:26,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:26,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:26,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:26,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:26,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:26,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:26,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:26,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:26,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:26,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:26,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:26,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:26,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:26,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:26,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:27,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:27,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:27,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:27,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:27,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:27,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:27,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:27,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:27,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:27,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:27,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:27,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:27,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:27,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:27,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:27,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:27,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:27,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:27,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:27,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:28,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:28,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:28,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:28,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:28,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:28,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:28,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:28,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:28,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:28,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:28,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:28,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:28,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:28,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:28,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:28,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:28,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:28,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:29,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:29,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:29,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:29,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:29,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:29,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:29,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:29,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:29,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:29,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:29,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:29,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:29,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:29,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:30,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:30,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:30,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:30,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:30,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:30,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:30,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:30,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:30,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:30,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:30,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:30,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:31,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:31,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:31,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:31,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:31,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:31,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:31,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:31,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:31,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:31,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:31,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:31,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:32,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:32,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:32,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:32,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:32,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:32,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1861 backedges. 900 proven. 961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:17:32,312 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463117707] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:17:32,312 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:17:32,313 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 69] total 136 [2021-05-02 19:17:32,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546336523] [2021-05-02 19:17:32,313 INFO L460 AbstractCegarLoop]: Interpolant automaton has 136 states [2021-05-02 19:17:32,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:17:32,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2021-05-02 19:17:32,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3315, Invalid=15045, Unknown=0, NotChecked=0, Total=18360 [2021-05-02 19:17:32,314 INFO L87 Difference]: Start difference. First operand 163 states and 167 transitions. Second operand has 136 states, 136 states have (on average 2.014705882352941) internal successors, (274), 135 states have internal predecessors, (274), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:17:41,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:17:41,986 INFO L93 Difference]: Finished difference Result 167 states and 170 transitions. [2021-05-02 19:17:41,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-05-02 19:17:41,989 INFO L78 Accepts]: Start accepts. Automaton has has 136 states, 136 states have (on average 2.014705882352941) internal successors, (274), 135 states have internal predecessors, (274), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 151 [2021-05-02 19:17:41,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:17:41,990 INFO L225 Difference]: With dead ends: 167 [2021-05-02 19:17:41,990 INFO L226 Difference]: Without dead ends: 163 [2021-05-02 19:17:41,991 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 89 SyntacticMatches, 2 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16893 ImplicationChecksByTransitivity, 17596.8ms TimeCoverageRelationStatistics Valid=6727, Invalid=34279, Unknown=0, NotChecked=0, Total=41006 [2021-05-02 19:17:41,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-05-02 19:17:41,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 162. [2021-05-02 19:17:41,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 150 states have (on average 1.0266666666666666) internal successors, (154), 152 states have internal predecessors, (154), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:17:41,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 165 transitions. [2021-05-02 19:17:41,993 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 165 transitions. Word has length 151 [2021-05-02 19:17:41,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:17:41,993 INFO L480 AbstractCegarLoop]: Abstraction has 162 states and 165 transitions. [2021-05-02 19:17:41,993 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 136 states, 136 states have (on average 2.014705882352941) internal successors, (274), 135 states have internal predecessors, (274), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:17:41,993 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 165 transitions. [2021-05-02 19:17:41,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-05-02 19:17:41,993 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:17:41,994 INFO L523 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:17:42,194 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable236 [2021-05-02 19:17:42,194 INFO L428 AbstractCegarLoop]: === Iteration 124 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:17:42,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:17:42,194 INFO L82 PathProgramCache]: Analyzing trace with hash -601912716, now seen corresponding path program 59 times [2021-05-02 19:17:42,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:17:42,195 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7796177] [2021-05-02 19:17:42,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:17:42,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:17:42,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:17:42,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:17:42,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:17:42,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:17:44,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-05-02 19:17:44,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:17:46,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 961 proven. 961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:17:46,204 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:17:46,204 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7796177] [2021-05-02 19:17:46,204 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7796177] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:17:46,204 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717475796] [2021-05-02 19:17:46,204 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:17:46,260 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2021-05-02 19:17:46,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:17:46,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 71 conjunts are in the unsatisfiable core [2021-05-02 19:17:46,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:17:46,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:46,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:46,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:46,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:46,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:46,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:46,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:46,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:46,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:46,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:47,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:47,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:47,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:47,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:47,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:47,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:47,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:47,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:47,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:47,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:47,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:47,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:47,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:47,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:47,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:47,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:48,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:48,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:48,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:48,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:48,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:48,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:48,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:48,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:48,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:48,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:48,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:48,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:49,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:49,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:49,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:49,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:49,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:49,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:49,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:49,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:49,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:49,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:49,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:49,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:50,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:50,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:50,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:50,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:50,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:50,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:50,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:50,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:50,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:50,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:50,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:50,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:51,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:51,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:51,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:51,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:51,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:51,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:51,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:51,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:51,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:51,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:51,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:51,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:51,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:51,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:51,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:51,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:51,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:51,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:51,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:51,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:51,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:51,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:51,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:51,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:51,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:51,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:52,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:52,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:52,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:52,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:52,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:52,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:52,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:52,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:52,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:52,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:52,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:52,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:52,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:52,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:52,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:52,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:52,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:52,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:52,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:52,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:52,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:52,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:53,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:53,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:53,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:53,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:53,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:53,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:53,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:53,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:53,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:53,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:53,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:53,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:53,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:53,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:53,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:53,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:53,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:53,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:53,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:53,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:54,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:54,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:54,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:54,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:54,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:54,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:17:54,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 961 proven. 961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:17:54,299 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717475796] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:17:54,299 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:17:54,299 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 72] total 140 [2021-05-02 19:17:54,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219140195] [2021-05-02 19:17:54,299 INFO L460 AbstractCegarLoop]: Interpolant automaton has 140 states [2021-05-02 19:17:54,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:17:54,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2021-05-02 19:17:54,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3515, Invalid=15945, Unknown=0, NotChecked=0, Total=19460 [2021-05-02 19:17:54,301 INFO L87 Difference]: Start difference. First operand 162 states and 165 transitions. Second operand has 140 states, 140 states have (on average 1.9857142857142858) internal successors, (278), 139 states have internal predecessors, (278), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:17:58,911 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2021-05-02 19:17:59,191 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2021-05-02 19:17:59,463 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2021-05-02 19:18:04,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:18:04,981 INFO L93 Difference]: Finished difference Result 180 states and 187 transitions. [2021-05-02 19:18:04,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-05-02 19:18:04,984 INFO L78 Accepts]: Start accepts. Automaton has has 140 states, 140 states have (on average 1.9857142857142858) internal successors, (278), 139 states have internal predecessors, (278), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 153 [2021-05-02 19:18:04,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:18:04,985 INFO L225 Difference]: With dead ends: 180 [2021-05-02 19:18:04,985 INFO L226 Difference]: Without dead ends: 175 [2021-05-02 19:18:04,987 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 88 SyntacticMatches, 2 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19302 ImplicationChecksByTransitivity, 19196.2ms TimeCoverageRelationStatistics Valid=7196, Invalid=37536, Unknown=0, NotChecked=0, Total=44732 [2021-05-02 19:18:04,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-05-02 19:18:04,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 165. [2021-05-02 19:18:04,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 153 states have (on average 1.0326797385620916) internal successors, (158), 155 states have internal predecessors, (158), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 19:18:04,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 169 transitions. [2021-05-02 19:18:04,989 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 169 transitions. Word has length 153 [2021-05-02 19:18:04,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:18:04,989 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 169 transitions. [2021-05-02 19:18:04,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 140 states, 140 states have (on average 1.9857142857142858) internal successors, (278), 139 states have internal predecessors, (278), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 19:18:04,989 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 169 transitions. [2021-05-02 19:18:04,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-05-02 19:18:04,989 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:18:04,989 INFO L523 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:18:05,206 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable238 [2021-05-02 19:18:05,206 INFO L428 AbstractCegarLoop]: === Iteration 125 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:18:05,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:18:05,207 INFO L82 PathProgramCache]: Analyzing trace with hash 634290514, now seen corresponding path program 59 times [2021-05-02 19:18:05,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:18:05,207 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356422311] [2021-05-02 19:18:05,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:18:05,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:18:05,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:18:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:18:05,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 19:18:05,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:18:07,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-05-02 19:18:07,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:18:12,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 961 proven. 961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:18:12,649 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:18:12,649 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356422311] [2021-05-02 19:18:12,649 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356422311] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:18:12,649 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265708960] [2021-05-02 19:18:12,649 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:18:12,712 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2021-05-02 19:18:12,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:18:12,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 71 conjunts are in the unsatisfiable core [2021-05-02 19:18:12,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:18:12,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:12,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:12,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:12,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:12,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:13,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:13,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:13,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:13,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:13,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:13,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:13,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:13,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:13,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:13,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:13,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:13,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:13,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:13,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:13,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:13,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:13,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:13,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:13,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:13,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:13,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:14,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:14,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:14,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:14,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:14,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:14,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:14,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:14,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:14,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:14,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:14,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:14,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:14,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:14,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:14,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:14,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:14,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:14,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:15,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:15,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:15,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:15,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:15,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:15,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:15,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:15,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:15,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:15,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:15,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:15,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:15,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:15,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:16,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:16,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:16,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:16,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:16,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:16,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:16,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:16,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:16,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:16,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:16,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:16,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:16,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:16,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:16,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:16,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:17,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:17,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:17,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:17,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:17,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:17,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:17,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:18:17,569 WARN L159 QuantifierPusher]: Ignoring assumption.