/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/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-acceleration/functions_1-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 12:06:56,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 12:06:56,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 12:06:56,700 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 12:06:56,700 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 12:06:56,702 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 12:06:56,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 12:06:56,708 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 12:06:56,709 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 12:06:56,712 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 12:06:56,713 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 12:06:56,714 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 12:06:56,714 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 12:06:56,716 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 12:06:56,717 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 12:06:56,718 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 12:06:56,719 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 12:06:56,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 12:06:56,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 12:06:56,725 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 12:06:56,726 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 12:06:56,727 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 12:06:56,729 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 12:06:56,730 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 12:06:56,735 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-02 12:06:56,735 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-02 12:06:56,735 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-02 12:06:56,736 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-02 12:06:56,736 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-02 12:06:56,737 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-02 12:06:56,737 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-02 12:06:56,737 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-02 12:06:56,738 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-02 12:06:56,739 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-02 12:06:56,739 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-02 12:06:56,740 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-02 12:06:56,740 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-02 12:06:56,740 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-02 12:06:56,740 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 12:06:56,741 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 12:06:56,741 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 12:06:56,742 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-05-02 12:06:56,769 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 12:06:56,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 12:06:56,771 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-02 12:06:56,771 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-02 12:06:56,771 INFO L138 SettingsManager]: * Use SBE=true [2021-05-02 12:06:56,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 12:06:56,772 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 12:06:56,772 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 12:06:56,772 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 12:06:56,772 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 12:06:56,773 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 12:06:56,773 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 12:06:56,773 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 12:06:56,773 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 12:06:56,773 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 12:06:56,773 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 12:06:56,773 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 12:06:56,773 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 12:06:56,774 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 12:06:56,774 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 12:06:56,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 12:06:56,774 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 12:06:56,774 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-02 12:06:56,774 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-02 12:06:56,774 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 12:06:56,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-02 12:06:56,775 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 12:06:56,775 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-02 12:06:56,775 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 12:06:57,036 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 12:06:57,056 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 12:06:57,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 12:06:57,058 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 12:06:57,059 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 12:06:57,060 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/functions_1-2.c [2021-05-02 12:06:57,112 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9a0f5bb6/a4c7d9d5ca3941249229b6db0a821251/FLAG353107bdb [2021-05-02 12:06:57,438 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 12:06:57,438 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/functions_1-2.c [2021-05-02 12:06:57,442 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9a0f5bb6/a4c7d9d5ca3941249229b6db0a821251/FLAG353107bdb [2021-05-02 12:06:57,885 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9a0f5bb6/a4c7d9d5ca3941249229b6db0a821251 [2021-05-02 12:06:57,887 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 12:06:57,888 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 12:06:57,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 12:06:57,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 12:06:57,894 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 12:06:57,894 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 12:06:57" (1/1) ... [2021-05-02 12:06:57,895 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65c2537f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:06:57, skipping insertion in model container [2021-05-02 12:06:57,896 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 12:06:57" (1/1) ... [2021-05-02 12:06:57,900 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 12:06:57,909 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 12:06:57,984 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/functions_1-2.c[325,338] [2021-05-02 12:06:57,989 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 12:06:57,994 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 12:06:58,001 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/functions_1-2.c[325,338] [2021-05-02 12:06:58,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 12:06:58,015 INFO L208 MainTranslator]: Completed translation [2021-05-02 12:06:58,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:06:58 WrapperNode [2021-05-02 12:06:58,016 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 12:06:58,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 12:06:58,017 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 12:06:58,017 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 12:06:58,023 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:06:58" (1/1) ... [2021-05-02 12:06:58,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:06:58" (1/1) ... [2021-05-02 12:06:58,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:06:58" (1/1) ... [2021-05-02 12:06:58,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:06:58" (1/1) ... [2021-05-02 12:06:58,065 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:06:58" (1/1) ... [2021-05-02 12:06:58,069 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:06:58" (1/1) ... [2021-05-02 12:06:58,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:06:58" (1/1) ... [2021-05-02 12:06:58,080 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 12:06:58,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 12:06:58,081 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 12:06:58,081 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 12:06:58,081 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:06:58" (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 12:06:58,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 12:06:58,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 12:06:58,127 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 12:06:58,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 12:06:58,127 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-05-02 12:06:58,127 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 12:06:58,127 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 12:06:58,127 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 12:06:58,127 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 12:06:58,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 12:06:58,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 12:06:58,128 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-05-02 12:06:58,128 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 12:06:58,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 12:06:58,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 12:06:58,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 12:06:58,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 12:06:58,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 12:06:58,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 12:06:58,323 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 12:06:58,323 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 12:06:58,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 12:06:58 BoogieIcfgContainer [2021-05-02 12:06:58,324 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 12:06:58,325 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 12:06:58,325 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 12:06:58,327 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 12:06:58,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 12:06:57" (1/3) ... [2021-05-02 12:06:58,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@db9f95e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 12:06:58, skipping insertion in model container [2021-05-02 12:06:58,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:06:58" (2/3) ... [2021-05-02 12:06:58,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@db9f95e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 12:06:58, skipping insertion in model container [2021-05-02 12:06:58,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 12:06:58" (3/3) ... [2021-05-02 12:06:58,329 INFO L111 eAbstractionObserver]: Analyzing ICFG functions_1-2.c [2021-05-02 12:06:58,332 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-02 12:06:58,335 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 12:06:58,345 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 12:06:58,358 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 12:06:58,358 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 12:06:58,358 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-02 12:06:58,359 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 12:06:58,359 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 12:06:58,359 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 12:06:58,359 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 12:06:58,359 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 12:06:58,368 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 12:06:58,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 12:06:58,372 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:06:58,373 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:06:58,373 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:06:58,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:06:58,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1649640916, now seen corresponding path program 1 times [2021-05-02 12:06:58,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:06:58,382 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036791787] [2021-05-02 12:06:58,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:06:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:58,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:06:58,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:58,563 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 12:06:58,563 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:06:58,564 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036791787] [2021-05-02 12:06:58,564 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036791787] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 12:06:58,565 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 12:06:58,565 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 12:06:58,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239299710] [2021-05-02 12:06:58,569 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 12:06:58,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:06:58,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 12:06:58,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 12:06:58,582 INFO L87 Difference]: Start difference. First operand has 23 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:06:58,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:06:58,617 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2021-05-02 12:06:58,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 12:06:58,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-05-02 12:06:58,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:06:58,621 INFO L225 Difference]: With dead ends: 34 [2021-05-02 12:06:58,622 INFO L226 Difference]: Without dead ends: 17 [2021-05-02 12:06:58,623 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 12:06:58,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-05-02 12:06:58,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-05-02 12:06:58,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 12:06:58,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-05-02 12:06:58,645 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 11 [2021-05-02 12:06:58,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:06:58,645 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-05-02 12:06:58,645 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:06:58,645 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-05-02 12:06:58,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 12:06:58,646 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:06:58,646 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:06:58,646 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 12:06:58,646 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:06:58,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:06:58,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1655182042, now seen corresponding path program 1 times [2021-05-02 12:06:58,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:06:58,647 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299982162] [2021-05-02 12:06:58,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:06:58,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:58,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:06:58,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:58,767 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 12:06:58,767 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:06:58,767 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299982162] [2021-05-02 12:06:58,768 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299982162] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 12:06:58,768 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 12:06:58,768 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 12:06:58,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403964061] [2021-05-02 12:06:58,769 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 12:06:58,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:06:58,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 12:06:58,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 12:06:58,770 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:06:58,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:06:58,863 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2021-05-02 12:06:58,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 12:06:58,864 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-05-02 12:06:58,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:06:58,865 INFO L225 Difference]: With dead ends: 25 [2021-05-02 12:06:58,865 INFO L226 Difference]: Without dead ends: 20 [2021-05-02 12:06:58,866 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 12:06:58,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-05-02 12:06:58,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2021-05-02 12:06:58,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 12:06:58,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-05-02 12:06:58,872 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2021-05-02 12:06:58,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:06:58,872 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-05-02 12:06:58,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:06:58,872 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-05-02 12:06:58,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-02 12:06:58,873 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:06:58,873 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:06:58,873 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 12:06:58,873 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:06:58,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:06:58,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1503524740, now seen corresponding path program 1 times [2021-05-02 12:06:58,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:06:58,874 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750897008] [2021-05-02 12:06:58,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:06:58,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:59,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:06:59,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:59,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:06:59,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:59,042 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 12:06:59,042 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:06:59,042 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750897008] [2021-05-02 12:06:59,042 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750897008] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:06:59,042 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42350285] [2021-05-02 12:06:59,042 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 12:06:59,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:59,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-02 12:06:59,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:06:59,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:59,228 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 12:06:59,229 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42350285] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:06:59,230 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:06:59,230 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-05-02 12:06:59,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652662324] [2021-05-02 12:06:59,230 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 12:06:59,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:06:59,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 12:06:59,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-05-02 12:06:59,231 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 12:06:59,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:06:59,387 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2021-05-02 12:06:59,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 12:06:59,388 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2021-05-02 12:06:59,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:06:59,389 INFO L225 Difference]: With dead ends: 28 [2021-05-02 12:06:59,389 INFO L226 Difference]: Without dead ends: 23 [2021-05-02 12:06:59,391 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 138.1ms TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-05-02 12:06:59,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-05-02 12:06:59,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2021-05-02 12:06:59,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 5 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 12:06:59,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-05-02 12:06:59,400 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 17 [2021-05-02 12:06:59,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:06:59,401 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-05-02 12:06:59,401 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 12:06:59,401 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2021-05-02 12:06:59,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-02 12:06:59,402 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:06:59,402 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:06:59,625 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-05-02 12:06:59,625 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:06:59,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:06:59,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1270987934, now seen corresponding path program 2 times [2021-05-02 12:06:59,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:06:59,626 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910182333] [2021-05-02 12:06:59,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:06:59,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:59,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:06:59,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:59,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:06:59,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:59,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:06:59,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:59,784 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-05-02 12:06:59,784 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:06:59,784 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910182333] [2021-05-02 12:06:59,784 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910182333] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:06:59,785 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599094452] [2021-05-02 12:06:59,785 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 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 12:06:59,834 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:06:59,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:06:59,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 23 conjunts are in the unsatisfiable core [2021-05-02 12:06:59,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:06:59,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:59,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:59,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:59,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:59,947 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-05-02 12:06:59,948 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599094452] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:06:59,948 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:06:59,948 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 10 [2021-05-02 12:06:59,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325980901] [2021-05-02 12:06:59,949 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 12:06:59,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:06:59,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 12:06:59,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-05-02 12:06:59,950 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 10 states, 10 states have (on average 1.6) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 12:07:00,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:07:00,174 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2021-05-02 12:07:00,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 12:07:00,174 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 23 [2021-05-02 12:07:00,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:07:00,175 INFO L225 Difference]: With dead ends: 31 [2021-05-02 12:07:00,175 INFO L226 Difference]: Without dead ends: 26 [2021-05-02 12:07:00,176 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 227.5ms TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-05-02 12:07:00,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-05-02 12:07:00,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2021-05-02 12:07:00,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 6 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 12:07:00,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2021-05-02 12:07:00,190 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 23 [2021-05-02 12:07:00,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:07:00,190 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2021-05-02 12:07:00,190 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 12:07:00,190 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2021-05-02 12:07:00,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-02 12:07:00,191 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:07:00,191 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:07:00,396 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:07:00,397 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:07:00,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:07:00,397 INFO L82 PathProgramCache]: Analyzing trace with hash -371085120, now seen corresponding path program 3 times [2021-05-02 12:07:00,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:07:00,398 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637591101] [2021-05-02 12:07:00,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:07:00,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:00,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:07:00,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:00,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:07:00,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:00,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:07:00,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:00,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:07:00,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:00,577 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-02 12:07:00,577 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:07:00,577 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637591101] [2021-05-02 12:07:00,578 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637591101] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:07:00,579 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155030966] [2021-05-02 12:07:00,579 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 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 12:07:00,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-05-02 12:07:00,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:07:00,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-02 12:07:00,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:07:00,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:00,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:00,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:00,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:00,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:00,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:00,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:00,756 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-02 12:07:00,756 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155030966] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:07:00,756 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:07:00,756 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 12 [2021-05-02 12:07:00,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202107052] [2021-05-02 12:07:00,757 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 12:07:00,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:07:00,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 12:07:00,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-05-02 12:07:00,757 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 12 states, 12 states have (on average 1.5) internal successors, (18), 8 states have internal predecessors, (18), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 12:07:01,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:07:01,063 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2021-05-02 12:07:01,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 12:07:01,064 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 8 states have internal predecessors, (18), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 29 [2021-05-02 12:07:01,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:07:01,066 INFO L225 Difference]: With dead ends: 34 [2021-05-02 12:07:01,066 INFO L226 Difference]: Without dead ends: 29 [2021-05-02 12:07:01,066 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 285.8ms TimeCoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2021-05-02 12:07:01,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-05-02 12:07:01,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2021-05-02 12:07:01,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 7 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-02 12:07:01,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2021-05-02 12:07:01,079 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 29 [2021-05-02 12:07:01,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:07:01,079 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2021-05-02 12:07:01,079 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 8 states have internal predecessors, (18), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 12:07:01,079 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2021-05-02 12:07:01,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-05-02 12:07:01,080 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:07:01,081 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:07:01,300 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:07:01,301 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:07:01,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:07:01,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1928781922, now seen corresponding path program 4 times [2021-05-02 12:07:01,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:07:01,301 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193011526] [2021-05-02 12:07:01,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:07:01,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:01,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:07:01,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:01,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:07:01,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:01,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:07:01,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:01,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:07:01,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:01,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:07:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:01,448 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-05-02 12:07:01,448 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:07:01,448 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193011526] [2021-05-02 12:07:01,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193011526] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:07:01,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288860035] [2021-05-02 12:07:01,449 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 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 12:07:01,487 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:07:01,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:07:01,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 43 conjunts are in the unsatisfiable core [2021-05-02 12:07:01,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:07:01,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:01,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:01,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:01,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:01,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:01,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:01,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:01,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:01,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:01,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:01,630 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-05-02 12:07:01,630 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288860035] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:07:01,630 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:07:01,630 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 14 [2021-05-02 12:07:01,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778843522] [2021-05-02 12:07:01,631 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-02 12:07:01,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:07:01,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-02 12:07:01,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-05-02 12:07:01,631 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 14 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 9 states have internal predecessors, (20), 6 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-02 12:07:01,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:07:01,974 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2021-05-02 12:07:01,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-02 12:07:01,975 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 9 states have internal predecessors, (20), 6 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 35 [2021-05-02 12:07:01,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:07:01,977 INFO L225 Difference]: With dead ends: 37 [2021-05-02 12:07:01,977 INFO L226 Difference]: Without dead ends: 32 [2021-05-02 12:07:01,977 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 353.5ms TimeCoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2021-05-02 12:07:01,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-05-02 12:07:01,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2021-05-02 12:07:01,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 8 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-02 12:07:01,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2021-05-02 12:07:01,985 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 35 [2021-05-02 12:07:01,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:07:01,985 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2021-05-02 12:07:01,986 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 9 states have internal predecessors, (20), 6 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-02 12:07:01,986 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2021-05-02 12:07:01,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-05-02 12:07:01,988 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:07:01,988 INFO L523 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:07:02,200 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:07:02,201 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:07:02,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:07:02,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1005752324, now seen corresponding path program 5 times [2021-05-02 12:07:02,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:07:02,202 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832750893] [2021-05-02 12:07:02,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:07:02,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:02,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:07:02,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:02,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:07:02,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:02,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:07:02,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:02,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:07:02,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:02,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:07:02,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:02,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:07:02,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:02,399 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-05-02 12:07:02,400 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:07:02,400 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832750893] [2021-05-02 12:07:02,401 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832750893] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:07:02,401 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964986234] [2021-05-02 12:07:02,401 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 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 12:07:02,451 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-05-02 12:07:02,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:07:02,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 53 conjunts are in the unsatisfiable core [2021-05-02 12:07:02,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:07:02,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:02,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:02,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:02,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:02,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:02,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:02,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:02,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:02,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:02,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:02,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:02,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:02,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:02,613 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-05-02 12:07:02,614 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964986234] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:07:02,614 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:07:02,614 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 16 [2021-05-02 12:07:02,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632780700] [2021-05-02 12:07:02,614 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-02 12:07:02,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:07:02,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-02 12:07:02,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-05-02 12:07:02,615 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 16 states, 16 states have (on average 1.375) internal successors, (22), 10 states have internal predecessors, (22), 7 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-02 12:07:03,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:07:03,034 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2021-05-02 12:07:03,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-02 12:07:03,035 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.375) internal successors, (22), 10 states have internal predecessors, (22), 7 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 41 [2021-05-02 12:07:03,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:07:03,036 INFO L225 Difference]: With dead ends: 40 [2021-05-02 12:07:03,036 INFO L226 Difference]: Without dead ends: 35 [2021-05-02 12:07:03,036 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 47 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 421.8ms TimeCoverageRelationStatistics Valid=104, Invalid=652, Unknown=0, NotChecked=0, Total=756 [2021-05-02 12:07:03,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-02 12:07:03,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2021-05-02 12:07:03,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 states have internal predecessors, (22), 9 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-02 12:07:03,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2021-05-02 12:07:03,040 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 41 [2021-05-02 12:07:03,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:07:03,041 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2021-05-02 12:07:03,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.375) internal successors, (22), 10 states have internal predecessors, (22), 7 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-02 12:07:03,041 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2021-05-02 12:07:03,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-05-02 12:07:03,041 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:07:03,041 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:07:03,256 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-05-02 12:07:03,256 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:07:03,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:07:03,257 INFO L82 PathProgramCache]: Analyzing trace with hash 119505370, now seen corresponding path program 6 times [2021-05-02 12:07:03,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:07:03,257 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767328959] [2021-05-02 12:07:03,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:07:03,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:03,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:07:03,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:03,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:07:03,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:03,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:07:03,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:03,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:07:03,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:03,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:07:03,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:03,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:07:03,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:03,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:07:03,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:03,452 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-05-02 12:07:03,452 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:07:03,452 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767328959] [2021-05-02 12:07:03,452 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767328959] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:07:03,452 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430759602] [2021-05-02 12:07:03,452 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 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 12:07:03,586 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-05-02 12:07:03,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:07:03,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 63 conjunts are in the unsatisfiable core [2021-05-02 12:07:03,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:07:03,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:03,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:03,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:03,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:03,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:03,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:03,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:03,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:03,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:03,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:03,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:03,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:03,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:03,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:03,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:03,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:03,755 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-05-02 12:07:03,755 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430759602] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:07:03,755 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:07:03,755 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 18 [2021-05-02 12:07:03,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580125190] [2021-05-02 12:07:03,755 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-02 12:07:03,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:07:03,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-02 12:07:03,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-05-02 12:07:03,756 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 18 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 11 states have internal predecessors, (24), 8 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-02 12:07:04,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:07:04,242 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2021-05-02 12:07:04,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-02 12:07:04,243 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 11 states have internal predecessors, (24), 8 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 47 [2021-05-02 12:07:04,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:07:04,243 INFO L225 Difference]: With dead ends: 43 [2021-05-02 12:07:04,243 INFO L226 Difference]: Without dead ends: 38 [2021-05-02 12:07:04,244 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 54 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 512.8ms TimeCoverageRelationStatistics Valid=121, Invalid=871, Unknown=0, NotChecked=0, Total=992 [2021-05-02 12:07:04,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-05-02 12:07:04,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2021-05-02 12:07:04,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 10 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-02 12:07:04,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2021-05-02 12:07:04,248 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 47 [2021-05-02 12:07:04,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:07:04,248 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2021-05-02 12:07:04,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 11 states have internal predecessors, (24), 8 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-02 12:07:04,249 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2021-05-02 12:07:04,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-05-02 12:07:04,249 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:07:04,249 INFO L523 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:07:04,453 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:07:04,453 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:07:04,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:07:04,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1581790520, now seen corresponding path program 7 times [2021-05-02 12:07:04,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:07:04,454 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630225821] [2021-05-02 12:07:04,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:07:04,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:04,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:07:04,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:04,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:07:04,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:04,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:07:04,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:04,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:07:04,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:04,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:07:04,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:04,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:07:04,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:04,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:07:04,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:04,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:07:04,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:04,684 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-05-02 12:07:04,684 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:07:04,684 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630225821] [2021-05-02 12:07:04,684 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630225821] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:07:04,684 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085611856] [2021-05-02 12:07:04,684 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 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 12:07:04,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:04,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 73 conjunts are in the unsatisfiable core [2021-05-02 12:07:04,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:07:04,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:04,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:04,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:04,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:04,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:04,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:04,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:04,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:04,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:04,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:04,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:04,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:04,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:04,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:04,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:04,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:04,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:04,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:04,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:04,942 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-05-02 12:07:04,943 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085611856] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:07:04,943 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:07:04,943 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 20 [2021-05-02 12:07:04,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426074950] [2021-05-02 12:07:04,943 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-02 12:07:04,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:07:04,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-02 12:07:04,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2021-05-02 12:07:04,944 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 20 states, 20 states have (on average 1.3) internal successors, (26), 12 states have internal predecessors, (26), 9 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-02 12:07:05,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:07:05,660 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2021-05-02 12:07:05,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-02 12:07:05,661 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.3) internal successors, (26), 12 states have internal predecessors, (26), 9 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 53 [2021-05-02 12:07:05,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:07:05,662 INFO L225 Difference]: With dead ends: 46 [2021-05-02 12:07:05,662 INFO L226 Difference]: Without dead ends: 41 [2021-05-02 12:07:05,663 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 61 SyntacticMatches, 7 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 656.5ms TimeCoverageRelationStatistics Valid=138, Invalid=1122, Unknown=0, NotChecked=0, Total=1260 [2021-05-02 12:07:05,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-05-02 12:07:05,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2021-05-02 12:07:05,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 11 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-05-02 12:07:05,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2021-05-02 12:07:05,673 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 53 [2021-05-02 12:07:05,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:07:05,675 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2021-05-02 12:07:05,675 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.3) internal successors, (26), 12 states have internal predecessors, (26), 9 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-02 12:07:05,675 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2021-05-02 12:07:05,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-05-02 12:07:05,676 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:07:05,676 INFO L523 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:07:05,891 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:07:05,892 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:07:05,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:07:05,892 INFO L82 PathProgramCache]: Analyzing trace with hash 526936598, now seen corresponding path program 8 times [2021-05-02 12:07:05,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:07:05,892 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249992492] [2021-05-02 12:07:05,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:07:05,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:06,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:07:06,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:06,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:07:06,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:06,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:07:06,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:06,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:07:06,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:06,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:07:06,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:06,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:07:06,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:06,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:07:06,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:06,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:07:06,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:06,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:07:06,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:06,379 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-05-02 12:07:06,379 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:07:06,379 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249992492] [2021-05-02 12:07:06,379 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249992492] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:07:06,379 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814672277] [2021-05-02 12:07:06,379 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 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 12:07:06,466 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:07:06,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:07:06,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 83 conjunts are in the unsatisfiable core [2021-05-02 12:07:06,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:07:06,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,754 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-05-02 12:07:06,755 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814672277] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:07:06,755 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:07:06,755 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 22 [2021-05-02 12:07:06,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419067716] [2021-05-02 12:07:06,756 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-02 12:07:06,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:07:06,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-02 12:07:06,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2021-05-02 12:07:06,757 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand has 22 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 13 states have internal predecessors, (28), 10 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-05-02 12:07:07,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:07:07,552 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2021-05-02 12:07:07,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-02 12:07:07,552 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 13 states have internal predecessors, (28), 10 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 59 [2021-05-02 12:07:07,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:07:07,553 INFO L225 Difference]: With dead ends: 49 [2021-05-02 12:07:07,553 INFO L226 Difference]: Without dead ends: 44 [2021-05-02 12:07:07,553 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 68 SyntacticMatches, 8 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 937.0ms TimeCoverageRelationStatistics Valid=155, Invalid=1405, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 12:07:07,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-05-02 12:07:07,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2021-05-02 12:07:07,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.037037037037037) internal successors, (28), 27 states have internal predecessors, (28), 12 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 12:07:07,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2021-05-02 12:07:07,558 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 59 [2021-05-02 12:07:07,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:07:07,558 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2021-05-02 12:07:07,558 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 13 states have internal predecessors, (28), 10 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-05-02 12:07:07,558 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2021-05-02 12:07:07,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-05-02 12:07:07,558 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:07:07,559 INFO L523 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:07:07,776 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-05-02 12:07:07,777 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:07:07,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:07:07,777 INFO L82 PathProgramCache]: Analyzing trace with hash 741933172, now seen corresponding path program 9 times [2021-05-02 12:07:07,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:07:07,778 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488932912] [2021-05-02 12:07:07,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:07:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:08,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:07:08,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:08,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:07:08,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:08,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:07:08,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:08,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:07:08,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:08,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:07:08,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:08,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:07:08,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:08,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:07:08,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:08,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:07:08,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:08,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:07:08,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:08,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:07:08,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:08,085 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-05-02 12:07:08,086 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:07:08,086 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488932912] [2021-05-02 12:07:08,086 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488932912] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:07:08,086 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269180048] [2021-05-02 12:07:08,086 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 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 12:07:08,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-05-02 12:07:08,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:07:08,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 104 conjunts are in the unsatisfiable core [2021-05-02 12:07:08,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:07:08,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:08,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:08,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:08,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:08,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:08,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:08,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:08,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:08,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:08,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:08,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:08,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:08,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:08,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:08,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:08,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:08,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:08,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:08,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:08,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:08,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:08,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:08,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:08,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:08,626 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-05-02 12:07:08,626 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269180048] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:07:08,626 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:07:08,626 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22] total 24 [2021-05-02 12:07:08,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85886552] [2021-05-02 12:07:08,627 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-02 12:07:08,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:07:08,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-02 12:07:08,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552 [2021-05-02 12:07:08,628 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand has 24 states, 24 states have (on average 1.25) internal successors, (30), 14 states have internal predecessors, (30), 11 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 12:07:09,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:07:09,526 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2021-05-02 12:07:09,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-02 12:07:09,527 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.25) internal successors, (30), 14 states have internal predecessors, (30), 11 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 65 [2021-05-02 12:07:09,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:07:09,528 INFO L225 Difference]: With dead ends: 52 [2021-05-02 12:07:09,528 INFO L226 Difference]: Without dead ends: 47 [2021-05-02 12:07:09,528 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 69 SyntacticMatches, 15 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1009.9ms TimeCoverageRelationStatistics Valid=172, Invalid=1720, Unknown=0, NotChecked=0, Total=1892 [2021-05-02 12:07:09,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-05-02 12:07:09,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2021-05-02 12:07:09,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 29 states have internal predecessors, (30), 13 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-05-02 12:07:09,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2021-05-02 12:07:09,551 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 65 [2021-05-02 12:07:09,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:07:09,551 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2021-05-02 12:07:09,551 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 1.25) internal successors, (30), 14 states have internal predecessors, (30), 11 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 12:07:09,551 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2021-05-02 12:07:09,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-05-02 12:07:09,552 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:07:09,552 INFO L523 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:07:09,752 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:07:09,753 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:07:09,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:07:09,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1337272238, now seen corresponding path program 10 times [2021-05-02 12:07:09,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:07:09,754 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097332574] [2021-05-02 12:07:09,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:07:09,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:10,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:07:10,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:10,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:07:10,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:10,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:07:10,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:10,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:07:10,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:10,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:07:10,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:10,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:07:10,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:10,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:07:10,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:10,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:07:10,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:10,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:07:10,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:10,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:07:10,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:10,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:07:10,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:10,131 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-05-02 12:07:10,131 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:07:10,131 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097332574] [2021-05-02 12:07:10,132 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097332574] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:07:10,132 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807128995] [2021-05-02 12:07:10,132 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 12:07:10,184 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:07:10,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:07:10,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 103 conjunts are in the unsatisfiable core [2021-05-02 12:07:10,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:07:10,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:10,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:10,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:10,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:10,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:10,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:10,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:10,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:10,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:10,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:10,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:10,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:10,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:10,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:10,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:10,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:10,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:10,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:10,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:10,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:10,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:10,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:10,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:10,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:10,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:10,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:10,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:10,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:10,562 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-05-02 12:07:10,563 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807128995] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:07:10,563 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:07:10,563 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24] total 26 [2021-05-02 12:07:10,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396507977] [2021-05-02 12:07:10,563 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-02 12:07:10,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:07:10,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-02 12:07:10,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2021-05-02 12:07:10,564 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand has 26 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 15 states have internal predecessors, (32), 12 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-05-02 12:07:11,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:07:11,554 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2021-05-02 12:07:11,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-05-02 12:07:11,554 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 15 states have internal predecessors, (32), 12 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 71 [2021-05-02 12:07:11,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:07:11,555 INFO L225 Difference]: With dead ends: 55 [2021-05-02 12:07:11,555 INFO L226 Difference]: Without dead ends: 50 [2021-05-02 12:07:11,555 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 82 SyntacticMatches, 10 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 1074.8ms TimeCoverageRelationStatistics Valid=189, Invalid=2067, Unknown=0, NotChecked=0, Total=2256 [2021-05-02 12:07:11,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-05-02 12:07:11,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2021-05-02 12:07:11,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 14 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-02 12:07:11,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2021-05-02 12:07:11,560 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 71 [2021-05-02 12:07:11,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:07:11,561 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2021-05-02 12:07:11,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 15 states have internal predecessors, (32), 12 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-05-02 12:07:11,561 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2021-05-02 12:07:11,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-05-02 12:07:11,562 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:07:11,562 INFO L523 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:07:11,772 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:07:11,774 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:07:11,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:07:11,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1594282416, now seen corresponding path program 11 times [2021-05-02 12:07:11,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:07:11,775 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10777520] [2021-05-02 12:07:11,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:07:11,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:12,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:07:12,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:12,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:07:12,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:12,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:07:12,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:12,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:07:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:12,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:07:12,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:12,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:07:12,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:12,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:07:12,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:12,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:07:12,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:12,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:07:12,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:12,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:07:12,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:12,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:07:12,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:12,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:07:12,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:12,184 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-05-02 12:07:12,184 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:07:12,184 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10777520] [2021-05-02 12:07:12,184 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10777520] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:07:12,184 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374616621] [2021-05-02 12:07:12,184 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 12:07:12,557 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-05-02 12:07:12,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:07:12,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 113 conjunts are in the unsatisfiable core [2021-05-02 12:07:12,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:07:12,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:12,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:12,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:12,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:12,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:12,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:12,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:12,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:12,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:12,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:12,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:12,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:12,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:12,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:12,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:12,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:12,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:12,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:12,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:12,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:12,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:12,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:12,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:12,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:12,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:12,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:12,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:12,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:12,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:12,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:12,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:12,958 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-05-02 12:07:12,958 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374616621] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:07:12,958 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:07:12,958 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26] total 28 [2021-05-02 12:07:12,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819934595] [2021-05-02 12:07:12,958 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-02 12:07:12,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:07:12,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-02 12:07:12,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2021-05-02 12:07:12,959 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 28 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 16 states have internal predecessors, (34), 13 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-02 12:07:14,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:07:14,071 INFO L93 Difference]: Finished difference Result 58 states and 70 transitions. [2021-05-02 12:07:14,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-02 12:07:14,071 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 16 states have internal predecessors, (34), 13 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 77 [2021-05-02 12:07:14,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:07:14,072 INFO L225 Difference]: With dead ends: 58 [2021-05-02 12:07:14,072 INFO L226 Difference]: Without dead ends: 53 [2021-05-02 12:07:14,072 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 89 SyntacticMatches, 11 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 1205.9ms TimeCoverageRelationStatistics Valid=206, Invalid=2446, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 12:07:14,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-05-02 12:07:14,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2021-05-02 12:07:14,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 33 states have (on average 1.0303030303030303) internal successors, (34), 33 states have internal predecessors, (34), 15 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-05-02 12:07:14,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 62 transitions. [2021-05-02 12:07:14,078 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 62 transitions. Word has length 77 [2021-05-02 12:07:14,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:07:14,078 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 62 transitions. [2021-05-02 12:07:14,078 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 16 states have internal predecessors, (34), 13 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-02 12:07:14,078 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2021-05-02 12:07:14,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-05-02 12:07:14,079 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:07:14,079 INFO L523 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:07:14,281 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-05-02 12:07:14,281 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:07:14,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:07:14,281 INFO L82 PathProgramCache]: Analyzing trace with hash 833473678, now seen corresponding path program 12 times [2021-05-02 12:07:14,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:07:14,281 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918092680] [2021-05-02 12:07:14,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:07:14,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:14,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:07:14,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:14,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:07:14,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:14,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:07:14,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:14,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:07:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:14,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:07:14,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:14,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:07:14,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:14,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:07:14,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:14,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:07:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:14,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:07:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:14,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:07:14,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:14,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:07:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:14,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:07:14,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:14,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:07:14,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:14,738 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2021-05-02 12:07:14,738 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:07:14,739 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918092680] [2021-05-02 12:07:14,739 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918092680] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:07:14,739 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831896546] [2021-05-02 12:07:14,739 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 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 12:07:15,012 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-05-02 12:07:15,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:07:15,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 126 conjunts are in the unsatisfiable core [2021-05-02 12:07:15,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:07:15,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:15,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:15,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:15,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:15,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:15,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:15,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:15,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:15,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:15,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:15,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:15,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:15,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:15,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:15,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:15,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:15,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:15,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:15,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:15,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:15,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:15,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:15,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:15,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:15,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:15,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:15,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:15,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:15,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:15,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:15,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:15,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:15,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:15,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:15,442 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2021-05-02 12:07:15,442 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831896546] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:07:15,443 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:07:15,443 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28] total 30 [2021-05-02 12:07:15,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253116317] [2021-05-02 12:07:15,444 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-05-02 12:07:15,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:07:15,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-05-02 12:07:15,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=800, Unknown=0, NotChecked=0, Total=870 [2021-05-02 12:07:15,445 INFO L87 Difference]: Start difference. First operand 51 states and 62 transitions. Second operand has 30 states, 30 states have (on average 1.2) internal successors, (36), 17 states have internal predecessors, (36), 14 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-05-02 12:07:16,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:07:16,754 INFO L93 Difference]: Finished difference Result 61 states and 74 transitions. [2021-05-02 12:07:16,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-02 12:07:16,757 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.2) internal successors, (36), 17 states have internal predecessors, (36), 14 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 83 [2021-05-02 12:07:16,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:07:16,757 INFO L225 Difference]: With dead ends: 61 [2021-05-02 12:07:16,757 INFO L226 Difference]: Without dead ends: 56 [2021-05-02 12:07:16,758 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 93 SyntacticMatches, 15 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 1384.8ms TimeCoverageRelationStatistics Valid=223, Invalid=2857, Unknown=0, NotChecked=0, Total=3080 [2021-05-02 12:07:16,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-05-02 12:07:16,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2021-05-02 12:07:16,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 35 states have internal predecessors, (36), 16 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-05-02 12:07:16,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 66 transitions. [2021-05-02 12:07:16,763 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 66 transitions. Word has length 83 [2021-05-02 12:07:16,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:07:16,763 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 66 transitions. [2021-05-02 12:07:16,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 1.2) internal successors, (36), 17 states have internal predecessors, (36), 14 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-05-02 12:07:16,764 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 66 transitions. [2021-05-02 12:07:16,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-05-02 12:07:16,764 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:07:16,764 INFO L523 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:07:16,972 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-05-02 12:07:16,972 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:07:16,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:07:16,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1520916244, now seen corresponding path program 13 times [2021-05-02 12:07:16,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:07:16,973 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860381022] [2021-05-02 12:07:16,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:07:16,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:17,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:07:17,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:17,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:07:17,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:17,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:07:17,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:17,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:07:17,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:17,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:07:17,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:17,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:07:17,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:17,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:07:17,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:17,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:07:17,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:17,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:07:17,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:17,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:07:17,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:17,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:07:17,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:17,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:07:17,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:17,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:07:17,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:17,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:07:17,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:17,489 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2021-05-02 12:07:17,489 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:07:17,489 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860381022] [2021-05-02 12:07:17,489 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860381022] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:07:17,489 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412874400] [2021-05-02 12:07:17,489 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 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 12:07:17,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:17,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 133 conjunts are in the unsatisfiable core [2021-05-02 12:07:17,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:07:17,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:17,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:17,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:17,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:17,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:17,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:17,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:17,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:17,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:17,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:17,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:17,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:17,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:17,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:17,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:17,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:17,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:17,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:17,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:17,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:17,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:17,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:17,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:17,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:17,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:17,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:17,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:17,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:17,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:17,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:17,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:17,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:18,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:18,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:18,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:18,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:18,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:18,104 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2021-05-02 12:07:18,104 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412874400] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:07:18,104 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:07:18,104 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30] total 32 [2021-05-02 12:07:18,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344250152] [2021-05-02 12:07:18,104 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-02 12:07:18,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:07:18,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-02 12:07:18,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=917, Unknown=0, NotChecked=0, Total=992 [2021-05-02 12:07:18,105 INFO L87 Difference]: Start difference. First operand 54 states and 66 transitions. Second operand has 32 states, 32 states have (on average 1.1875) internal successors, (38), 18 states have internal predecessors, (38), 15 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-05-02 12:07:19,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:07:19,547 INFO L93 Difference]: Finished difference Result 64 states and 78 transitions. [2021-05-02 12:07:19,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-02 12:07:19,548 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.1875) internal successors, (38), 18 states have internal predecessors, (38), 15 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 89 [2021-05-02 12:07:19,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:07:19,548 INFO L225 Difference]: With dead ends: 64 [2021-05-02 12:07:19,548 INFO L226 Difference]: Without dead ends: 59 [2021-05-02 12:07:19,549 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 103 SyntacticMatches, 13 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 1600.1ms TimeCoverageRelationStatistics Valid=240, Invalid=3300, Unknown=0, NotChecked=0, Total=3540 [2021-05-02 12:07:19,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-05-02 12:07:19,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2021-05-02 12:07:19,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 37 states have (on average 1.027027027027027) internal successors, (38), 37 states have internal predecessors, (38), 17 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-05-02 12:07:19,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 70 transitions. [2021-05-02 12:07:19,554 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 70 transitions. Word has length 89 [2021-05-02 12:07:19,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:07:19,555 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 70 transitions. [2021-05-02 12:07:19,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 1.1875) internal successors, (38), 18 states have internal predecessors, (38), 15 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-05-02 12:07:19,555 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 70 transitions. [2021-05-02 12:07:19,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-05-02 12:07:19,555 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:07:19,556 INFO L523 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:07:19,772 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-05-02 12:07:19,773 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:07:19,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:07:19,773 INFO L82 PathProgramCache]: Analyzing trace with hash 2029536970, now seen corresponding path program 14 times [2021-05-02 12:07:19,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:07:19,773 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653989784] [2021-05-02 12:07:19,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:07:19,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:20,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:07:20,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:20,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:07:20,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:20,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:07:20,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:20,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:07:20,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:20,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:07:20,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:20,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:07:20,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:20,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:07:20,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:20,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:07:20,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:20,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:07:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:20,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:07:20,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:20,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:07:20,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:20,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:07:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:20,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:07:20,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:20,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:07:20,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:20,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:07:20,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:20,344 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2021-05-02 12:07:20,344 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:07:20,344 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653989784] [2021-05-02 12:07:20,344 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653989784] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:07:20,345 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105400073] [2021-05-02 12:07:20,345 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 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 12:07:20,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:07:20,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:07:20,407 WARN L261 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 143 conjunts are in the unsatisfiable core [2021-05-02 12:07:20,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:07:20,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:20,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:20,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:20,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:20,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:20,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:20,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:20,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:20,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:20,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:20,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:20,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:20,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:20,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:20,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:20,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:20,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:20,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:20,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:20,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:20,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:20,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:20,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:20,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:20,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:20,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:20,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:20,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:20,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:20,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:20,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:20,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:20,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:20,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:20,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:20,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:20,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:20,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:20,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:20,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:20,965 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2021-05-02 12:07:20,965 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105400073] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:07:20,965 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:07:20,965 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32] total 34 [2021-05-02 12:07:20,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474988975] [2021-05-02 12:07:20,966 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-05-02 12:07:20,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:07:20,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-05-02 12:07:20,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=1042, Unknown=0, NotChecked=0, Total=1122 [2021-05-02 12:07:20,966 INFO L87 Difference]: Start difference. First operand 57 states and 70 transitions. Second operand has 34 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 19 states have internal predecessors, (40), 16 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-05-02 12:07:22,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:07:22,668 INFO L93 Difference]: Finished difference Result 67 states and 82 transitions. [2021-05-02 12:07:22,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-02 12:07:22,668 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 19 states have internal predecessors, (40), 16 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 95 [2021-05-02 12:07:22,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:07:22,669 INFO L225 Difference]: With dead ends: 67 [2021-05-02 12:07:22,669 INFO L226 Difference]: Without dead ends: 62 [2021-05-02 12:07:22,670 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 110 SyntacticMatches, 14 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 1785.2ms TimeCoverageRelationStatistics Valid=257, Invalid=3775, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 12:07:22,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-05-02 12:07:22,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2021-05-02 12:07:22,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 39 states have (on average 1.0256410256410255) internal successors, (40), 39 states have internal predecessors, (40), 18 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-05-02 12:07:22,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 74 transitions. [2021-05-02 12:07:22,675 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 74 transitions. Word has length 95 [2021-05-02 12:07:22,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:07:22,676 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 74 transitions. [2021-05-02 12:07:22,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 19 states have internal predecessors, (40), 16 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-05-02 12:07:22,676 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 74 transitions. [2021-05-02 12:07:22,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-05-02 12:07:22,676 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:07:22,676 INFO L523 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:07:22,891 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:07:22,891 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:07:22,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:07:22,892 INFO L82 PathProgramCache]: Analyzing trace with hash -346716632, now seen corresponding path program 15 times [2021-05-02 12:07:22,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:07:22,892 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814583371] [2021-05-02 12:07:22,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:07:22,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:23,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:07:23,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:23,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:07:23,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:23,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:07:23,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:23,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:07:23,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:23,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:07:23,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:23,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:07:23,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:23,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:07:23,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:23,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:07:23,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:23,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:07:23,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:23,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:07:23,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:23,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:07:23,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:23,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:07:23,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:23,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:07:23,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:23,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:07:23,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:23,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:07:23,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:23,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:07:23,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:23,520 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2021-05-02 12:07:23,520 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:07:23,520 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814583371] [2021-05-02 12:07:23,520 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814583371] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:07:23,520 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032589754] [2021-05-02 12:07:23,521 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 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 12:07:24,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-05-02 12:07:24,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:07:24,285 WARN L261 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 158 conjunts are in the unsatisfiable core [2021-05-02 12:07:24,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:07:24,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:24,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:24,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:24,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:24,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:24,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:24,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:24,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:24,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:24,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:24,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:24,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:24,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:24,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:24,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:24,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:24,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:24,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:24,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:24,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:24,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:24,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:24,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:24,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:24,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:24,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:24,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:24,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:24,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:24,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:24,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:24,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:24,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:24,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:24,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:24,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:24,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:24,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:24,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:24,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:24,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:25,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:25,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:25,059 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2021-05-02 12:07:25,060 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032589754] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:07:25,060 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:07:25,060 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34] total 36 [2021-05-02 12:07:25,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817965029] [2021-05-02 12:07:25,061 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-05-02 12:07:25,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:07:25,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-05-02 12:07:25,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2021-05-02 12:07:25,061 INFO L87 Difference]: Start difference. First operand 60 states and 74 transitions. Second operand has 36 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 20 states have internal predecessors, (42), 17 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-05-02 12:07:26,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:07:26,791 INFO L93 Difference]: Finished difference Result 70 states and 86 transitions. [2021-05-02 12:07:26,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-02 12:07:26,791 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 20 states have internal predecessors, (42), 17 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 101 [2021-05-02 12:07:26,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:07:26,792 INFO L225 Difference]: With dead ends: 70 [2021-05-02 12:07:26,792 INFO L226 Difference]: Without dead ends: 65 [2021-05-02 12:07:26,793 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 112 SyntacticMatches, 20 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 2098.2ms TimeCoverageRelationStatistics Valid=274, Invalid=4282, Unknown=0, NotChecked=0, Total=4556 [2021-05-02 12:07:26,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-05-02 12:07:26,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2021-05-02 12:07:26,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 41 states have (on average 1.024390243902439) internal successors, (42), 41 states have internal predecessors, (42), 19 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-05-02 12:07:26,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 78 transitions. [2021-05-02 12:07:26,801 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 78 transitions. Word has length 101 [2021-05-02 12:07:26,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:07:26,801 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 78 transitions. [2021-05-02 12:07:26,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 20 states have internal predecessors, (42), 17 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-05-02 12:07:26,802 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 78 transitions. [2021-05-02 12:07:26,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-05-02 12:07:26,802 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:07:26,802 INFO L523 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:07:27,005 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-05-02 12:07:27,006 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:07:27,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:07:27,006 INFO L82 PathProgramCache]: Analyzing trace with hash 2031175430, now seen corresponding path program 16 times [2021-05-02 12:07:27,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:07:27,006 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805206824] [2021-05-02 12:07:27,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:07:27,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:27,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:07:27,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:27,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:07:27,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:27,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:07:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:27,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:07:27,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:27,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:07:27,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:27,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:07:27,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:27,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:07:27,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:27,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:07:27,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:27,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:07:27,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:27,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:07:27,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:27,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:07:27,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:27,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:07:27,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:27,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:07:27,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:27,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:07:27,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:27,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:07:27,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:27,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:07:27,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:27,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:07:27,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:27,717 INFO L134 CoverageAnalysis]: Checked inductivity of 736 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2021-05-02 12:07:27,717 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:07:27,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805206824] [2021-05-02 12:07:27,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805206824] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:07:27,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408407672] [2021-05-02 12:07:27,717 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 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 12:07:27,772 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:07:27,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:07:27,775 WARN L261 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 163 conjunts are in the unsatisfiable core [2021-05-02 12:07:27,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:07:27,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:27,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:27,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:27,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:27,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:27,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:27,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:27,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:27,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:27,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:27,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:27,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:27,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:27,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:28,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:28,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:28,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:28,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:28,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:28,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:28,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:28,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:28,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:28,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:28,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:28,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:28,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:28,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:28,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:28,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:28,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:28,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:28,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:28,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:28,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:28,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:28,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:28,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:28,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:28,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:28,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:28,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:28,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:28,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:28,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:28,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:28,497 INFO L134 CoverageAnalysis]: Checked inductivity of 736 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2021-05-02 12:07:28,497 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408407672] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:07:28,497 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:07:28,497 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36] total 38 [2021-05-02 12:07:28,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766583595] [2021-05-02 12:07:28,498 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-05-02 12:07:28,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:07:28,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-05-02 12:07:28,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1316, Unknown=0, NotChecked=0, Total=1406 [2021-05-02 12:07:28,499 INFO L87 Difference]: Start difference. First operand 63 states and 78 transitions. Second operand has 38 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 21 states have internal predecessors, (44), 18 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-05-02 12:07:30,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:07:30,418 INFO L93 Difference]: Finished difference Result 73 states and 90 transitions. [2021-05-02 12:07:30,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-02 12:07:30,419 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 21 states have internal predecessors, (44), 18 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Word has length 107 [2021-05-02 12:07:30,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:07:30,423 INFO L225 Difference]: With dead ends: 73 [2021-05-02 12:07:30,423 INFO L226 Difference]: Without dead ends: 68 [2021-05-02 12:07:30,424 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 124 SyntacticMatches, 16 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 2235.6ms TimeCoverageRelationStatistics Valid=291, Invalid=4821, Unknown=0, NotChecked=0, Total=5112 [2021-05-02 12:07:30,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-05-02 12:07:30,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2021-05-02 12:07:30,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 43 states have (on average 1.0232558139534884) internal successors, (44), 43 states have internal predecessors, (44), 20 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-05-02 12:07:30,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 82 transitions. [2021-05-02 12:07:30,439 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 82 transitions. Word has length 107 [2021-05-02 12:07:30,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:07:30,440 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 82 transitions. [2021-05-02 12:07:30,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 21 states have internal predecessors, (44), 18 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-05-02 12:07:30,440 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 82 transitions. [2021-05-02 12:07:30,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-05-02 12:07:30,441 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:07:30,441 INFO L523 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:07:30,642 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-05-02 12:07:30,642 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:07:30,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:07:30,642 INFO L82 PathProgramCache]: Analyzing trace with hash 446982500, now seen corresponding path program 17 times [2021-05-02 12:07:30,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:07:30,642 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071878894] [2021-05-02 12:07:30,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:07:30,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:31,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:07:31,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:31,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:07:31,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:31,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:07:31,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:31,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:07:31,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:31,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:07:31,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:31,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:07:31,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:31,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:07:31,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:31,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:07:31,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:31,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:07:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:31,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:07:31,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:31,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:07:31,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:31,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:07:31,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:31,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:07:31,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:31,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:07:31,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:31,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:07:31,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:31,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:07:31,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:31,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:07:31,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:31,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:07:31,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:31,428 INFO L134 CoverageAnalysis]: Checked inductivity of 833 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2021-05-02 12:07:31,428 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:07:31,428 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071878894] [2021-05-02 12:07:31,428 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071878894] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:07:31,428 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384020311] [2021-05-02 12:07:31,428 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 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 12:07:33,199 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-05-02 12:07:33,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:07:33,204 WARN L261 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 184 conjunts are in the unsatisfiable core [2021-05-02 12:07:33,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:07:33,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:34,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:34,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:34,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:34,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:34,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:34,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:34,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:34,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:34,162 INFO L134 CoverageAnalysis]: Checked inductivity of 833 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2021-05-02 12:07:34,162 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384020311] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:07:34,162 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:07:34,162 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38] total 40 [2021-05-02 12:07:34,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904529469] [2021-05-02 12:07:34,164 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-05-02 12:07:34,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:07:34,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-05-02 12:07:34,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1465, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 12:07:34,165 INFO L87 Difference]: Start difference. First operand 66 states and 82 transitions. Second operand has 40 states, 40 states have (on average 1.15) internal successors, (46), 22 states have internal predecessors, (46), 19 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-05-02 12:07:36,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:07:36,256 INFO L93 Difference]: Finished difference Result 76 states and 94 transitions. [2021-05-02 12:07:36,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-02 12:07:36,257 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.15) internal successors, (46), 22 states have internal predecessors, (46), 19 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 113 [2021-05-02 12:07:36,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:07:36,257 INFO L225 Difference]: With dead ends: 76 [2021-05-02 12:07:36,257 INFO L226 Difference]: Without dead ends: 71 [2021-05-02 12:07:36,259 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 120 SyntacticMatches, 28 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 2584.9ms TimeCoverageRelationStatistics Valid=308, Invalid=5392, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 12:07:36,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-05-02 12:07:36,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2021-05-02 12:07:36,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 45 states have (on average 1.0222222222222221) internal successors, (46), 45 states have internal predecessors, (46), 21 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-05-02 12:07:36,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 86 transitions. [2021-05-02 12:07:36,265 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 86 transitions. Word has length 113 [2021-05-02 12:07:36,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:07:36,265 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 86 transitions. [2021-05-02 12:07:36,265 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 1.15) internal successors, (46), 22 states have internal predecessors, (46), 19 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-05-02 12:07:36,265 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 86 transitions. [2021-05-02 12:07:36,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-05-02 12:07:36,266 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:07:36,266 INFO L523 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:07:36,469 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:07:36,469 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:07:36,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:07:36,470 INFO L82 PathProgramCache]: Analyzing trace with hash 39832898, now seen corresponding path program 18 times [2021-05-02 12:07:36,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:07:36,470 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060650455] [2021-05-02 12:07:36,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:07:36,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:37,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:07:37,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:37,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:07:37,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:37,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:07:37,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:37,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:07:37,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:37,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:07:37,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:37,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:07:37,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:37,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:07:37,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:37,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:07:37,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:37,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:07:37,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:37,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:07:37,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:37,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:07:37,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:37,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:07:37,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:37,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:07:37,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:37,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:07:37,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:37,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:07:37,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:37,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:07:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:37,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:07:37,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:37,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:07:37,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:37,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:07:37,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:37,338 INFO L134 CoverageAnalysis]: Checked inductivity of 936 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2021-05-02 12:07:37,338 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:07:37,338 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060650455] [2021-05-02 12:07:37,338 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060650455] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:07:37,339 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53522768] [2021-05-02 12:07:37,339 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 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 12:07:38,312 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-05-02 12:07:38,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:07:38,317 WARN L261 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 186 conjunts are in the unsatisfiable core [2021-05-02 12:07:38,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:07:38,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:38,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:38,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:38,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:38,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:38,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:38,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:38,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:38,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:38,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:38,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:38,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:38,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:38,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:38,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:38,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:38,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:38,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:38,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:38,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:38,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:38,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:38,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:38,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:38,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:38,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:38,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:38,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:38,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:38,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:38,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:38,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:38,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:38,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:38,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:38,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:38,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:38,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:38,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:38,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:38,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:39,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:39,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:39,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:39,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:39,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:39,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:39,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:39,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:39,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:39,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:39,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:39,256 INFO L134 CoverageAnalysis]: Checked inductivity of 936 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2021-05-02 12:07:39,256 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53522768] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:07:39,256 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:07:39,256 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40] total 42 [2021-05-02 12:07:39,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750344422] [2021-05-02 12:07:39,256 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-05-02 12:07:39,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:07:39,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-05-02 12:07:39,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1622, Unknown=0, NotChecked=0, Total=1722 [2021-05-02 12:07:39,257 INFO L87 Difference]: Start difference. First operand 69 states and 86 transitions. Second operand has 42 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 23 states have internal predecessors, (48), 20 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-05-02 12:07:41,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:07:41,566 INFO L93 Difference]: Finished difference Result 79 states and 98 transitions. [2021-05-02 12:07:41,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-05-02 12:07:41,566 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 23 states have internal predecessors, (48), 20 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Word has length 119 [2021-05-02 12:07:41,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:07:41,567 INFO L225 Difference]: With dead ends: 79 [2021-05-02 12:07:41,567 INFO L226 Difference]: Without dead ends: 74 [2021-05-02 12:07:41,568 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 135 SyntacticMatches, 21 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 2746.8ms TimeCoverageRelationStatistics Valid=325, Invalid=5995, Unknown=0, NotChecked=0, Total=6320 [2021-05-02 12:07:41,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-05-02 12:07:41,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2021-05-02 12:07:41,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 47 states have internal predecessors, (48), 22 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-05-02 12:07:41,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 90 transitions. [2021-05-02 12:07:41,574 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 90 transitions. Word has length 119 [2021-05-02 12:07:41,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:07:41,575 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 90 transitions. [2021-05-02 12:07:41,575 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 23 states have internal predecessors, (48), 20 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-05-02 12:07:41,575 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 90 transitions. [2021-05-02 12:07:41,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-05-02 12:07:41,575 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:07:41,575 INFO L523 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:07:41,778 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:07:41,778 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:07:41,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:07:41,778 INFO L82 PathProgramCache]: Analyzing trace with hash -630435168, now seen corresponding path program 19 times [2021-05-02 12:07:41,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:07:41,778 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27316677] [2021-05-02 12:07:41,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:07:41,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:42,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:07:42,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:42,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:07:42,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:42,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:07:42,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:42,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:07:42,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:42,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:07:42,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:42,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:07:42,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:42,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:07:42,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:42,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:07:42,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:42,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:07:42,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:42,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:07:42,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:42,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:07:42,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:42,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:07:42,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:42,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:07:42,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:42,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:07:42,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:42,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:07:42,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:42,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:07:42,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:42,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:07:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:42,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:07:42,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:42,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:07:42,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:42,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:07:42,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:42,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1045 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2021-05-02 12:07:42,658 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:07:42,658 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27316677] [2021-05-02 12:07:42,658 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27316677] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:07:42,658 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039679816] [2021-05-02 12:07:42,658 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 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 12:07:42,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:42,727 WARN L261 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 193 conjunts are in the unsatisfiable core [2021-05-02 12:07:42,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:07:42,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:42,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:42,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:42,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:42,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:42,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:42,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:42,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:42,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:42,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:42,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:42,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:42,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:42,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:42,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:42,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:42,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:43,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:43,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:43,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:43,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:43,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:43,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:43,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:43,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:43,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:43,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:43,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:43,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:43,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:43,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:43,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:43,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:43,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:43,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:43,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:43,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:43,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:43,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:43,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:43,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:43,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:43,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:43,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:43,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:43,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:43,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:43,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:43,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:43,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:43,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:43,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:43,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:43,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:43,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:43,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1045 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2021-05-02 12:07:43,642 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039679816] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:07:43,642 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:07:43,642 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 42] total 44 [2021-05-02 12:07:43,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319647852] [2021-05-02 12:07:43,643 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-05-02 12:07:43,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:07:43,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-05-02 12:07:43,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1787, Unknown=0, NotChecked=0, Total=1892 [2021-05-02 12:07:43,644 INFO L87 Difference]: Start difference. First operand 72 states and 90 transitions. Second operand has 44 states, 44 states have (on average 1.1363636363636365) internal successors, (50), 24 states have internal predecessors, (50), 21 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-05-02 12:07:46,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:07:46,149 INFO L93 Difference]: Finished difference Result 82 states and 102 transitions. [2021-05-02 12:07:46,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-02 12:07:46,150 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.1363636363636365) internal successors, (50), 24 states have internal predecessors, (50), 21 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 125 [2021-05-02 12:07:46,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:07:46,150 INFO L225 Difference]: With dead ends: 82 [2021-05-02 12:07:46,151 INFO L226 Difference]: Without dead ends: 77 [2021-05-02 12:07:46,152 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 145 SyntacticMatches, 19 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 2789.9ms TimeCoverageRelationStatistics Valid=342, Invalid=6630, Unknown=0, NotChecked=0, Total=6972 [2021-05-02 12:07:46,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-05-02 12:07:46,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2021-05-02 12:07:46,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 49 states have (on average 1.0204081632653061) internal successors, (50), 49 states have internal predecessors, (50), 23 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-05-02 12:07:46,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 94 transitions. [2021-05-02 12:07:46,159 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 94 transitions. Word has length 125 [2021-05-02 12:07:46,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:07:46,159 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 94 transitions. [2021-05-02 12:07:46,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 44 states, 44 states have (on average 1.1363636363636365) internal successors, (50), 24 states have internal predecessors, (50), 21 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-05-02 12:07:46,159 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 94 transitions. [2021-05-02 12:07:46,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-05-02 12:07:46,160 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:07:46,160 INFO L523 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:07:46,373 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:07:46,373 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:07:46,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:07:46,374 INFO L82 PathProgramCache]: Analyzing trace with hash -2100635266, now seen corresponding path program 20 times [2021-05-02 12:07:46,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:07:46,374 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903766488] [2021-05-02 12:07:46,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:07:46,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:47,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:07:47,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:47,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:07:47,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:47,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:07:47,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:47,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:07:47,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:47,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:07:47,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:47,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:07:47,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:47,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:07:47,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:47,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:07:47,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:47,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:07:47,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:47,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:07:47,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:47,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:07:47,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:47,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:07:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:47,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:07:47,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:47,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:07:47,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:47,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:07:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:47,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:07:47,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:47,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:07:47,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:47,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:07:47,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:47,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:07:47,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:47,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:07:47,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:47,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:07:47,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:47,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1160 backedges. 0 proven. 590 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2021-05-02 12:07:47,378 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:07:47,378 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903766488] [2021-05-02 12:07:47,379 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903766488] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:07:47,379 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840287154] [2021-05-02 12:07:47,379 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 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 12:07:47,450 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:07:47,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:07:47,453 WARN L261 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 203 conjunts are in the unsatisfiable core [2021-05-02 12:07:47,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:07:47,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:47,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:47,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:47,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:47,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:47,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:47,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:47,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:47,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:47,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:47,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:47,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:47,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:47,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:47,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:47,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:47,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:47,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:47,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:47,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:47,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:47,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:47,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:47,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:47,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:47,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:47,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:47,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:47,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:47,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:47,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:47,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:48,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:48,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:48,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:48,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:48,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:48,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:48,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:48,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:48,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:48,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:48,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:48,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:48,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:48,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:48,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:48,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:48,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:48,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:48,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:48,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:48,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:48,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:48,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:48,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:48,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:48,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:48,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1160 backedges. 0 proven. 590 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2021-05-02 12:07:48,425 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840287154] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:07:48,425 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:07:48,425 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44] total 46 [2021-05-02 12:07:48,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667403958] [2021-05-02 12:07:48,426 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-05-02 12:07:48,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:07:48,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-05-02 12:07:48,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1960, Unknown=0, NotChecked=0, Total=2070 [2021-05-02 12:07:48,427 INFO L87 Difference]: Start difference. First operand 75 states and 94 transitions. Second operand has 46 states, 46 states have (on average 1.1304347826086956) internal successors, (52), 25 states have internal predecessors, (52), 22 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-05-02 12:07:51,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:07:51,186 INFO L93 Difference]: Finished difference Result 85 states and 106 transitions. [2021-05-02 12:07:51,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-02 12:07:51,187 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.1304347826086956) internal successors, (52), 25 states have internal predecessors, (52), 22 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Word has length 131 [2021-05-02 12:07:51,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:07:51,188 INFO L225 Difference]: With dead ends: 85 [2021-05-02 12:07:51,188 INFO L226 Difference]: Without dead ends: 80 [2021-05-02 12:07:51,188 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 152 SyntacticMatches, 20 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 3073.6ms TimeCoverageRelationStatistics Valid=359, Invalid=7297, Unknown=0, NotChecked=0, Total=7656 [2021-05-02 12:07:51,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-05-02 12:07:51,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2021-05-02 12:07:51,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 51 states have (on average 1.0196078431372548) internal successors, (52), 51 states have internal predecessors, (52), 24 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-05-02 12:07:51,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 98 transitions. [2021-05-02 12:07:51,195 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 98 transitions. Word has length 131 [2021-05-02 12:07:51,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:07:51,196 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 98 transitions. [2021-05-02 12:07:51,196 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 46 states, 46 states have (on average 1.1304347826086956) internal successors, (52), 25 states have internal predecessors, (52), 22 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-05-02 12:07:51,196 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 98 transitions. [2021-05-02 12:07:51,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-05-02 12:07:51,196 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:07:51,196 INFO L523 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:07:51,397 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-05-02 12:07:51,397 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:07:51,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:07:51,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1330921948, now seen corresponding path program 21 times [2021-05-02 12:07:51,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:07:51,397 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116440483] [2021-05-02 12:07:51,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:07:51,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:52,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:07:52,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:52,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:07:52,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:52,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:07:52,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:52,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:07:52,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:52,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:07:52,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:52,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:07:52,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:52,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:07:52,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:52,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:07:52,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:52,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:07:52,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:52,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:07:52,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:52,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:07:52,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:52,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:07:52,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:52,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:07:52,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:52,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:07:52,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:52,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:07:52,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:52,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:07:52,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:52,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:07:52,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:52,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:07:52,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:52,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:07:52,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:52,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:07:52,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:52,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:07:52,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:52,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:07:52,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:52,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1281 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2021-05-02 12:07:52,448 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:07:52,448 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116440483] [2021-05-02 12:07:52,448 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116440483] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:07:52,448 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105669881] [2021-05-02 12:07:52,448 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 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 12:07:53,841 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-05-02 12:07:53,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:07:53,845 WARN L261 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 221 conjunts are in the unsatisfiable core [2021-05-02 12:07:53,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:07:53,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:53,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:53,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:53,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:53,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:53,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:54,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:55,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:55,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:55,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:55,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:55,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:55,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1281 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2021-05-02 12:07:55,137 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105669881] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:07:55,137 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:07:55,137 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46] total 48 [2021-05-02 12:07:55,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587808140] [2021-05-02 12:07:55,138 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-05-02 12:07:55,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:07:55,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-05-02 12:07:55,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=2141, Unknown=0, NotChecked=0, Total=2256 [2021-05-02 12:07:55,138 INFO L87 Difference]: Start difference. First operand 78 states and 98 transitions. Second operand has 48 states, 48 states have (on average 1.125) internal successors, (54), 26 states have internal predecessors, (54), 23 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-05-02 12:07:58,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:07:58,198 INFO L93 Difference]: Finished difference Result 88 states and 110 transitions. [2021-05-02 12:07:58,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-02 12:07:58,198 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.125) internal successors, (54), 26 states have internal predecessors, (54), 23 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 137 [2021-05-02 12:07:58,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:07:58,199 INFO L225 Difference]: With dead ends: 88 [2021-05-02 12:07:58,199 INFO L226 Difference]: Without dead ends: 83 [2021-05-02 12:07:58,200 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 151 SyntacticMatches, 29 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 966 ImplicationChecksByTransitivity, 3685.3ms TimeCoverageRelationStatistics Valid=376, Invalid=7996, Unknown=0, NotChecked=0, Total=8372 [2021-05-02 12:07:58,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-05-02 12:07:58,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2021-05-02 12:07:58,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 53 states have (on average 1.0188679245283019) internal successors, (54), 53 states have internal predecessors, (54), 25 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-05-02 12:07:58,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 102 transitions. [2021-05-02 12:07:58,207 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 102 transitions. Word has length 137 [2021-05-02 12:07:58,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:07:58,207 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 102 transitions. [2021-05-02 12:07:58,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 48 states, 48 states have (on average 1.125) internal successors, (54), 26 states have internal predecessors, (54), 23 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-05-02 12:07:58,208 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 102 transitions. [2021-05-02 12:07:58,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-05-02 12:07:58,208 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:07:58,208 INFO L523 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:07:58,411 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-05-02 12:07:58,412 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:07:58,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:07:58,412 INFO L82 PathProgramCache]: Analyzing trace with hash -977704006, now seen corresponding path program 22 times [2021-05-02 12:07:58,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:07:58,412 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054743229] [2021-05-02 12:07:58,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:07:58,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:59,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:07:59,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:59,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:07:59,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:59,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:07:59,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:59,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:07:59,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:59,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:07:59,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:59,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:07:59,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:59,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:07:59,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:59,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:07:59,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:59,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:07:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:59,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:07:59,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:59,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:07:59,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:59,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:07:59,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:59,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:07:59,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:59,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:07:59,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:59,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:07:59,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:59,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:07:59,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:59,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:07:59,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:59,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:07:59,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:59,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:07:59,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:59,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:07:59,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:59,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:07:59,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:59,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:07:59,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:59,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:07:59,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:59,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1408 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 693 trivial. 0 not checked. [2021-05-02 12:07:59,566 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:07:59,566 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054743229] [2021-05-02 12:07:59,566 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054743229] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:07:59,566 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316340177] [2021-05-02 12:07:59,566 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 12:07:59,638 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:07:59,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:07:59,641 WARN L261 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 223 conjunts are in the unsatisfiable core [2021-05-02 12:07:59,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:07:59,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:59,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:59,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:59,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:59,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:59,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:59,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:59,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:59,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:59,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:59,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:59,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:59,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:59,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:59,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:59,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:59,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:59,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:59,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:59,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:00,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:00,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:00,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:00,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:00,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:00,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:00,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:00,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:00,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:00,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:00,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:00,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:00,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:00,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:00,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:00,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:00,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:00,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:00,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:00,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:00,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:00,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:00,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:00,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:00,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:00,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:00,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:00,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:00,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:00,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:00,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:00,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:00,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:00,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:00,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:00,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:00,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:00,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:00,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:00,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:00,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:00,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:00,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:00,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:00,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1408 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 693 trivial. 0 not checked. [2021-05-02 12:08:00,776 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316340177] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:08:00,777 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:08:00,777 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 48] total 50 [2021-05-02 12:08:00,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127504793] [2021-05-02 12:08:00,777 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states [2021-05-02 12:08:00,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:08:00,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-05-02 12:08:00,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=2330, Unknown=0, NotChecked=0, Total=2450 [2021-05-02 12:08:00,778 INFO L87 Difference]: Start difference. First operand 81 states and 102 transitions. Second operand has 50 states, 50 states have (on average 1.12) internal successors, (56), 27 states have internal predecessors, (56), 24 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-05-02 12:08:03,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:08:03,987 INFO L93 Difference]: Finished difference Result 91 states and 114 transitions. [2021-05-02 12:08:03,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-05-02 12:08:03,987 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.12) internal successors, (56), 27 states have internal predecessors, (56), 24 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Word has length 143 [2021-05-02 12:08:03,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:08:03,988 INFO L225 Difference]: With dead ends: 91 [2021-05-02 12:08:03,988 INFO L226 Difference]: Without dead ends: 86 [2021-05-02 12:08:03,989 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 166 SyntacticMatches, 22 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1039 ImplicationChecksByTransitivity, 3690.8ms TimeCoverageRelationStatistics Valid=393, Invalid=8727, Unknown=0, NotChecked=0, Total=9120 [2021-05-02 12:08:03,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-05-02 12:08:03,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2021-05-02 12:08:03,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 55 states have (on average 1.018181818181818) internal successors, (56), 55 states have internal predecessors, (56), 26 states have call successors, (26), 4 states have call predecessors, (26), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-05-02 12:08:03,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 106 transitions. [2021-05-02 12:08:03,996 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 106 transitions. Word has length 143 [2021-05-02 12:08:03,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:08:03,997 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 106 transitions. [2021-05-02 12:08:03,997 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 50 states, 50 states have (on average 1.12) internal successors, (56), 27 states have internal predecessors, (56), 24 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-05-02 12:08:03,997 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 106 transitions. [2021-05-02 12:08:03,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-05-02 12:08:03,997 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:08:03,998 INFO L523 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:08:04,213 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:08:04,213 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:08:04,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:08:04,214 INFO L82 PathProgramCache]: Analyzing trace with hash -612157672, now seen corresponding path program 23 times [2021-05-02 12:08:04,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:08:04,214 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536476086] [2021-05-02 12:08:04,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:08:04,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:05,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:08:05,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:05,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:08:05,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:05,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:08:05,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:05,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:08:05,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:05,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:08:05,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:05,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:08:05,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:05,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:08:05,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:05,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:08:05,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:05,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:08:05,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:05,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:08:05,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:05,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:08:05,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:05,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:08:05,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:05,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:08:05,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:05,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:08:05,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:05,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:08:05,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:05,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:08:05,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:05,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:08:05,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:05,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:08:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:05,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:08:05,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:05,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:08:05,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:05,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:08:05,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:05,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:08:05,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:05,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:08:05,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:05,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:08:05,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:05,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1541 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2021-05-02 12:08:05,429 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:08:05,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536476086] [2021-05-02 12:08:05,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536476086] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:08:05,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435351964] [2021-05-02 12:08:05,429 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 12:08:10,003 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2021-05-02 12:08:10,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:08:10,009 WARN L261 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 249 conjunts are in the unsatisfiable core [2021-05-02 12:08:10,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:08:10,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:10,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:10,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:10,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:10,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:10,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:10,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:10,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:10,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:10,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:10,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:10,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:10,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:10,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:10,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:10,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:10,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:10,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:10,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:10,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:10,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:10,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:10,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:10,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:10,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:10,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:10,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:10,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:10,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:10,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:10,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:10,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:10,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:10,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:10,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:10,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:10,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:10,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:10,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:10,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:10,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:10,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:10,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:10,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:10,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:11,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:11,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:11,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:11,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:11,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:11,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:11,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:11,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:11,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:11,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:11,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:11,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:11,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:11,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:11,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:11,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:11,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:11,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:11,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:11,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:11,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:11,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:11,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1541 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2021-05-02 12:08:11,583 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435351964] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:08:11,583 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:08:11,583 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50] total 52 [2021-05-02 12:08:11,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51695098] [2021-05-02 12:08:11,584 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-05-02 12:08:11,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:08:11,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-05-02 12:08:11,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=2527, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 12:08:11,584 INFO L87 Difference]: Start difference. First operand 84 states and 106 transitions. Second operand has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 28 states have internal predecessors, (58), 25 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-05-02 12:08:15,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:08:15,013 INFO L93 Difference]: Finished difference Result 94 states and 118 transitions. [2021-05-02 12:08:15,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-02 12:08:15,013 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 28 states have internal predecessors, (58), 25 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 149 [2021-05-02 12:08:15,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:08:15,014 INFO L225 Difference]: With dead ends: 94 [2021-05-02 12:08:15,014 INFO L226 Difference]: Without dead ends: 89 [2021-05-02 12:08:15,015 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 157 SyntacticMatches, 39 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1163 ImplicationChecksByTransitivity, 4285.9ms TimeCoverageRelationStatistics Valid=410, Invalid=9490, Unknown=0, NotChecked=0, Total=9900 [2021-05-02 12:08:15,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-05-02 12:08:15,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 87. [2021-05-02 12:08:15,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 57 states have (on average 1.0175438596491229) internal successors, (58), 57 states have internal predecessors, (58), 27 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-05-02 12:08:15,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 110 transitions. [2021-05-02 12:08:15,023 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 110 transitions. Word has length 149 [2021-05-02 12:08:15,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:08:15,023 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 110 transitions. [2021-05-02 12:08:15,023 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 28 states have internal predecessors, (58), 25 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-05-02 12:08:15,023 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 110 transitions. [2021-05-02 12:08:15,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-05-02 12:08:15,024 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:08:15,024 INFO L523 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:08:15,228 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-05-02 12:08:15,228 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:08:15,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:08:15,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1273854986, now seen corresponding path program 24 times [2021-05-02 12:08:15,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:08:15,229 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157396246] [2021-05-02 12:08:15,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:08:15,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:16,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:08:16,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:16,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:08:16,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:16,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:08:16,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:16,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:08:16,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:16,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:08:16,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:16,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:08:16,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:16,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:08:16,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:16,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:08:16,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:16,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:08:16,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:16,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:08:16,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:16,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:08:16,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:16,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:08:16,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:16,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:08:16,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:16,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:08:16,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:16,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:08:16,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:16,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:08:16,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:16,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:08:16,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:16,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:08:16,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:16,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:08:16,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:16,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:08:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:16,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:08:16,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:16,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:08:16,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:16,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:08:16,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:16,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:08:16,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:16,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 12:08:16,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:16,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1680 backedges. 0 proven. 852 refuted. 0 times theorem prover too weak. 828 trivial. 0 not checked. [2021-05-02 12:08:16,728 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:08:16,728 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157396246] [2021-05-02 12:08:16,728 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157396246] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:08:16,728 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967777006] [2021-05-02 12:08:16,728 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 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 12:08:18,666 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-05-02 12:08:18,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:08:18,671 WARN L261 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 246 conjunts are in the unsatisfiable core [2021-05-02 12:08:18,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:08:18,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:18,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:18,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:18,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:18,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:18,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:18,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:18,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:18,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:18,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:18,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:18,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:18,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:18,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:19,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:20,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:20,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:20,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1680 backedges. 0 proven. 852 refuted. 0 times theorem prover too weak. 828 trivial. 0 not checked. [2021-05-02 12:08:20,067 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967777006] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:08:20,067 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:08:20,067 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 52] total 54 [2021-05-02 12:08:20,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135188781] [2021-05-02 12:08:20,068 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-05-02 12:08:20,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:08:20,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-05-02 12:08:20,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=2732, Unknown=0, NotChecked=0, Total=2862 [2021-05-02 12:08:20,068 INFO L87 Difference]: Start difference. First operand 87 states and 110 transitions. Second operand has 54 states, 54 states have (on average 1.1111111111111112) internal successors, (60), 29 states have internal predecessors, (60), 26 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-05-02 12:08:23,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:08:23,765 INFO L93 Difference]: Finished difference Result 97 states and 122 transitions. [2021-05-02 12:08:23,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-02 12:08:23,766 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.1111111111111112) internal successors, (60), 29 states have internal predecessors, (60), 26 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Word has length 155 [2021-05-02 12:08:23,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:08:23,766 INFO L225 Difference]: With dead ends: 97 [2021-05-02 12:08:23,766 INFO L226 Difference]: Without dead ends: 92 [2021-05-02 12:08:23,767 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 177 SyntacticMatches, 27 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1235 ImplicationChecksByTransitivity, 4503.5ms TimeCoverageRelationStatistics Valid=427, Invalid=10285, Unknown=0, NotChecked=0, Total=10712 [2021-05-02 12:08:23,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-05-02 12:08:23,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90. [2021-05-02 12:08:23,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 59 states have (on average 1.0169491525423728) internal successors, (60), 59 states have internal predecessors, (60), 28 states have call successors, (28), 4 states have call predecessors, (28), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-05-02 12:08:23,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 114 transitions. [2021-05-02 12:08:23,776 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 114 transitions. Word has length 155 [2021-05-02 12:08:23,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:08:23,776 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 114 transitions. [2021-05-02 12:08:23,776 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 54 states, 54 states have (on average 1.1111111111111112) internal successors, (60), 29 states have internal predecessors, (60), 26 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-05-02 12:08:23,777 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 114 transitions. [2021-05-02 12:08:23,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-05-02 12:08:23,777 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:08:23,777 INFO L523 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:08:23,981 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:08:23,981 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:08:23,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:08:23,981 INFO L82 PathProgramCache]: Analyzing trace with hash -559926700, now seen corresponding path program 25 times [2021-05-02 12:08:23,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:08:23,981 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567499551] [2021-05-02 12:08:23,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:08:23,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:25,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:08:25,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:25,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:08:25,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:25,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:08:25,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:25,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:08:25,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:25,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:08:25,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:25,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:08:25,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:25,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:08:25,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:25,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:08:25,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:25,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:08:25,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:25,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:08:25,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:25,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:08:25,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:25,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:08:25,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:25,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:08:25,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:25,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:08:25,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:25,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:08:25,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:25,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:08:25,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:25,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:08:25,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:25,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:08:25,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:25,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:08:25,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:25,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:08:25,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:25,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:08:25,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:25,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:08:25,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:25,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:08:25,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:25,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:08:25,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:25,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 12:08:25,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:25,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 12:08:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:25,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1825 backedges. 0 proven. 925 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2021-05-02 12:08:25,394 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:08:25,394 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567499551] [2021-05-02 12:08:25,394 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567499551] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:08:25,394 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445159425] [2021-05-02 12:08:25,394 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 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 12:08:25,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:25,469 WARN L261 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 253 conjunts are in the unsatisfiable core [2021-05-02 12:08:25,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:08:25,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1825 backedges. 0 proven. 925 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2021-05-02 12:08:26,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445159425] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:08:26,913 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:08:26,913 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 54] total 56 [2021-05-02 12:08:26,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031819385] [2021-05-02 12:08:26,913 INFO L460 AbstractCegarLoop]: Interpolant automaton has 56 states [2021-05-02 12:08:26,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:08:26,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-05-02 12:08:26,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=2945, Unknown=0, NotChecked=0, Total=3080 [2021-05-02 12:08:26,914 INFO L87 Difference]: Start difference. First operand 90 states and 114 transitions. Second operand has 56 states, 56 states have (on average 1.1071428571428572) internal successors, (62), 30 states have internal predecessors, (62), 27 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-05-02 12:08:30,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:08:30,883 INFO L93 Difference]: Finished difference Result 100 states and 126 transitions. [2021-05-02 12:08:30,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-05-02 12:08:30,883 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.1071428571428572) internal successors, (62), 30 states have internal predecessors, (62), 27 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 161 [2021-05-02 12:08:30,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:08:30,884 INFO L225 Difference]: With dead ends: 100 [2021-05-02 12:08:30,884 INFO L226 Difference]: Without dead ends: 95 [2021-05-02 12:08:30,885 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 187 SyntacticMatches, 25 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1330 ImplicationChecksByTransitivity, 4580.9ms TimeCoverageRelationStatistics Valid=444, Invalid=11112, Unknown=0, NotChecked=0, Total=11556 [2021-05-02 12:08:30,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-05-02 12:08:30,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 93. [2021-05-02 12:08:30,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 61 states have (on average 1.0163934426229508) internal successors, (62), 61 states have internal predecessors, (62), 29 states have call successors, (29), 4 states have call predecessors, (29), 2 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-05-02 12:08:30,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 118 transitions. [2021-05-02 12:08:30,894 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 118 transitions. Word has length 161 [2021-05-02 12:08:30,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:08:30,894 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 118 transitions. [2021-05-02 12:08:30,894 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 56 states, 56 states have (on average 1.1071428571428572) internal successors, (62), 30 states have internal predecessors, (62), 27 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-05-02 12:08:30,894 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 118 transitions. [2021-05-02 12:08:30,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-05-02 12:08:30,895 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:08:30,895 INFO L523 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:08:31,105 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-05-02 12:08:31,105 INFO L428 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:08:31,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:08:31,106 INFO L82 PathProgramCache]: Analyzing trace with hash 339550770, now seen corresponding path program 26 times [2021-05-02 12:08:31,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:08:31,106 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402229423] [2021-05-02 12:08:31,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:08:31,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:32,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:08:32,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:32,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:08:32,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:32,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:08:32,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:32,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:08:32,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:32,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:08:32,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:32,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:08:32,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:32,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:08:32,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:32,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:08:32,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:32,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:08:32,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:32,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:08:32,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:32,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:08:32,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:32,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:08:32,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:32,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:08:32,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:32,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:08:32,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:32,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:08:32,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:32,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:08:32,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:32,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:08:32,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:32,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:08:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:32,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:08:32,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:32,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:08:32,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:32,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:08:32,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:32,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:08:32,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:32,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:08:32,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:32,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:08:32,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:32,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 12:08:32,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:32,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 12:08:32,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:32,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 12:08:32,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:32,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1976 backedges. 0 proven. 1001 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2021-05-02 12:08:32,634 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:08:32,634 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402229423] [2021-05-02 12:08:32,634 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402229423] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:08:32,634 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606429763] [2021-05-02 12:08:32,635 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 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 12:08:32,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:08:32,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:08:32,710 WARN L261 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 263 conjunts are in the unsatisfiable core [2021-05-02 12:08:32,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:08:32,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:32,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:32,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:32,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:32,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:32,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:32,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:32,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:32,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:32,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:32,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:32,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:33,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:34,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:34,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:34,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:34,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:34,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:34,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:34,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:34,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:34,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:34,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:34,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:34,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1976 backedges. 0 proven. 1001 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2021-05-02 12:08:34,270 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606429763] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:08:34,270 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:08:34,270 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56] total 58 [2021-05-02 12:08:34,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721268050] [2021-05-02 12:08:34,271 INFO L460 AbstractCegarLoop]: Interpolant automaton has 58 states [2021-05-02 12:08:34,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:08:34,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-05-02 12:08:34,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=3166, Unknown=0, NotChecked=0, Total=3306 [2021-05-02 12:08:34,271 INFO L87 Difference]: Start difference. First operand 93 states and 118 transitions. Second operand has 58 states, 58 states have (on average 1.103448275862069) internal successors, (64), 31 states have internal predecessors, (64), 28 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-05-02 12:08:38,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:08:38,581 INFO L93 Difference]: Finished difference Result 103 states and 130 transitions. [2021-05-02 12:08:38,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-02 12:08:38,583 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.103448275862069) internal successors, (64), 31 states have internal predecessors, (64), 28 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Word has length 167 [2021-05-02 12:08:38,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:08:38,584 INFO L225 Difference]: With dead ends: 103 [2021-05-02 12:08:38,584 INFO L226 Difference]: Without dead ends: 98 [2021-05-02 12:08:38,584 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 194 SyntacticMatches, 26 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1435 ImplicationChecksByTransitivity, 4967.1ms TimeCoverageRelationStatistics Valid=461, Invalid=11971, Unknown=0, NotChecked=0, Total=12432 [2021-05-02 12:08:38,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-05-02 12:08:38,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2021-05-02 12:08:38,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 63 states have (on average 1.0158730158730158) internal successors, (64), 63 states have internal predecessors, (64), 30 states have call successors, (30), 4 states have call predecessors, (30), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-05-02 12:08:38,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 122 transitions. [2021-05-02 12:08:38,594 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 122 transitions. Word has length 167 [2021-05-02 12:08:38,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:08:38,594 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 122 transitions. [2021-05-02 12:08:38,594 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 58 states, 58 states have (on average 1.103448275862069) internal successors, (64), 31 states have internal predecessors, (64), 28 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-05-02 12:08:38,594 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 122 transitions. [2021-05-02 12:08:38,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-05-02 12:08:38,595 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:08:38,595 INFO L523 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:08:38,808 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-05-02 12:08:38,809 INFO L428 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:08:38,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:08:38,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1976710032, now seen corresponding path program 27 times [2021-05-02 12:08:38,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:08:38,809 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034264315] [2021-05-02 12:08:38,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:08:38,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:40,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:08:40,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:40,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:08:40,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:40,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:08:40,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:40,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:08:40,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:40,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:08:40,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:40,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:08:40,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:40,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:08:40,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:40,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:08:40,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:40,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:08:40,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:40,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:08:40,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:40,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:08:40,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:40,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:08:40,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:40,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:08:40,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:40,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:08:40,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:40,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:08:40,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:40,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:08:40,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:40,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:08:40,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:40,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:08:40,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:40,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:08:40,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:40,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:08:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:40,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:08:40,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:40,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:08:40,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:40,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:08:40,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:40,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:08:40,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:40,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 12:08:40,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:40,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 12:08:40,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:40,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 12:08:40,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:40,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 12:08:40,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:40,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2133 backedges. 0 proven. 1080 refuted. 0 times theorem prover too weak. 1053 trivial. 0 not checked. [2021-05-02 12:08:40,397 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:08:40,397 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034264315] [2021-05-02 12:08:40,397 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034264315] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:08:40,397 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237402713] [2021-05-02 12:08:40,397 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 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 12:08:44,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2021-05-02 12:08:44,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:08:44,758 WARN L261 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 282 conjunts are in the unsatisfiable core [2021-05-02 12:08:44,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:08:44,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:44,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:44,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:44,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:44,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:44,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:44,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:44,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:44,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:45,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:45,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:45,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:45,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:45,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:45,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:45,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:45,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:45,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:45,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:45,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:45,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:45,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:45,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:45,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:45,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:45,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:45,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:45,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:45,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:45,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:45,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:45,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:45,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:45,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:45,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:45,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:45,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:45,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:45,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:45,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:45,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:45,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:45,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:45,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:45,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:45,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:45,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:45,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:45,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:45,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:45,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:45,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:45,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:45,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:46,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:46,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:46,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:46,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:46,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:46,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:46,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:46,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:46,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:46,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:46,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:46,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:46,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:46,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:46,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:46,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:46,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:46,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:46,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:46,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:46,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:46,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:46,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:46,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:46,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:46,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2133 backedges. 0 proven. 1080 refuted. 0 times theorem prover too weak. 1053 trivial. 0 not checked. [2021-05-02 12:08:46,792 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237402713] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:08:46,792 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:08:46,792 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 58] total 60 [2021-05-02 12:08:46,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234039954] [2021-05-02 12:08:46,792 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states [2021-05-02 12:08:46,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:08:46,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-05-02 12:08:46,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=3395, Unknown=0, NotChecked=0, Total=3540 [2021-05-02 12:08:46,793 INFO L87 Difference]: Start difference. First operand 96 states and 122 transitions. Second operand has 60 states, 60 states have (on average 1.1) internal successors, (66), 32 states have internal predecessors, (66), 29 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-05-02 12:08:51,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:08:51,342 INFO L93 Difference]: Finished difference Result 106 states and 134 transitions. [2021-05-02 12:08:51,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-05-02 12:08:51,343 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.1) internal successors, (66), 32 states have internal predecessors, (66), 29 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 173 [2021-05-02 12:08:51,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:08:51,343 INFO L225 Difference]: With dead ends: 106 [2021-05-02 12:08:51,344 INFO L226 Difference]: Without dead ends: 101 [2021-05-02 12:08:51,344 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 192 SyntacticMatches, 36 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1562 ImplicationChecksByTransitivity, 5648.1ms TimeCoverageRelationStatistics Valid=478, Invalid=12862, Unknown=0, NotChecked=0, Total=13340 [2021-05-02 12:08:51,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-05-02 12:08:51,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 99. [2021-05-02 12:08:51,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 65 states have (on average 1.0153846153846153) internal successors, (66), 65 states have internal predecessors, (66), 31 states have call successors, (31), 4 states have call predecessors, (31), 2 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2021-05-02 12:08:51,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 126 transitions. [2021-05-02 12:08:51,354 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 126 transitions. Word has length 173 [2021-05-02 12:08:51,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:08:51,355 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 126 transitions. [2021-05-02 12:08:51,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 60 states, 60 states have (on average 1.1) internal successors, (66), 32 states have internal predecessors, (66), 29 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-05-02 12:08:51,355 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 126 transitions. [2021-05-02 12:08:51,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-05-02 12:08:51,355 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:08:51,356 INFO L523 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:08:51,560 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-05-02 12:08:51,560 INFO L428 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:08:51,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:08:51,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1243629166, now seen corresponding path program 28 times [2021-05-02 12:08:51,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:08:51,560 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593432450] [2021-05-02 12:08:51,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:08:51,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:53,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:08:53,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:53,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:08:53,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:53,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:08:53,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:53,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:08:53,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:53,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:08:53,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:53,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:08:53,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:53,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:08:53,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:53,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:08:53,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:53,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:08:53,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:53,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:08:53,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:53,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:08:53,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:53,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:08:53,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:53,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:08:53,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:53,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:08:53,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:53,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:08:53,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:53,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:08:53,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:53,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:08:53,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:53,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:08:53,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:53,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:08:53,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:53,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:08:53,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:53,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:08:53,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:53,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:08:53,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:53,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:08:53,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:53,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:08:53,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:53,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 12:08:53,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:53,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 12:08:53,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:53,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 12:08:53,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:53,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 12:08:53,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:53,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 12:08:53,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:53,315 INFO L134 CoverageAnalysis]: Checked inductivity of 2296 backedges. 0 proven. 1162 refuted. 0 times theorem prover too weak. 1134 trivial. 0 not checked. [2021-05-02 12:08:53,315 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:08:53,315 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593432450] [2021-05-02 12:08:53,315 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593432450] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:08:53,315 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030192809] [2021-05-02 12:08:53,315 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 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 12:08:53,392 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:08:53,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:08:53,395 WARN L261 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 283 conjunts are in the unsatisfiable core [2021-05-02 12:08:53,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:08:53,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:53,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:53,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:53,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:53,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:53,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:53,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:53,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:53,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:53,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:53,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:53,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:53,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:53,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:53,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:53,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:53,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:53,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:53,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:53,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:53,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:53,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:53,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:53,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:53,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:53,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:54,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:54,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:54,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:54,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:54,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:54,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:54,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:54,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:54,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:54,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:54,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:54,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:54,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:54,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:54,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:54,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:54,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:54,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:54,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:54,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:54,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:54,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:54,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:54,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:54,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:54,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:54,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:54,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:54,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:54,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:54,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:54,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:54,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:54,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:54,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:54,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:54,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:54,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:54,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:54,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:54,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:54,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:54,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:54,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:54,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:54,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:54,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:54,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:55,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:55,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:55,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:55,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:55,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:55,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:55,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:55,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:55,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2296 backedges. 0 proven. 1162 refuted. 0 times theorem prover too weak. 1134 trivial. 0 not checked. [2021-05-02 12:08:55,213 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030192809] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:08:55,213 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:08:55,213 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 60] total 62 [2021-05-02 12:08:55,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976851493] [2021-05-02 12:08:55,213 INFO L460 AbstractCegarLoop]: Interpolant automaton has 62 states [2021-05-02 12:08:55,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:08:55,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-05-02 12:08:55,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=3632, Unknown=0, NotChecked=0, Total=3782 [2021-05-02 12:08:55,214 INFO L87 Difference]: Start difference. First operand 99 states and 126 transitions. Second operand has 62 states, 62 states have (on average 1.096774193548387) internal successors, (68), 33 states have internal predecessors, (68), 30 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2021-05-02 12:09:00,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:09:00,165 INFO L93 Difference]: Finished difference Result 109 states and 138 transitions. [2021-05-02 12:09:00,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-05-02 12:09:00,166 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.096774193548387) internal successors, (68), 33 states have internal predecessors, (68), 30 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Word has length 179 [2021-05-02 12:09:00,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:09:00,166 INFO L225 Difference]: With dead ends: 109 [2021-05-02 12:09:00,167 INFO L226 Difference]: Without dead ends: 104 [2021-05-02 12:09:00,167 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 208 SyntacticMatches, 28 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1657 ImplicationChecksByTransitivity, 5767.9ms TimeCoverageRelationStatistics Valid=495, Invalid=13785, Unknown=0, NotChecked=0, Total=14280 [2021-05-02 12:09:00,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-05-02 12:09:00,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 102. [2021-05-02 12:09:00,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 67 states have (on average 1.0149253731343284) internal successors, (68), 67 states have internal predecessors, (68), 32 states have call successors, (32), 4 states have call predecessors, (32), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-05-02 12:09:00,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 130 transitions. [2021-05-02 12:09:00,178 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 130 transitions. Word has length 179 [2021-05-02 12:09:00,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:09:00,178 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 130 transitions. [2021-05-02 12:09:00,178 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 62 states, 62 states have (on average 1.096774193548387) internal successors, (68), 33 states have internal predecessors, (68), 30 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2021-05-02 12:09:00,178 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 130 transitions. [2021-05-02 12:09:00,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-05-02 12:09:00,179 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:09:00,179 INFO L523 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:09:00,392 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:09:00,393 INFO L428 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:09:00,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:09:00,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1002453708, now seen corresponding path program 29 times [2021-05-02 12:09:00,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:09:00,393 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056455010] [2021-05-02 12:09:00,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:09:00,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:02,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:09:02,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:02,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:09:02,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:02,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:09:02,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:02,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:09:02,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:02,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:09:02,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:02,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:09:02,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:02,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:09:02,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:02,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:09:02,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:02,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:09:02,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:02,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:09:02,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:02,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:09:02,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:02,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:09:02,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:02,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:09:02,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:02,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:09:02,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:02,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:09:02,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:02,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:09:02,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:02,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:09:02,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:02,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:09:02,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:02,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:09:02,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:02,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:09:02,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:02,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:09:02,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:02,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:09:02,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:02,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:09:02,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:02,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:09:02,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:02,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 12:09:02,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:02,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 12:09:02,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:02,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 12:09:02,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:02,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 12:09:02,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:02,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 12:09:02,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:02,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 12:09:02,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:02,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2465 backedges. 0 proven. 1247 refuted. 0 times theorem prover too weak. 1218 trivial. 0 not checked. [2021-05-02 12:09:02,211 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:09:02,211 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056455010] [2021-05-02 12:09:02,211 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056455010] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:09:02,211 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085731595] [2021-05-02 12:09:02,211 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 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 12:09:17,907 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2021-05-02 12:09:17,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:09:17,917 WARN L261 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 321 conjunts are in the unsatisfiable core [2021-05-02 12:09:17,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:09:18,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:20,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:20,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:20,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:20,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:20,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:20,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:20,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:20,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:20,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:20,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:20,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:20,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:20,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:20,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:20,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:20,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:20,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:20,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:20,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:20,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2465 backedges. 0 proven. 1247 refuted. 0 times theorem prover too weak. 1218 trivial. 0 not checked. [2021-05-02 12:09:20,646 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085731595] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:09:20,646 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:09:20,646 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 62] total 64 [2021-05-02 12:09:20,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249597549] [2021-05-02 12:09:20,646 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2021-05-02 12:09:20,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:09:20,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-05-02 12:09:20,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=3877, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 12:09:20,647 INFO L87 Difference]: Start difference. First operand 102 states and 130 transitions. Second operand has 64 states, 64 states have (on average 1.09375) internal successors, (70), 34 states have internal predecessors, (70), 31 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-05-02 12:09:26,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:09:26,068 INFO L93 Difference]: Finished difference Result 112 states and 142 transitions. [2021-05-02 12:09:26,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-02 12:09:26,069 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.09375) internal successors, (70), 34 states have internal predecessors, (70), 31 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 185 [2021-05-02 12:09:26,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:09:26,070 INFO L225 Difference]: With dead ends: 112 [2021-05-02 12:09:26,070 INFO L226 Difference]: Without dead ends: 107 [2021-05-02 12:09:26,070 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 187 SyntacticMatches, 57 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1829 ImplicationChecksByTransitivity, 6937.3ms TimeCoverageRelationStatistics Valid=512, Invalid=14740, Unknown=0, NotChecked=0, Total=15252 [2021-05-02 12:09:26,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-05-02 12:09:26,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2021-05-02 12:09:26,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 69 states have (on average 1.0144927536231885) internal successors, (70), 69 states have internal predecessors, (70), 33 states have call successors, (33), 4 states have call predecessors, (33), 2 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-05-02 12:09:26,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 134 transitions. [2021-05-02 12:09:26,082 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 134 transitions. Word has length 185 [2021-05-02 12:09:26,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:09:26,082 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 134 transitions. [2021-05-02 12:09:26,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 64 states, 64 states have (on average 1.09375) internal successors, (70), 34 states have internal predecessors, (70), 31 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-05-02 12:09:26,082 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 134 transitions. [2021-05-02 12:09:26,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-05-02 12:09:26,083 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:09:26,083 INFO L523 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:09:26,288 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-05-02 12:09:26,288 INFO L428 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:09:26,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:09:26,289 INFO L82 PathProgramCache]: Analyzing trace with hash 388165802, now seen corresponding path program 30 times [2021-05-02 12:09:26,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:09:26,289 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966801676] [2021-05-02 12:09:26,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:09:26,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:28,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:09:28,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:28,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:09:28,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:28,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:09:28,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:28,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:09:28,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:28,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:09:28,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:28,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:09:28,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:28,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:09:28,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:28,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:09:28,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:28,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:09:28,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:28,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:09:28,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:28,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:09:28,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:28,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:09:28,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:28,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:09:28,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:28,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:09:28,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:28,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:09:28,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:28,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:09:28,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:28,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:09:28,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:28,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:09:28,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:28,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:09:28,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:28,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:09:28,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:28,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:09:28,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:28,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:09:28,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:28,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:09:28,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:28,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:09:28,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:28,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 12:09:28,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:28,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 12:09:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:28,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 12:09:28,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:28,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 12:09:28,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:28,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 12:09:28,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:28,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 12:09:28,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:28,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 12:09:28,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:28,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2640 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 1305 trivial. 0 not checked. [2021-05-02 12:09:28,311 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:09:28,311 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966801676] [2021-05-02 12:09:28,311 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966801676] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:09:28,311 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673590480] [2021-05-02 12:09:28,311 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 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 12:09:35,043 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-05-02 12:09:35,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:09:35,052 WARN L261 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 336 conjunts are in the unsatisfiable core [2021-05-02 12:09:35,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:09:35,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:35,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:35,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:35,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:35,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:35,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:35,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:35,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:35,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:35,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:35,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:35,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:35,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:35,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:35,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:35,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:35,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:35,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:35,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:35,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:35,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:35,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:35,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:35,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:35,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:35,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:35,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:35,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:35,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:35,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:35,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:35,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:36,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:36,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:36,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:36,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:36,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:36,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:36,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:36,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:36,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:36,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:36,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:36,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:36,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:36,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:36,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:36,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:36,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:36,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:36,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:36,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:36,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:36,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:36,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:36,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:36,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:36,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:36,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:36,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:36,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:36,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:36,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:37,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:37,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:37,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:37,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:37,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:37,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:37,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:37,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:37,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:37,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:37,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:37,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:37,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:37,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:37,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:37,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:37,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:37,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:37,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:37,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:37,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:37,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:37,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:37,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:38,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2640 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 1305 trivial. 0 not checked. [2021-05-02 12:09:38,000 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673590480] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:09:38,000 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:09:38,000 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 64] total 66 [2021-05-02 12:09:38,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995219189] [2021-05-02 12:09:38,001 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states [2021-05-02 12:09:38,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:09:38,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-05-02 12:09:38,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=4130, Unknown=0, NotChecked=0, Total=4290 [2021-05-02 12:09:38,001 INFO L87 Difference]: Start difference. First operand 105 states and 134 transitions. Second operand has 66 states, 66 states have (on average 1.0909090909090908) internal successors, (72), 35 states have internal predecessors, (72), 32 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-05-02 12:09:43,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:09:43,706 INFO L93 Difference]: Finished difference Result 115 states and 146 transitions. [2021-05-02 12:09:43,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-05-02 12:09:43,706 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.0909090909090908) internal successors, (72), 35 states have internal predecessors, (72), 32 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Word has length 191 [2021-05-02 12:09:43,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:09:43,707 INFO L225 Difference]: With dead ends: 115 [2021-05-02 12:09:43,707 INFO L226 Difference]: Without dead ends: 110 [2021-05-02 12:09:43,708 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 194 SyntacticMatches, 58 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1949 ImplicationChecksByTransitivity, 7464.7ms TimeCoverageRelationStatistics Valid=529, Invalid=15727, Unknown=0, NotChecked=0, Total=16256 [2021-05-02 12:09:43,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-05-02 12:09:43,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 108. [2021-05-02 12:09:43,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 71 states have (on average 1.0140845070422535) internal successors, (72), 71 states have internal predecessors, (72), 34 states have call successors, (34), 4 states have call predecessors, (34), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-05-02 12:09:43,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 138 transitions. [2021-05-02 12:09:43,720 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 138 transitions. Word has length 191 [2021-05-02 12:09:43,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:09:43,721 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 138 transitions. [2021-05-02 12:09:43,721 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 66 states, 66 states have (on average 1.0909090909090908) internal successors, (72), 35 states have internal predecessors, (72), 32 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-05-02 12:09:43,721 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 138 transitions. [2021-05-02 12:09:43,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-05-02 12:09:43,722 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:09:43,722 INFO L523 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:09:43,926 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:09:43,927 INFO L428 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:09:43,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:09:43,927 INFO L82 PathProgramCache]: Analyzing trace with hash 143738888, now seen corresponding path program 31 times [2021-05-02 12:09:43,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:09:43,927 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775637609] [2021-05-02 12:09:43,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:09:43,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:45,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:09:45,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:45,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:09:45,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:46,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:09:46,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:46,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:09:46,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:46,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:09:46,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:46,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:09:46,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:46,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:09:46,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:46,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:09:46,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:46,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:09:46,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:46,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:09:46,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:46,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:09:46,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:46,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:09:46,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:46,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:09:46,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:46,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:09:46,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:46,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:09:46,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:46,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:09:46,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:46,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:09:46,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:46,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:09:46,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:46,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:09:46,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:46,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:09:46,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:46,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:09:46,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:46,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:09:46,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:46,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:09:46,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:46,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:09:46,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:46,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 12:09:46,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:46,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 12:09:46,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:46,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 12:09:46,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:46,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 12:09:46,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:46,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 12:09:46,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:46,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 12:09:46,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:46,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 12:09:46,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:46,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 12:09:46,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:46,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2821 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2021-05-02 12:09:46,079 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:09:46,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775637609] [2021-05-02 12:09:46,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775637609] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:09:46,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678509378] [2021-05-02 12:09:46,079 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 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 12:09:46,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:46,157 WARN L261 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 313 conjunts are in the unsatisfiable core [2021-05-02 12:09:46,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:09:46,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:46,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:46,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:46,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:46,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:46,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:46,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:46,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:46,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:46,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:46,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:46,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:46,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:46,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:46,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:46,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:46,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:46,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:46,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:46,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:46,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:46,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:46,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:46,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:46,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:46,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:46,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:46,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:46,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:46,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:46,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:46,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:47,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:47,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:47,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:47,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:47,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:47,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:47,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:47,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:47,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:47,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:47,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:47,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:47,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:47,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:47,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:47,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:47,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:47,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:47,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:47,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:47,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:47,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:47,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:47,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:47,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:47,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:47,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:47,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:47,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:47,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:47,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:47,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:47,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:47,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:47,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:47,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:47,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:47,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:47,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:47,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:47,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:47,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:48,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:48,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:48,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:48,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:48,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:48,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:48,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:48,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:48,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:48,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:48,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:48,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:48,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:48,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:48,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:48,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:48,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:48,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2821 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2021-05-02 12:09:48,473 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678509378] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:09:48,473 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:09:48,473 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 66] total 68 [2021-05-02 12:09:48,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705651136] [2021-05-02 12:09:48,473 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states [2021-05-02 12:09:48,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:09:48,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-05-02 12:09:48,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=4391, Unknown=0, NotChecked=0, Total=4556 [2021-05-02 12:09:48,474 INFO L87 Difference]: Start difference. First operand 108 states and 138 transitions. Second operand has 68 states, 68 states have (on average 1.088235294117647) internal successors, (74), 36 states have internal predecessors, (74), 33 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-05-02 12:09:54,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:09:54,783 INFO L93 Difference]: Finished difference Result 118 states and 150 transitions. [2021-05-02 12:09:54,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-05-02 12:09:54,783 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.088235294117647) internal successors, (74), 36 states have internal predecessors, (74), 33 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 197 [2021-05-02 12:09:54,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:09:54,784 INFO L225 Difference]: With dead ends: 118 [2021-05-02 12:09:54,784 INFO L226 Difference]: Without dead ends: 113 [2021-05-02 12:09:54,785 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 229 SyntacticMatches, 31 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2020 ImplicationChecksByTransitivity, 7260.9ms TimeCoverageRelationStatistics Valid=546, Invalid=16746, Unknown=0, NotChecked=0, Total=17292 [2021-05-02 12:09:54,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-05-02 12:09:54,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 111. [2021-05-02 12:09:54,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 73 states have (on average 1.0136986301369864) internal successors, (74), 73 states have internal predecessors, (74), 35 states have call successors, (35), 4 states have call predecessors, (35), 2 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-05-02 12:09:54,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 142 transitions. [2021-05-02 12:09:54,797 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 142 transitions. Word has length 197 [2021-05-02 12:09:54,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:09:54,797 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 142 transitions. [2021-05-02 12:09:54,797 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 68 states, 68 states have (on average 1.088235294117647) internal successors, (74), 36 states have internal predecessors, (74), 33 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-05-02 12:09:54,798 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 142 transitions. [2021-05-02 12:09:54,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-05-02 12:09:54,798 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:09:54,798 INFO L523 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:09:55,012 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-05-02 12:09:55,013 INFO L428 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:09:55,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:09:55,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1512841446, now seen corresponding path program 32 times [2021-05-02 12:09:55,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:09:55,013 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965887146] [2021-05-02 12:09:55,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:09:55,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:57,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:09:57,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:57,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:09:57,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:57,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:09:57,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:57,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:09:57,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:57,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:09:57,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:57,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:09:57,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:57,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:09:57,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:57,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:09:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:57,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:09:57,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:57,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:09:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:57,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:09:57,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:57,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:09:57,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:57,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:09:57,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:57,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:09:57,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:57,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:09:57,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:57,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:09:57,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:57,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:09:57,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:57,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:09:57,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:57,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:09:57,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:57,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:09:57,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:57,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:09:57,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:57,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:09:57,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:57,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:09:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:57,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:09:57,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:57,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 12:09:57,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:57,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 12:09:57,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:57,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 12:09:57,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:57,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 12:09:57,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:57,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 12:09:57,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:57,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 12:09:57,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:57,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 12:09:57,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:57,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 12:09:57,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:57,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 12:09:57,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:57,345 INFO L134 CoverageAnalysis]: Checked inductivity of 3008 backedges. 0 proven. 1520 refuted. 0 times theorem prover too weak. 1488 trivial. 0 not checked. [2021-05-02 12:09:57,345 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:09:57,345 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965887146] [2021-05-02 12:09:57,345 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965887146] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:09:57,345 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088855978] [2021-05-02 12:09:57,345 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 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 12:09:57,440 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:09:57,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:09:57,444 WARN L261 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 323 conjunts are in the unsatisfiable core [2021-05-02 12:09:57,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:09:57,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:57,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:57,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:57,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:57,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:57,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:57,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:57,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:57,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:57,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:57,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:57,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:57,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:57,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:57,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:57,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:57,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:57,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:57,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:57,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:58,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:58,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:58,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:58,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:58,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:58,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:58,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:58,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:58,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:58,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:58,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:58,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:58,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:58,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:58,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:58,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:58,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:58,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:58,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:58,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:58,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:58,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:58,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:58,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:58,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:58,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:58,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:58,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:58,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:58,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:58,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:58,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:58,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:58,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:58,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:58,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:58,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:58,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:58,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:58,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:58,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:58,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:59,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:59,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:59,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:59,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:59,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:59,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:59,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:59,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:59,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:59,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:59,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:59,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:59,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:59,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:59,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:59,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:59,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:59,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:59,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:59,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:59,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:59,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:59,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:59,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:59,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:59,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:59,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:59,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:59,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:59,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:59,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:59,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:59,887 INFO L134 CoverageAnalysis]: Checked inductivity of 3008 backedges. 0 proven. 1520 refuted. 0 times theorem prover too weak. 1488 trivial. 0 not checked. [2021-05-02 12:09:59,887 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088855978] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:09:59,888 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:09:59,888 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 68] total 70 [2021-05-02 12:09:59,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052143576] [2021-05-02 12:09:59,888 INFO L460 AbstractCegarLoop]: Interpolant automaton has 70 states [2021-05-02 12:09:59,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:09:59,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-05-02 12:09:59,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=4660, Unknown=0, NotChecked=0, Total=4830 [2021-05-02 12:09:59,889 INFO L87 Difference]: Start difference. First operand 111 states and 142 transitions. Second operand has 70 states, 70 states have (on average 1.0857142857142856) internal successors, (76), 37 states have internal predecessors, (76), 34 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-05-02 12:10:07,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:10:07,033 INFO L93 Difference]: Finished difference Result 121 states and 154 transitions. [2021-05-02 12:10:07,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-05-02 12:10:07,034 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 1.0857142857142856) internal successors, (76), 37 states have internal predecessors, (76), 34 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Word has length 203 [2021-05-02 12:10:07,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:10:07,035 INFO L225 Difference]: With dead ends: 121 [2021-05-02 12:10:07,035 INFO L226 Difference]: Without dead ends: 116 [2021-05-02 12:10:07,035 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 236 SyntacticMatches, 32 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2149 ImplicationChecksByTransitivity, 8016.8ms TimeCoverageRelationStatistics Valid=563, Invalid=17797, Unknown=0, NotChecked=0, Total=18360 [2021-05-02 12:10:07,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-05-02 12:10:07,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 114. [2021-05-02 12:10:07,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 75 states have (on average 1.0133333333333334) internal successors, (76), 75 states have internal predecessors, (76), 36 states have call successors, (36), 4 states have call predecessors, (36), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-05-02 12:10:07,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 146 transitions. [2021-05-02 12:10:07,065 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 146 transitions. Word has length 203 [2021-05-02 12:10:07,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:10:07,066 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 146 transitions. [2021-05-02 12:10:07,066 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 70 states, 70 states have (on average 1.0857142857142856) internal successors, (76), 37 states have internal predecessors, (76), 34 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-05-02 12:10:07,066 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 146 transitions. [2021-05-02 12:10:07,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-05-02 12:10:07,067 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:10:07,067 INFO L523 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:10:07,296 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-05-02 12:10:07,296 INFO L428 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:10:07,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:10:07,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1309910204, now seen corresponding path program 33 times [2021-05-02 12:10:07,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:10:07,297 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643270045] [2021-05-02 12:10:07,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:10:07,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:09,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:10:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:09,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:10:09,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:09,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:10:09,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:09,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:10:09,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:09,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:10:09,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:09,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:10:09,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:09,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:10:09,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:09,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:10:09,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:09,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:10:09,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:09,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:10:09,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:09,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:10:09,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:09,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:10:09,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:09,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:10:09,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:09,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:10:09,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:09,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:10:09,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:09,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:10:09,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:09,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:10:09,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:09,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:10:09,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:09,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:10:09,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:09,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:10:09,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:09,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:10:09,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:09,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:10:09,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:09,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:10:09,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:09,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:10:09,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:09,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 12:10:09,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:09,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 12:10:09,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:09,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 12:10:09,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:09,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 12:10:09,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:09,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 12:10:09,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:09,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 12:10:09,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:09,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 12:10:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:09,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 12:10:09,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:09,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 12:10:09,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:09,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 12:10:09,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:09,967 INFO L134 CoverageAnalysis]: Checked inductivity of 3201 backedges. 0 proven. 1617 refuted. 0 times theorem prover too weak. 1584 trivial. 0 not checked. [2021-05-02 12:10:09,967 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:10:09,967 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643270045] [2021-05-02 12:10:09,967 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643270045] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:10:09,967 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609040149] [2021-05-02 12:10:09,967 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 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 12:10:12,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2021-05-02 12:10:12,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:10:12,563 WARN L261 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 345 conjunts are in the unsatisfiable core [2021-05-02 12:10:12,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:10:12,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:12,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:12,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:12,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:12,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:12,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:12,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:12,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:12,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:12,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:12,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:13,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:13,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:13,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:13,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:13,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:13,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:13,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:13,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:13,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:13,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:13,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:13,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:13,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:13,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:13,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:13,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:13,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:13,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:13,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:13,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:13,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:13,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:13,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:13,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:13,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:13,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:13,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:13,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:13,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:13,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:13,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:13,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:13,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:13,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:13,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:13,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:14,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:14,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:14,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:14,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:14,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:14,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:14,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:14,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:14,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:14,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:14,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:14,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:14,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:14,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:14,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:14,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:14,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:14,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:14,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:14,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:14,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:14,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:14,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:14,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:14,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:14,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:14,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:14,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:14,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:14,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:14,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:14,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:14,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:14,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:15,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:15,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:15,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:15,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:15,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:15,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:15,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:15,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:15,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:15,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:15,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:15,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:15,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:15,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:15,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:15,832 INFO L134 CoverageAnalysis]: Checked inductivity of 3201 backedges. 0 proven. 1617 refuted. 0 times theorem prover too weak. 1584 trivial. 0 not checked. [2021-05-02 12:10:15,832 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609040149] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:10:15,832 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:10:15,832 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 70] total 72 [2021-05-02 12:10:15,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736881958] [2021-05-02 12:10:15,832 INFO L460 AbstractCegarLoop]: Interpolant automaton has 72 states [2021-05-02 12:10:15,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:10:15,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-05-02 12:10:15,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=4937, Unknown=0, NotChecked=0, Total=5112 [2021-05-02 12:10:15,833 INFO L87 Difference]: Start difference. First operand 114 states and 146 transitions. Second operand has 72 states, 72 states have (on average 1.0833333333333333) internal successors, (78), 38 states have internal predecessors, (78), 35 states have call successors, (37), 3 states have call predecessors, (37), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-05-02 12:10:23,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:10:23,383 INFO L93 Difference]: Finished difference Result 124 states and 158 transitions. [2021-05-02 12:10:23,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-05-02 12:10:23,388 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 1.0833333333333333) internal successors, (78), 38 states have internal predecessors, (78), 35 states have call successors, (37), 3 states have call predecessors, (37), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 209 [2021-05-02 12:10:23,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:10:23,388 INFO L225 Difference]: With dead ends: 124 [2021-05-02 12:10:23,388 INFO L226 Difference]: Without dead ends: 119 [2021-05-02 12:10:23,389 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 236 SyntacticMatches, 40 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2294 ImplicationChecksByTransitivity, 9249.8ms TimeCoverageRelationStatistics Valid=580, Invalid=18880, Unknown=0, NotChecked=0, Total=19460 [2021-05-02 12:10:23,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-05-02 12:10:23,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 117. [2021-05-02 12:10:23,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 77 states have (on average 1.0129870129870129) internal successors, (78), 77 states have internal predecessors, (78), 37 states have call successors, (37), 4 states have call predecessors, (37), 2 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-05-02 12:10:23,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 150 transitions. [2021-05-02 12:10:23,402 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 150 transitions. Word has length 209 [2021-05-02 12:10:23,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:10:23,403 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 150 transitions. [2021-05-02 12:10:23,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 72 states, 72 states have (on average 1.0833333333333333) internal successors, (78), 38 states have internal predecessors, (78), 35 states have call successors, (37), 3 states have call predecessors, (37), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-05-02 12:10:23,403 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 150 transitions. [2021-05-02 12:10:23,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-05-02 12:10:23,404 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:10:23,404 INFO L523 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:10:23,608 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-05-02 12:10:23,608 INFO L428 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:10:23,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:10:23,609 INFO L82 PathProgramCache]: Analyzing trace with hash -811411678, now seen corresponding path program 34 times [2021-05-02 12:10:23,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:10:23,609 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334334493] [2021-05-02 12:10:23,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:10:23,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:26,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:10:26,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:26,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:10:26,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:26,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:10:26,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:26,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:10:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:26,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:10:26,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:26,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:10:26,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:26,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:10:26,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:26,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:10:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:26,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:10:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:26,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:10:26,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:26,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:10:26,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:26,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:10:26,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:26,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:10:26,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:26,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:10:26,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:26,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:10:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:26,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:10:26,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:26,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:10:26,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:26,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:10:26,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:26,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:10:26,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:26,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:10:26,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:26,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:10:26,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:26,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:10:26,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:26,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:10:26,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:26,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:10:26,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:26,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 12:10:26,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:26,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 12:10:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:26,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 12:10:26,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:26,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 12:10:26,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:26,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 12:10:26,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:26,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 12:10:26,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:26,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 12:10:26,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:26,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 12:10:26,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:26,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 12:10:26,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:26,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 12:10:26,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:26,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 12:10:26,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:26,379 INFO L134 CoverageAnalysis]: Checked inductivity of 3400 backedges. 0 proven. 1717 refuted. 0 times theorem prover too weak. 1683 trivial. 0 not checked. [2021-05-02 12:10:26,379 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:10:26,379 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334334493] [2021-05-02 12:10:26,379 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334334493] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:10:26,379 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496804049] [2021-05-02 12:10:26,380 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 12:10:26,463 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:10:26,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:10:26,467 WARN L261 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 343 conjunts are in the unsatisfiable core [2021-05-02 12:10:26,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:10:26,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:26,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:26,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:26,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:26,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:26,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:26,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:26,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:26,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:26,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:26,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:26,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:26,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:26,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:26,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:26,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:26,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:27,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:27,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:27,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:27,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:27,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:27,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:27,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:27,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:27,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:27,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:27,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:27,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:27,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:27,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:27,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:27,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:27,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:27,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:27,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:27,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:27,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:27,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:27,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:27,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:27,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:27,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:27,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:27,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:27,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:27,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:27,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:27,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:27,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:27,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:27,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:27,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:28,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:28,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:28,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:28,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:28,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:28,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:28,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:28,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:28,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:28,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:28,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:28,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:28,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:28,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:28,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:28,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:28,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:28,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:28,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:28,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:28,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:28,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:28,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:28,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:28,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:28,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:28,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:28,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:28,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:28,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:28,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:28,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:28,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:28,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:28,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:28,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:29,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:29,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:29,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:29,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:29,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:29,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:29,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:29,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:29,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:29,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:29,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:29,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3400 backedges. 0 proven. 1717 refuted. 0 times theorem prover too weak. 1683 trivial. 0 not checked. [2021-05-02 12:10:29,387 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496804049] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:10:29,387 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:10:29,387 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 72] total 74 [2021-05-02 12:10:29,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090231929] [2021-05-02 12:10:29,387 INFO L460 AbstractCegarLoop]: Interpolant automaton has 74 states [2021-05-02 12:10:29,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:10:29,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2021-05-02 12:10:29,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=5222, Unknown=0, NotChecked=0, Total=5402 [2021-05-02 12:10:29,388 INFO L87 Difference]: Start difference. First operand 117 states and 150 transitions. Second operand has 74 states, 74 states have (on average 1.0810810810810811) internal successors, (80), 39 states have internal predecessors, (80), 36 states have call successors, (38), 3 states have call predecessors, (38), 2 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-05-02 12:10:37,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:10:37,375 INFO L93 Difference]: Finished difference Result 127 states and 162 transitions. [2021-05-02 12:10:37,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-05-02 12:10:37,376 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.0810810810810811) internal successors, (80), 39 states have internal predecessors, (80), 36 states have call successors, (38), 3 states have call predecessors, (38), 2 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Word has length 215 [2021-05-02 12:10:37,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:10:37,377 INFO L225 Difference]: With dead ends: 127 [2021-05-02 12:10:37,377 INFO L226 Difference]: Without dead ends: 122 [2021-05-02 12:10:37,378 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 250 SyntacticMatches, 34 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2419 ImplicationChecksByTransitivity, 9234.5ms TimeCoverageRelationStatistics Valid=597, Invalid=19995, Unknown=0, NotChecked=0, Total=20592 [2021-05-02 12:10:37,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-05-02 12:10:37,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2021-05-02 12:10:37,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 79 states have (on average 1.0126582278481013) internal successors, (80), 79 states have internal predecessors, (80), 38 states have call successors, (38), 4 states have call predecessors, (38), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2021-05-02 12:10:37,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 154 transitions. [2021-05-02 12:10:37,392 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 154 transitions. Word has length 215 [2021-05-02 12:10:37,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:10:37,392 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 154 transitions. [2021-05-02 12:10:37,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 74 states, 74 states have (on average 1.0810810810810811) internal successors, (80), 39 states have internal predecessors, (80), 36 states have call successors, (38), 3 states have call predecessors, (38), 2 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-05-02 12:10:37,392 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 154 transitions. [2021-05-02 12:10:37,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-05-02 12:10:37,393 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:10:37,393 INFO L523 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:10:37,609 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-05-02 12:10:37,609 INFO L428 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:10:37,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:10:37,609 INFO L82 PathProgramCache]: Analyzing trace with hash -889686912, now seen corresponding path program 35 times [2021-05-02 12:10:37,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:10:37,609 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742524636] [2021-05-02 12:10:37,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:10:37,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:40,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:10:40,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:40,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:10:40,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:40,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:10:40,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:40,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:10:40,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:40,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:10:40,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:40,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:10:40,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:40,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:10:40,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:40,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:10:40,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:40,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:10:40,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:40,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:10:40,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:40,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:10:40,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:40,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:10:40,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:40,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:10:40,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:40,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:10:40,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:40,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:10:40,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:40,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:10:40,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:40,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:10:40,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:40,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:10:40,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:40,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:10:40,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:40,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:10:40,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:40,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:10:40,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:40,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:10:40,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:40,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:10:40,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:40,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:10:40,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:40,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 12:10:40,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:40,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 12:10:40,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:40,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 12:10:40,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:40,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 12:10:40,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:40,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 12:10:40,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:40,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 12:10:40,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:40,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 12:10:40,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:40,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 12:10:40,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:40,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 12:10:40,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:40,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 12:10:40,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:40,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 12:10:40,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:40,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 12:10:40,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:40,583 INFO L134 CoverageAnalysis]: Checked inductivity of 3605 backedges. 0 proven. 1820 refuted. 0 times theorem prover too weak. 1785 trivial. 0 not checked. [2021-05-02 12:10:40,583 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:10:40,583 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742524636] [2021-05-02 12:10:40,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742524636] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:10:40,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722865119] [2021-05-02 12:10:40,584 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 12:11:08,121 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2021-05-02 12:11:08,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:11:08,130 WARN L261 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 379 conjunts are in the unsatisfiable core [2021-05-02 12:11:08,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:11:08,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:08,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:08,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:08,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:08,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:08,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:08,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:08,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:08,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:08,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:08,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:08,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:08,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:08,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:08,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:08,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:08,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:08,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:08,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:08,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:08,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:08,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:08,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:10,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:10,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:10,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:10,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:10,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:10,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:10,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:10,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:10,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:10,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:10,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:10,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:10,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:10,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:10,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:10,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:10,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:10,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:10,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:10,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:10,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:10,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:11,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:11,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:11,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:11,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:11,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:11,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:11,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:11,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:11,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:11,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:11,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:11,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:11,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:11,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:11,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:11,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:11,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:11,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:11,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:11,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:11,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:11,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:11,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:11,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:11,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:11,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:11,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:12,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:12,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:12,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:12,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:12,166 INFO L134 CoverageAnalysis]: Checked inductivity of 3605 backedges. 0 proven. 1820 refuted. 0 times theorem prover too weak. 1785 trivial. 0 not checked. [2021-05-02 12:11:12,166 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722865119] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:11:12,166 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:11:12,166 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 74] total 76 [2021-05-02 12:11:12,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853243640] [2021-05-02 12:11:12,167 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2021-05-02 12:11:12,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:11:12,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-05-02 12:11:12,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=5515, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 12:11:12,168 INFO L87 Difference]: Start difference. First operand 120 states and 154 transitions. Second operand has 76 states, 76 states have (on average 1.0789473684210527) internal successors, (82), 40 states have internal predecessors, (82), 37 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2021-05-02 12:11:20,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:11:20,627 INFO L93 Difference]: Finished difference Result 130 states and 166 transitions. [2021-05-02 12:11:20,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-05-02 12:11:20,628 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 1.0789473684210527) internal successors, (82), 40 states have internal predecessors, (82), 37 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 221 [2021-05-02 12:11:20,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:11:20,630 INFO L225 Difference]: With dead ends: 130 [2021-05-02 12:11:20,630 INFO L226 Difference]: Without dead ends: 125 [2021-05-02 12:11:20,631 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 231 SyntacticMatches, 61 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2612 ImplicationChecksByTransitivity, 10661.7ms TimeCoverageRelationStatistics Valid=614, Invalid=21142, Unknown=0, NotChecked=0, Total=21756 [2021-05-02 12:11:20,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-05-02 12:11:20,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 123. [2021-05-02 12:11:20,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 81 states have (on average 1.0123456790123457) internal successors, (82), 81 states have internal predecessors, (82), 39 states have call successors, (39), 4 states have call predecessors, (39), 2 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2021-05-02 12:11:20,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 158 transitions. [2021-05-02 12:11:20,646 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 158 transitions. Word has length 221 [2021-05-02 12:11:20,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:11:20,647 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 158 transitions. [2021-05-02 12:11:20,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 76 states, 76 states have (on average 1.0789473684210527) internal successors, (82), 40 states have internal predecessors, (82), 37 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2021-05-02 12:11:20,647 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 158 transitions. [2021-05-02 12:11:20,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-05-02 12:11:20,648 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:11:20,648 INFO L523 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:11:20,854 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-05-02 12:11:20,854 INFO L428 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:11:20,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:11:20,854 INFO L82 PathProgramCache]: Analyzing trace with hash -781315234, now seen corresponding path program 36 times [2021-05-02 12:11:20,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:11:20,855 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027881225] [2021-05-02 12:11:20,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:11:20,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:23,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:11:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:23,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:11:23,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:23,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:11:23,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:23,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:11:23,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:23,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:11:23,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:23,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:11:23,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:23,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:11:23,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:23,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:11:23,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:23,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:11:23,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:23,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:11:23,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:23,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:11:23,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:23,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:11:23,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:23,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:11:23,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:23,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:11:23,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:23,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:11:23,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:23,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:11:23,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:23,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:11:23,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:23,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:11:23,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:23,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:11:23,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:23,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:11:23,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:23,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:11:23,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:23,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:11:23,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:23,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:11:23,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:23,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:11:23,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:23,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 12:11:23,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:23,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 12:11:23,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:23,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 12:11:23,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:23,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 12:11:24,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:24,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 12:11:24,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:24,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 12:11:24,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:24,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 12:11:24,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:24,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 12:11:24,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:24,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 12:11:24,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:24,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 12:11:24,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:24,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 12:11:24,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:24,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 12:11:24,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:24,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-05-02 12:11:24,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:24,026 INFO L134 CoverageAnalysis]: Checked inductivity of 3816 backedges. 0 proven. 1926 refuted. 0 times theorem prover too weak. 1890 trivial. 0 not checked. [2021-05-02 12:11:24,027 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:11:24,027 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027881225] [2021-05-02 12:11:24,027 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027881225] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:11:24,027 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127813690] [2021-05-02 12:11:24,027 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 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 12:11:34,193 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2021-05-02 12:11:34,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:11:34,204 WARN L261 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 373 conjunts are in the unsatisfiable core [2021-05-02 12:11:34,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:11:34,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:34,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:34,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:34,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:34,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:34,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:34,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:34,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:34,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:34,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:34,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:34,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:34,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:34,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:34,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:34,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:34,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:34,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:34,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:34,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:34,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:34,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:34,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:35,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:35,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:35,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:35,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:35,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:35,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:35,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:35,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:35,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:35,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:35,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:35,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:35,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:35,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:35,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:35,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:35,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:35,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:35,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:35,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:35,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:35,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:35,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:35,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:35,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:35,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:35,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:35,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:35,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:35,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:36,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:36,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:36,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:36,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:36,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:36,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:36,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:36,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:36,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:36,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:36,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:36,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:36,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:36,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:36,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:36,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:36,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:36,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:36,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:36,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:36,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:36,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:36,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:36,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:36,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:36,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:36,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:36,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:36,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:36,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:36,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:37,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:37,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:37,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:37,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:37,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:37,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:37,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:37,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:37,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:37,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:37,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:37,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:37,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:37,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:37,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:37,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:37,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:37,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:37,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:37,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:37,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:38,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:38,020 INFO L134 CoverageAnalysis]: Checked inductivity of 3816 backedges. 0 proven. 1926 refuted. 0 times theorem prover too weak. 1890 trivial. 0 not checked. [2021-05-02 12:11:38,020 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127813690] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:11:38,020 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:11:38,020 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 76] total 78 [2021-05-02 12:11:38,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830870875] [2021-05-02 12:11:38,021 INFO L460 AbstractCegarLoop]: Interpolant automaton has 78 states [2021-05-02 12:11:38,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:11:38,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-05-02 12:11:38,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=5816, Unknown=0, NotChecked=0, Total=6006 [2021-05-02 12:11:38,022 INFO L87 Difference]: Start difference. First operand 123 states and 158 transitions. Second operand has 78 states, 78 states have (on average 1.0769230769230769) internal successors, (84), 41 states have internal predecessors, (84), 38 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2021-05-02 12:11:46,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:11:46,876 INFO L93 Difference]: Finished difference Result 133 states and 170 transitions. [2021-05-02 12:11:46,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-05-02 12:11:46,876 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 1.0769230769230769) internal successors, (84), 41 states have internal predecessors, (84), 38 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Word has length 227 [2021-05-02 12:11:46,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:11:46,877 INFO L225 Difference]: With dead ends: 133 [2021-05-02 12:11:46,877 INFO L226 Difference]: Without dead ends: 128 [2021-05-02 12:11:46,878 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 254 SyntacticMatches, 46 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2725 ImplicationChecksByTransitivity, 10815.1ms TimeCoverageRelationStatistics Valid=631, Invalid=22321, Unknown=0, NotChecked=0, Total=22952 [2021-05-02 12:11:46,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-05-02 12:11:46,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 126. [2021-05-02 12:11:46,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 83 states have (on average 1.0120481927710843) internal successors, (84), 83 states have internal predecessors, (84), 40 states have call successors, (40), 4 states have call predecessors, (40), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-05-02 12:11:46,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 162 transitions. [2021-05-02 12:11:46,893 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 162 transitions. Word has length 227 [2021-05-02 12:11:46,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:11:46,893 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 162 transitions. [2021-05-02 12:11:46,893 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 78 states, 78 states have (on average 1.0769230769230769) internal successors, (84), 41 states have internal predecessors, (84), 38 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2021-05-02 12:11:46,894 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 162 transitions. [2021-05-02 12:11:46,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-05-02 12:11:46,894 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:11:46,894 INFO L523 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:11:47,099 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-05-02 12:11:47,100 INFO L428 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:11:47,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:11:47,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1683788732, now seen corresponding path program 37 times [2021-05-02 12:11:47,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:11:47,100 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929645879] [2021-05-02 12:11:47,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:11:47,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:50,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:11:50,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:50,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:11:50,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:50,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:11:50,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:50,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:11:50,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:50,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:11:50,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:50,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:11:50,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:50,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:11:50,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:50,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:11:50,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:50,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:11:50,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:50,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:11:50,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:50,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:11:50,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:50,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:11:50,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:50,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:11:50,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:50,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:11:50,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:50,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:11:50,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:50,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:11:50,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:50,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:11:50,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:50,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:11:50,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:50,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:11:50,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:50,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:11:50,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:50,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:11:50,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:50,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:11:50,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:50,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:11:50,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:50,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:11:50,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:50,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 12:11:50,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:50,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 12:11:50,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:50,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 12:11:50,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:50,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 12:11:50,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:50,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 12:11:50,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:50,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 12:11:50,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:50,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 12:11:50,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:50,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 12:11:50,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:50,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 12:11:50,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:50,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 12:11:50,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:50,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 12:11:50,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:50,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 12:11:50,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:50,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-05-02 12:11:50,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:50,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 12:11:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:50,396 INFO L134 CoverageAnalysis]: Checked inductivity of 4033 backedges. 0 proven. 2035 refuted. 0 times theorem prover too weak. 1998 trivial. 0 not checked. [2021-05-02 12:11:50,396 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:11:50,396 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929645879] [2021-05-02 12:11:50,396 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929645879] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:11:50,396 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30412999] [2021-05-02 12:11:50,396 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 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 12:11:50,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:50,490 WARN L261 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 373 conjunts are in the unsatisfiable core [2021-05-02 12:11:50,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:11:50,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:50,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:50,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:50,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:50,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:50,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:50,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:50,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:50,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:50,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:50,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:50,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:50,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:50,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:51,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:51,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:51,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:51,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:51,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:51,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:51,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:51,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:51,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:51,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:51,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:51,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:51,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:51,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:51,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:51,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:51,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:51,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:51,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:51,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:51,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:51,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:51,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:51,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:51,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:51,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:51,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:51,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:51,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:51,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:52,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:52,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:52,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:52,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:52,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:52,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:52,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:52,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:52,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:52,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:52,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:52,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:52,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:52,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:52,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:52,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:52,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:52,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:52,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:52,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:52,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:52,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:52,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:52,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:52,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:52,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:52,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:52,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:52,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:52,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:52,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:52,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:52,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:53,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:53,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:53,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:53,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:53,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:53,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:53,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:53,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:53,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:53,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:53,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:53,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:53,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:53,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:53,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:53,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:53,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:53,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:53,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:53,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:53,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:53,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:53,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:53,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:53,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:53,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:53,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:53,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:53,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:53,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:54,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:54,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:54,107 INFO L134 CoverageAnalysis]: Checked inductivity of 4033 backedges. 0 proven. 2035 refuted. 0 times theorem prover too weak. 1998 trivial. 0 not checked. [2021-05-02 12:11:54,108 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30412999] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:11:54,108 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:11:54,108 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 78] total 80 [2021-05-02 12:11:54,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571839226] [2021-05-02 12:11:54,108 INFO L460 AbstractCegarLoop]: Interpolant automaton has 80 states [2021-05-02 12:11:54,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:11:54,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-05-02 12:11:54,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=6125, Unknown=0, NotChecked=0, Total=6320 [2021-05-02 12:11:54,109 INFO L87 Difference]: Start difference. First operand 126 states and 162 transitions. Second operand has 80 states, 80 states have (on average 1.075) internal successors, (86), 42 states have internal predecessors, (86), 39 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-05-02 12:12:03,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:12:03,488 INFO L93 Difference]: Finished difference Result 136 states and 174 transitions. [2021-05-02 12:12:03,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-05-02 12:12:03,489 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 1.075) internal successors, (86), 42 states have internal predecessors, (86), 39 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 233 [2021-05-02 12:12:03,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:12:03,490 INFO L225 Difference]: With dead ends: 136 [2021-05-02 12:12:03,490 INFO L226 Difference]: Without dead ends: 131 [2021-05-02 12:12:03,491 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 271 SyntacticMatches, 37 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2854 ImplicationChecksByTransitivity, 10975.8ms TimeCoverageRelationStatistics Valid=648, Invalid=23532, Unknown=0, NotChecked=0, Total=24180 [2021-05-02 12:12:03,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-05-02 12:12:03,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 129. [2021-05-02 12:12:03,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 85 states have (on average 1.011764705882353) internal successors, (86), 85 states have internal predecessors, (86), 41 states have call successors, (41), 4 states have call predecessors, (41), 2 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-05-02 12:12:03,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 166 transitions. [2021-05-02 12:12:03,507 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 166 transitions. Word has length 233 [2021-05-02 12:12:03,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:12:03,507 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 166 transitions. [2021-05-02 12:12:03,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 80 states, 80 states have (on average 1.075) internal successors, (86), 42 states have internal predecessors, (86), 39 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-05-02 12:12:03,507 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 166 transitions. [2021-05-02 12:12:03,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-05-02 12:12:03,508 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:12:03,508 INFO L523 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:12:03,710 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-05-02 12:12:03,710 INFO L428 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:12:03,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:12:03,710 INFO L82 PathProgramCache]: Analyzing trace with hash 385144218, now seen corresponding path program 38 times [2021-05-02 12:12:03,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:12:03,710 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069274354] [2021-05-02 12:12:03,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:12:03,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:07,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:12:07,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:07,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:12:07,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:07,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:12:07,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:07,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:12:07,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:07,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:12:07,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:07,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:12:07,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:07,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:12:07,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:07,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:12:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:07,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:12:07,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:07,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:12:07,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:07,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:12:07,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:07,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:12:07,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:07,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:12:07,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:07,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:12:07,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:07,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:12:07,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:07,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:12:07,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:07,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:12:07,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:07,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:12:07,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:07,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:12:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:07,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:12:07,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:07,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:12:07,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:07,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:12:07,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:07,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:12:07,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:07,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:12:07,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:07,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 12:12:07,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:07,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 12:12:07,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:07,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 12:12:07,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:07,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 12:12:07,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:07,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 12:12:07,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:07,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 12:12:07,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:07,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 12:12:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:07,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 12:12:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:07,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 12:12:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:07,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 12:12:07,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:07,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 12:12:07,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:07,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 12:12:07,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:07,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-05-02 12:12:07,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:07,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 12:12:07,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:07,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-05-02 12:12:07,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:07,293 INFO L134 CoverageAnalysis]: Checked inductivity of 4256 backedges. 0 proven. 2147 refuted. 0 times theorem prover too weak. 2109 trivial. 0 not checked. [2021-05-02 12:12:07,293 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:12:07,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069274354] [2021-05-02 12:12:07,293 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069274354] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:12:07,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683384317] [2021-05-02 12:12:07,294 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 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 12:12:07,388 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:12:07,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:12:07,393 WARN L261 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 383 conjunts are in the unsatisfiable core [2021-05-02 12:12:07,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:12:07,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:07,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:07,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:07,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:07,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:07,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:07,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:07,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:07,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:07,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:07,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:07,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:07,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:07,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:08,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:08,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:08,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:08,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:08,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:08,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:08,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:08,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:08,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:08,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:08,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:08,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:08,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:08,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:08,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:08,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:08,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:08,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:08,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:08,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:08,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:08,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:08,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:08,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:08,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:08,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:08,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:08,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:08,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:08,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:09,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:09,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:09,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:09,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:09,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:09,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:09,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:09,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:09,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:09,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:09,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:09,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:09,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:09,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:09,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:09,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:09,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:09,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:09,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:09,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:09,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:09,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:09,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:09,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:09,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:09,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:09,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:09,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:09,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:09,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:10,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:10,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:10,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:10,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:10,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:10,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:10,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:10,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:10,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:10,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:10,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:10,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:10,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:10,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:10,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:10,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:10,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:10,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:10,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:10,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:10,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:10,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:10,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:10,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:10,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:10,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:10,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:10,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:10,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:10,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:11,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:11,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:11,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:11,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:11,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:11,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:11,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:11,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:11,349 INFO L134 CoverageAnalysis]: Checked inductivity of 4256 backedges. 0 proven. 2147 refuted. 0 times theorem prover too weak. 2109 trivial. 0 not checked. [2021-05-02 12:12:11,349 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683384317] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:12:11,349 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:12:11,349 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 80] total 82 [2021-05-02 12:12:11,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821337312] [2021-05-02 12:12:11,350 INFO L460 AbstractCegarLoop]: Interpolant automaton has 82 states [2021-05-02 12:12:11,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:12:11,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-05-02 12:12:11,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=6442, Unknown=0, NotChecked=0, Total=6642 [2021-05-02 12:12:11,350 INFO L87 Difference]: Start difference. First operand 129 states and 166 transitions. Second operand has 82 states, 82 states have (on average 1.0731707317073171) internal successors, (88), 43 states have internal predecessors, (88), 40 states have call successors, (42), 3 states have call predecessors, (42), 2 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-05-02 12:12:21,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:12:21,641 INFO L93 Difference]: Finished difference Result 139 states and 178 transitions. [2021-05-02 12:12:21,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-05-02 12:12:21,642 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 1.0731707317073171) internal successors, (88), 43 states have internal predecessors, (88), 40 states have call successors, (42), 3 states have call predecessors, (42), 2 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Word has length 239 [2021-05-02 12:12:21,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:12:21,643 INFO L225 Difference]: With dead ends: 139 [2021-05-02 12:12:21,643 INFO L226 Difference]: Without dead ends: 134 [2021-05-02 12:12:21,644 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 278 SyntacticMatches, 38 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3007 ImplicationChecksByTransitivity, 11851.5ms TimeCoverageRelationStatistics Valid=665, Invalid=24775, Unknown=0, NotChecked=0, Total=25440 [2021-05-02 12:12:21,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-05-02 12:12:21,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 132. [2021-05-02 12:12:21,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 87 states have (on average 1.0114942528735633) internal successors, (88), 87 states have internal predecessors, (88), 42 states have call successors, (42), 4 states have call predecessors, (42), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-05-02 12:12:21,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 170 transitions. [2021-05-02 12:12:21,660 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 170 transitions. Word has length 239 [2021-05-02 12:12:21,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:12:21,660 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 170 transitions. [2021-05-02 12:12:21,660 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 82 states, 82 states have (on average 1.0731707317073171) internal successors, (88), 43 states have internal predecessors, (88), 40 states have call successors, (42), 3 states have call predecessors, (42), 2 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-05-02 12:12:21,661 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 170 transitions. [2021-05-02 12:12:21,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-05-02 12:12:21,661 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:12:21,661 INFO L523 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:12:21,877 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-05-02 12:12:21,877 INFO L428 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:12:21,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:12:21,878 INFO L82 PathProgramCache]: Analyzing trace with hash -868239112, now seen corresponding path program 39 times [2021-05-02 12:12:21,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:12:21,878 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857899475] [2021-05-02 12:12:21,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:12:21,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:25,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:12:25,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:25,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:12:25,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:25,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:12:25,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:25,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:12:25,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:25,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:12:25,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:25,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:12:25,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:25,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:12:25,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:25,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:12:25,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:25,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:12:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:25,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:12:25,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:25,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:12:25,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:25,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:12:25,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:25,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:12:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:25,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:12:25,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:25,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:12:25,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:25,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:12:25,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:25,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:12:25,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:25,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:12:25,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:25,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:12:25,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:25,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:12:25,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:25,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:12:25,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:25,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:12:25,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:25,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:12:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:25,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:12:25,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:25,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 12:12:25,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:25,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 12:12:25,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:25,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 12:12:25,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:25,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 12:12:25,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:25,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 12:12:25,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:25,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 12:12:25,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:25,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 12:12:25,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:25,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 12:12:25,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:25,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 12:12:25,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:25,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 12:12:25,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:25,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 12:12:25,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:25,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 12:12:25,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:25,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-05-02 12:12:25,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:25,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 12:12:25,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:25,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-05-02 12:12:25,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:25,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-05-02 12:12:25,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:25,921 INFO L134 CoverageAnalysis]: Checked inductivity of 4485 backedges. 0 proven. 2262 refuted. 0 times theorem prover too weak. 2223 trivial. 0 not checked. [2021-05-02 12:12:25,921 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:12:25,921 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857899475] [2021-05-02 12:12:25,921 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857899475] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:12:25,922 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556324845] [2021-05-02 12:12:25,922 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 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 12:12:35,597 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2021-05-02 12:12:35,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:12:35,607 WARN L261 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 405 conjunts are in the unsatisfiable core [2021-05-02 12:12:35,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:12:35,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:35,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:35,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:35,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:35,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:35,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:35,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:35,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:36,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:36,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:36,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:36,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:36,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:36,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:36,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:36,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:36,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:36,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:36,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:36,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:36,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:36,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:36,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:36,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:36,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:36,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:36,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:36,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:36,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:36,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:36,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:36,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:36,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:36,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:36,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:37,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:37,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:37,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:37,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:37,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:37,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:37,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:37,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:37,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:37,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:37,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:37,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:37,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:37,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:37,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:37,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:37,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:37,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:37,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:37,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:37,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:37,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:37,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:37,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:37,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:37,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:37,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:37,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:38,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:38,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:38,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:38,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:38,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:38,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:38,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:38,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:38,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:38,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:38,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:38,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:38,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:38,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:38,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:38,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:38,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:38,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:38,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:38,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:38,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:38,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:38,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:39,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:39,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:39,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:39,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:39,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:39,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:39,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:39,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:39,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:39,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:39,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:39,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:39,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:39,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:39,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:40,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:40,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:40,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:40,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:40,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:40,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:40,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:40,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:40,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:40,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:40,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:40,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:40,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:40,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:40,907 INFO L134 CoverageAnalysis]: Checked inductivity of 4485 backedges. 0 proven. 2262 refuted. 0 times theorem prover too weak. 2223 trivial. 0 not checked. [2021-05-02 12:12:40,907 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556324845] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:12:40,907 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:12:40,907 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 82] total 84 [2021-05-02 12:12:40,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671341194] [2021-05-02 12:12:40,908 INFO L460 AbstractCegarLoop]: Interpolant automaton has 84 states [2021-05-02 12:12:40,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:12:40,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-05-02 12:12:40,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=6767, Unknown=0, NotChecked=0, Total=6972 [2021-05-02 12:12:40,908 INFO L87 Difference]: Start difference. First operand 132 states and 170 transitions. Second operand has 84 states, 84 states have (on average 1.0714285714285714) internal successors, (90), 44 states have internal predecessors, (90), 41 states have call successors, (43), 3 states have call predecessors, (43), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-05-02 12:12:52,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:12:52,135 INFO L93 Difference]: Finished difference Result 142 states and 182 transitions. [2021-05-02 12:12:52,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-05-02 12:12:52,136 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 1.0714285714285714) internal successors, (90), 44 states have internal predecessors, (90), 41 states have call successors, (43), 3 states have call predecessors, (43), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 245 [2021-05-02 12:12:52,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:12:52,137 INFO L225 Difference]: With dead ends: 142 [2021-05-02 12:12:52,137 INFO L226 Difference]: Without dead ends: 137 [2021-05-02 12:12:52,138 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 273 SyntacticMatches, 51 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3188 ImplicationChecksByTransitivity, 14101.1ms TimeCoverageRelationStatistics Valid=682, Invalid=26050, Unknown=0, NotChecked=0, Total=26732 [2021-05-02 12:12:52,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-05-02 12:12:52,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 135. [2021-05-02 12:12:52,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 89 states have (on average 1.0112359550561798) internal successors, (90), 89 states have internal predecessors, (90), 43 states have call successors, (43), 4 states have call predecessors, (43), 2 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-05-02 12:12:52,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 174 transitions. [2021-05-02 12:12:52,155 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 174 transitions. Word has length 245 [2021-05-02 12:12:52,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:12:52,155 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 174 transitions. [2021-05-02 12:12:52,155 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 84 states, 84 states have (on average 1.0714285714285714) internal successors, (90), 44 states have internal predecessors, (90), 41 states have call successors, (43), 3 states have call predecessors, (43), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-05-02 12:12:52,155 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 174 transitions. [2021-05-02 12:12:52,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-05-02 12:12:52,156 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:12:52,156 INFO L523 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:12:52,360 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:12:52,361 INFO L428 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:12:52,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:12:52,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1964907990, now seen corresponding path program 40 times [2021-05-02 12:12:52,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:12:52,361 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035736238] [2021-05-02 12:12:52,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:12:52,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:56,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:12:56,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:56,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:12:56,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:56,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:12:56,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:56,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:12:56,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:56,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:12:56,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:56,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:12:56,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:56,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:12:56,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:56,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:12:56,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:56,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:12:56,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:56,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:12:56,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:56,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:12:56,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:56,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:12:56,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:56,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:12:56,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:56,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:12:56,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:56,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:12:56,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:56,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:12:56,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:56,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:12:56,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:56,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:12:56,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:56,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:12:56,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:56,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:12:56,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:56,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:12:56,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:56,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:12:56,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:56,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:12:56,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:56,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:12:56,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:56,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 12:12:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:56,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 12:12:56,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:56,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 12:12:56,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:56,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 12:12:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:56,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 12:12:56,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:56,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 12:12:56,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:56,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 12:12:56,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:56,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 12:12:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:56,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 12:12:56,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:56,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 12:12:56,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:56,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 12:12:56,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:56,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 12:12:56,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:56,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-05-02 12:12:56,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:56,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 12:12:56,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:56,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-05-02 12:12:56,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:56,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-05-02 12:12:56,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:56,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-05-02 12:12:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:12:56,796 INFO L134 CoverageAnalysis]: Checked inductivity of 4720 backedges. 0 proven. 2380 refuted. 0 times theorem prover too weak. 2340 trivial. 0 not checked. [2021-05-02 12:12:56,796 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:12:56,796 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035736238] [2021-05-02 12:12:56,796 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035736238] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:12:56,796 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511785258] [2021-05-02 12:12:56,796 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 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 12:12:56,883 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:12:56,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:12:56,888 WARN L261 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 403 conjunts are in the unsatisfiable core [2021-05-02 12:12:56,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:12:57,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:57,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:57,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:57,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:57,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:57,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:57,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:57,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:57,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:57,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:57,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:57,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:57,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:57,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:57,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:57,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:57,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:57,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:57,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:57,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:57,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:57,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:57,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:58,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:58,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:58,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:58,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:58,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:58,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:58,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:58,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:58,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:58,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:58,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:58,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:58,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:58,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:58,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:58,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:58,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:58,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:58,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:58,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:58,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:58,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:58,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:58,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:58,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:58,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:58,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:59,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:59,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:59,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:59,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:59,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:59,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:59,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:59,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:59,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:59,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:59,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:59,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:59,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:59,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:59,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:59,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:59,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:59,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:59,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:59,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:59,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:59,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:59,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:59,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:59,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:59,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:12:59,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:00,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:00,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:00,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:00,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:00,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:00,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:00,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:00,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:00,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:00,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:00,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:00,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:00,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:00,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:00,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:00,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:00,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:00,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:00,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:00,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:00,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:00,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:00,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:00,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:01,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:01,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:01,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:01,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:01,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:01,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:01,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:01,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:01,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:01,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:01,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:01,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:01,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:01,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:01,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:01,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:01,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:01,723 INFO L134 CoverageAnalysis]: Checked inductivity of 4720 backedges. 0 proven. 2380 refuted. 0 times theorem prover too weak. 2340 trivial. 0 not checked. [2021-05-02 12:13:01,723 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511785258] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:13:01,723 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:13:01,723 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 84] total 86 [2021-05-02 12:13:01,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164425036] [2021-05-02 12:13:01,724 INFO L460 AbstractCegarLoop]: Interpolant automaton has 86 states [2021-05-02 12:13:01,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:13:01,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2021-05-02 12:13:01,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=7100, Unknown=0, NotChecked=0, Total=7310 [2021-05-02 12:13:01,724 INFO L87 Difference]: Start difference. First operand 135 states and 174 transitions. Second operand has 86 states, 86 states have (on average 1.069767441860465) internal successors, (92), 45 states have internal predecessors, (92), 42 states have call successors, (44), 3 states have call predecessors, (44), 2 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-05-02 12:13:14,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:13:14,314 INFO L93 Difference]: Finished difference Result 145 states and 186 transitions. [2021-05-02 12:13:14,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-05-02 12:13:14,315 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 1.069767441860465) internal successors, (92), 45 states have internal predecessors, (92), 42 states have call successors, (44), 3 states have call predecessors, (44), 2 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Word has length 251 [2021-05-02 12:13:14,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:13:14,316 INFO L225 Difference]: With dead ends: 145 [2021-05-02 12:13:14,316 INFO L226 Difference]: Without dead ends: 140 [2021-05-02 12:13:14,317 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 292 SyntacticMatches, 40 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3325 ImplicationChecksByTransitivity, 14533.9ms TimeCoverageRelationStatistics Valid=699, Invalid=27357, Unknown=0, NotChecked=0, Total=28056 [2021-05-02 12:13:14,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-05-02 12:13:14,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 138. [2021-05-02 12:13:14,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 91 states have (on average 1.010989010989011) internal successors, (92), 91 states have internal predecessors, (92), 44 states have call successors, (44), 4 states have call predecessors, (44), 2 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2021-05-02 12:13:14,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 178 transitions. [2021-05-02 12:13:14,335 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 178 transitions. Word has length 251 [2021-05-02 12:13:14,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:13:14,335 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 178 transitions. [2021-05-02 12:13:14,335 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 86 states, 86 states have (on average 1.069767441860465) internal successors, (92), 45 states have internal predecessors, (92), 42 states have call successors, (44), 3 states have call predecessors, (44), 2 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-05-02 12:13:14,335 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 178 transitions. [2021-05-02 12:13:14,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-05-02 12:13:14,336 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:13:14,336 INFO L523 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:13:14,554 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:13:14,554 INFO L428 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:13:14,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:13:14,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1313399860, now seen corresponding path program 41 times [2021-05-02 12:13:14,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:13:14,554 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794320604] [2021-05-02 12:13:14,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:13:14,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:19,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:13:19,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:19,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:13:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:19,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:13:19,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:19,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:13:19,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:19,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:13:19,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:19,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:13:19,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:19,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:13:19,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:19,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:13:19,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:19,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:13:19,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:19,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:13:19,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:19,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:13:19,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:19,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:13:19,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:19,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:13:19,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:19,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:13:19,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:19,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:13:19,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:19,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:13:19,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:19,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:13:19,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:19,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:13:19,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:19,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:13:19,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:19,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:13:19,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:19,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:13:19,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:19,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:13:19,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:19,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:13:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:19,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:13:19,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:19,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 12:13:19,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:19,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 12:13:19,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:19,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 12:13:19,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:19,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 12:13:19,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:19,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 12:13:19,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:19,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 12:13:19,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:19,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 12:13:19,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:19,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 12:13:19,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:19,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 12:13:19,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:19,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 12:13:19,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:19,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 12:13:19,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:19,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 12:13:19,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:19,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-05-02 12:13:19,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:19,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 12:13:19,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:19,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-05-02 12:13:19,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:19,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-05-02 12:13:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:19,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-05-02 12:13:19,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:19,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 12:13:19,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:19,316 INFO L134 CoverageAnalysis]: Checked inductivity of 4961 backedges. 0 proven. 2501 refuted. 0 times theorem prover too weak. 2460 trivial. 0 not checked. [2021-05-02 12:13:19,316 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:13:19,316 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794320604] [2021-05-02 12:13:19,317 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794320604] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:13:19,317 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342768314] [2021-05-02 12:13:19,317 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 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 12:14:53,392 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2021-05-02 12:14:53,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:14:53,428 WARN L261 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 443 conjunts are in the unsatisfiable core [2021-05-02 12:14:53,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:14:53,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:53,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:53,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:53,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:53,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:53,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:53,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:53,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:53,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:53,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:53,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:54,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:54,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:54,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:54,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:54,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:54,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:54,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:54,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:54,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:54,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:54,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:54,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:54,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:54,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:54,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:54,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:54,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:54,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:55,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:55,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:55,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:55,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:55,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:55,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:55,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:55,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:55,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:55,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:55,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:55,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:55,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:55,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:55,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:55,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:55,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:55,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:56,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:56,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:56,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:56,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:56,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:56,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:56,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:56,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:56,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:56,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:56,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:56,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:56,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:56,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:56,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:57,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:57,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:57,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:57,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:57,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:57,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:57,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:57,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:57,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:57,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:57,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:57,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:57,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:57,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:57,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:58,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:58,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:58,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:58,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:58,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:58,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:58,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:58,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:58,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:58,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:58,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:58,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:58,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:58,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:58,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:58,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:58,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:58,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:58,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:59,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:59,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:59,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:59,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:59,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:59,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:59,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:59,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:59,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:59,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:59,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:59,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:59,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:59,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:59,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:59,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:59,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:00,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:00,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:00,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:00,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:00,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:00,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:00,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:00,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:00,442 INFO L134 CoverageAnalysis]: Checked inductivity of 4961 backedges. 0 proven. 2501 refuted. 0 times theorem prover too weak. 2460 trivial. 0 not checked. [2021-05-02 12:15:00,442 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342768314] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:15:00,442 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:15:00,442 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 86] total 88 [2021-05-02 12:15:00,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056891058] [2021-05-02 12:15:00,443 INFO L460 AbstractCegarLoop]: Interpolant automaton has 88 states [2021-05-02 12:15:00,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:15:00,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-05-02 12:15:00,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=7441, Unknown=0, NotChecked=0, Total=7656 [2021-05-02 12:15:00,443 INFO L87 Difference]: Start difference. First operand 138 states and 178 transitions. Second operand has 88 states, 88 states have (on average 1.0681818181818181) internal successors, (94), 46 states have internal predecessors, (94), 43 states have call successors, (45), 3 states have call predecessors, (45), 2 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2021-05-02 12:15:16,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:15:16,565 INFO L93 Difference]: Finished difference Result 148 states and 190 transitions. [2021-05-02 12:15:16,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-05-02 12:15:16,566 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 1.0681818181818181) internal successors, (94), 46 states have internal predecessors, (94), 43 states have call successors, (45), 3 states have call predecessors, (45), 2 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 257 [2021-05-02 12:15:16,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:15:16,567 INFO L225 Difference]: With dead ends: 148 [2021-05-02 12:15:16,567 INFO L226 Difference]: Without dead ends: 143 [2021-05-02 12:15:16,568 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 269 SyntacticMatches, 71 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3550 ImplicationChecksByTransitivity, 18551.4ms TimeCoverageRelationStatistics Valid=716, Invalid=28696, Unknown=0, NotChecked=0, Total=29412 [2021-05-02 12:15:16,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-05-02 12:15:16,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 141. [2021-05-02 12:15:16,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 93 states have (on average 1.010752688172043) internal successors, (94), 93 states have internal predecessors, (94), 45 states have call successors, (45), 4 states have call predecessors, (45), 2 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2021-05-02 12:15:16,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 182 transitions. [2021-05-02 12:15:16,586 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 182 transitions. Word has length 257 [2021-05-02 12:15:16,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:15:16,587 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 182 transitions. [2021-05-02 12:15:16,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 88 states, 88 states have (on average 1.0681818181818181) internal successors, (94), 46 states have internal predecessors, (94), 43 states have call successors, (45), 3 states have call predecessors, (45), 2 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2021-05-02 12:15:16,587 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 182 transitions. [2021-05-02 12:15:16,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2021-05-02 12:15:16,588 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:15:16,588 INFO L523 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:15:16,788 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-05-02 12:15:16,789 INFO L428 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:15:16,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:15:16,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1638863854, now seen corresponding path program 42 times [2021-05-02 12:15:16,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:15:16,790 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955225028] [2021-05-02 12:15:16,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:15:16,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:22,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:15:22,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:22,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:15:22,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:22,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:15:22,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:22,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:15:22,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:22,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:15:22,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:22,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:15:22,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:22,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:15:22,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:22,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:15:22,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:22,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:15:22,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:22,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:15:22,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:22,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:15:22,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:22,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:15:22,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:22,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:15:22,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:22,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:15:22,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:22,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:15:22,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:22,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:15:22,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:22,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:15:22,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:22,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:15:22,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:22,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:15:22,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:22,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:15:22,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:22,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:15:22,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:22,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:15:22,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:22,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:15:22,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:22,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:15:22,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:22,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 12:15:22,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:22,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 12:15:22,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:22,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 12:15:22,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:22,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 12:15:22,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:22,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 12:15:22,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:22,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 12:15:22,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:22,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 12:15:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:22,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 12:15:22,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:22,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 12:15:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:22,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 12:15:22,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:22,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 12:15:22,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:22,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 12:15:22,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:22,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-05-02 12:15:22,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:22,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 12:15:22,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:22,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-05-02 12:15:22,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:22,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-05-02 12:15:22,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:22,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-05-02 12:15:22,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:22,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 12:15:22,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:22,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-05-02 12:15:22,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:22,751 INFO L134 CoverageAnalysis]: Checked inductivity of 5208 backedges. 0 proven. 2625 refuted. 0 times theorem prover too weak. 2583 trivial. 0 not checked. [2021-05-02 12:15:22,751 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:15:22,751 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955225028] [2021-05-02 12:15:22,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955225028] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:15:22,751 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691758882] [2021-05-02 12:15:22,751 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 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 12:15:46,263 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2021-05-02 12:15:46,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:15:46,278 WARN L261 TraceCheckSpWp]: Trace formula consists of 673 conjuncts, 429 conjunts are in the unsatisfiable core [2021-05-02 12:15:46,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:15:46,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:46,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:46,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:46,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:46,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:46,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:46,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:46,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:46,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:46,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:46,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:47,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:47,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:47,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:47,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:47,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:47,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:47,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:47,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:47,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:47,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:47,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:47,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:47,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:47,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:47,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:47,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:47,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:47,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:48,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:48,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:48,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:48,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:48,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:48,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:48,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:48,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:48,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:48,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:48,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:48,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:48,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:48,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:48,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:48,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:48,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:48,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:49,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:49,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:49,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:49,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:49,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:49,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:49,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:49,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:49,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:49,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:49,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:49,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:49,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:49,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:49,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:49,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:49,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:49,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:50,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:50,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:50,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:50,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:50,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:50,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:50,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:50,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:50,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:50,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:50,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:50,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:50,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:50,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:50,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:50,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:50,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:50,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:51,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:51,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:51,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:51,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:51,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:51,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:51,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:51,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:51,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:51,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:51,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:51,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:51,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:51,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:51,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:52,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:52,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:52,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:52,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:52,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:52,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:52,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:52,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:52,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:52,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:52,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:52,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:52,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:52,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:52,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:52,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:52,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:52,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:53,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:53,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:53,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:53,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:53,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:53,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:53,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:53,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:53,526 INFO L134 CoverageAnalysis]: Checked inductivity of 5208 backedges. 0 proven. 2625 refuted. 0 times theorem prover too weak. 2583 trivial. 0 not checked. [2021-05-02 12:15:53,526 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691758882] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:15:53,526 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:15:53,526 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 88] total 90 [2021-05-02 12:15:53,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458607237] [2021-05-02 12:15:53,526 INFO L460 AbstractCegarLoop]: Interpolant automaton has 90 states [2021-05-02 12:15:53,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:15:53,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2021-05-02 12:15:53,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=7790, Unknown=0, NotChecked=0, Total=8010 [2021-05-02 12:15:53,527 INFO L87 Difference]: Start difference. First operand 141 states and 182 transitions. Second operand has 90 states, 90 states have (on average 1.0666666666666667) internal successors, (96), 47 states have internal predecessors, (96), 44 states have call successors, (46), 3 states have call predecessors, (46), 2 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2021-05-02 12:16:10,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:16:10,499 INFO L93 Difference]: Finished difference Result 151 states and 194 transitions. [2021-05-02 12:16:10,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-05-02 12:16:10,501 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 1.0666666666666667) internal successors, (96), 47 states have internal predecessors, (96), 44 states have call successors, (46), 3 states have call predecessors, (46), 2 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Word has length 263 [2021-05-02 12:16:10,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:16:10,502 INFO L225 Difference]: With dead ends: 151 [2021-05-02 12:16:10,502 INFO L226 Difference]: Without dead ends: 146 [2021-05-02 12:16:10,503 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 300 SyntacticMatches, 48 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3671 ImplicationChecksByTransitivity, 19895.7ms TimeCoverageRelationStatistics Valid=733, Invalid=30067, Unknown=0, NotChecked=0, Total=30800 [2021-05-02 12:16:10,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-05-02 12:16:10,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 144. [2021-05-02 12:16:10,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 95 states have (on average 1.0105263157894737) internal successors, (96), 95 states have internal predecessors, (96), 46 states have call successors, (46), 4 states have call predecessors, (46), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2021-05-02 12:16:10,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 186 transitions. [2021-05-02 12:16:10,522 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 186 transitions. Word has length 263 [2021-05-02 12:16:10,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:16:10,522 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 186 transitions. [2021-05-02 12:16:10,522 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 90 states, 90 states have (on average 1.0666666666666667) internal successors, (96), 47 states have internal predecessors, (96), 44 states have call successors, (46), 3 states have call predecessors, (46), 2 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2021-05-02 12:16:10,522 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 186 transitions. [2021-05-02 12:16:10,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-05-02 12:16:10,523 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:16:10,523 INFO L523 BasicCegarLoop]: trace histogram [43, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:16:10,731 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:16:10,731 INFO L428 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:16:10,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:16:10,732 INFO L82 PathProgramCache]: Analyzing trace with hash -207678096, now seen corresponding path program 43 times [2021-05-02 12:16:10,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:16:10,732 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815650618] [2021-05-02 12:16:10,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:16:10,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:16,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:16:16,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:16,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:16:16,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:17,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:16:17,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:17,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:16:17,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:17,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:16:17,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:17,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:16:17,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:17,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:16:17,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:17,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:16:17,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:17,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:16:17,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:17,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:16:17,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:17,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:16:17,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:17,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:16:17,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:17,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:16:17,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:17,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:16:17,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:17,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:16:17,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:17,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:16:17,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:17,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:16:17,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:17,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:16:17,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:17,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:16:17,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:17,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:16:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:17,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:16:17,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:17,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:16:17,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:17,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:16:17,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:17,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:16:17,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:17,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 12:16:17,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:17,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 12:16:17,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:17,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 12:16:17,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:17,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 12:16:17,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:17,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 12:16:17,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:17,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 12:16:17,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:17,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 12:16:17,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:17,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 12:16:17,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:17,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 12:16:17,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:17,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 12:16:17,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:17,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 12:16:17,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:17,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 12:16:17,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:17,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-05-02 12:16:17,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:17,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 12:16:17,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:17,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-05-02 12:16:17,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:17,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-05-02 12:16:17,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:17,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-05-02 12:16:17,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:17,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 12:16:17,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:17,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-05-02 12:16:17,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:17,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-05-02 12:16:17,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:17,179 INFO L134 CoverageAnalysis]: Checked inductivity of 5461 backedges. 0 proven. 2752 refuted. 0 times theorem prover too weak. 2709 trivial. 0 not checked. [2021-05-02 12:16:17,180 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:16:17,180 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815650618] [2021-05-02 12:16:17,180 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815650618] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:16:17,180 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461411267] [2021-05-02 12:16:17,180 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 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 12:16:17,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:17,282 WARN L261 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 433 conjunts are in the unsatisfiable core [2021-05-02 12:16:17,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:16:17,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:17,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:17,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:17,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:17,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:17,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:17,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:17,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:18,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:18,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:18,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:18,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:18,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:18,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:18,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:18,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:18,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:18,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:18,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:18,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:18,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:18,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:18,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:18,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:18,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:18,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:19,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:19,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:19,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:19,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:19,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:19,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:19,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:19,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:19,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:19,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:19,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:19,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:19,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:19,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:19,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:19,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:19,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:19,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:20,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:20,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:20,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:20,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:20,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:20,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:20,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:20,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:20,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:20,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:20,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:20,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:20,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:20,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:20,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:20,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:20,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:20,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:21,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:21,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:21,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:21,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:21,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:21,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:21,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:21,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:21,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:21,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:21,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:21,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:21,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:21,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:21,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:21,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:21,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:21,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:22,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:22,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:22,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:22,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:22,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:22,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:22,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:22,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:22,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:22,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:22,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:22,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:22,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:22,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:22,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:23,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:23,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:23,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:23,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:23,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:23,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:23,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:23,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:23,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:23,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:23,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:23,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:23,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:23,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:23,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:23,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:23,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:23,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:24,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:24,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:24,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:24,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:24,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:24,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:24,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:24,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:24,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:24,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:24,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:24,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:24,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:24,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:24,924 INFO L134 CoverageAnalysis]: Checked inductivity of 5461 backedges. 0 proven. 2752 refuted. 0 times theorem prover too weak. 2709 trivial. 0 not checked. [2021-05-02 12:16:24,924 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461411267] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:16:24,924 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:16:24,924 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 90] total 92 [2021-05-02 12:16:24,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984972760] [2021-05-02 12:16:24,925 INFO L460 AbstractCegarLoop]: Interpolant automaton has 92 states [2021-05-02 12:16:24,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:16:24,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-05-02 12:16:24,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=8147, Unknown=0, NotChecked=0, Total=8372 [2021-05-02 12:16:24,926 INFO L87 Difference]: Start difference. First operand 144 states and 186 transitions. Second operand has 92 states, 92 states have (on average 1.065217391304348) internal successors, (98), 48 states have internal predecessors, (98), 45 states have call successors, (47), 3 states have call predecessors, (47), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2021-05-02 12:16:43,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:16:43,487 INFO L93 Difference]: Finished difference Result 154 states and 198 transitions. [2021-05-02 12:16:43,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-05-02 12:16:43,489 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 1.065217391304348) internal successors, (98), 48 states have internal predecessors, (98), 45 states have call successors, (47), 3 states have call predecessors, (47), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Word has length 269 [2021-05-02 12:16:43,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:16:43,490 INFO L225 Difference]: With dead ends: 154 [2021-05-02 12:16:43,490 INFO L226 Difference]: Without dead ends: 149 [2021-05-02 12:16:43,491 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 313 SyntacticMatches, 43 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3832 ImplicationChecksByTransitivity, 21445.9ms TimeCoverageRelationStatistics Valid=750, Invalid=31470, Unknown=0, NotChecked=0, Total=32220 [2021-05-02 12:16:43,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-05-02 12:16:43,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 147. [2021-05-02 12:16:43,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 97 states have (on average 1.0103092783505154) internal successors, (98), 97 states have internal predecessors, (98), 47 states have call successors, (47), 4 states have call predecessors, (47), 2 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2021-05-02 12:16:43,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 190 transitions. [2021-05-02 12:16:43,513 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 190 transitions. Word has length 269 [2021-05-02 12:16:43,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:16:43,513 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 190 transitions. [2021-05-02 12:16:43,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 92 states, 92 states have (on average 1.065217391304348) internal successors, (98), 48 states have internal predecessors, (98), 45 states have call successors, (47), 3 states have call predecessors, (47), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2021-05-02 12:16:43,513 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 190 transitions. [2021-05-02 12:16:43,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2021-05-02 12:16:43,514 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:16:43,514 INFO L523 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:16:43,729 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:16:43,729 INFO L428 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:16:43,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:16:43,729 INFO L82 PathProgramCache]: Analyzing trace with hash -495697842, now seen corresponding path program 44 times [2021-05-02 12:16:43,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:16:43,729 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330255593] [2021-05-02 12:16:43,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:16:43,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:50,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:16:50,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:50,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:16:50,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:50,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:16:50,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:50,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:16:50,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:50,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:16:50,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:50,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:16:50,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:50,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:16:50,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:50,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:16:50,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:50,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:16:50,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:50,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:16:50,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:50,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:16:50,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:50,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:16:50,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:50,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:16:50,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:50,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:16:50,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:50,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:16:50,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:50,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:16:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:50,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:16:50,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:50,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:16:50,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:50,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:16:50,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:50,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:16:50,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:50,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:16:50,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:50,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:16:50,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:50,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:16:50,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:50,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:16:50,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:50,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 12:16:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:50,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 12:16:50,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:50,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 12:16:50,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:50,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 12:16:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:50,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 12:16:50,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:50,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 12:16:50,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:50,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 12:16:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:50,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 12:16:50,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:50,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 12:16:50,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:50,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 12:16:50,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:50,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 12:16:50,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:50,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 12:16:50,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:50,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-05-02 12:16:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:50,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 12:16:50,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:50,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-05-02 12:16:50,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:50,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-05-02 12:16:50,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:50,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-05-02 12:16:50,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:50,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 12:16:50,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:50,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-05-02 12:16:50,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:50,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-05-02 12:16:50,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:50,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2021-05-02 12:16:50,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:50,714 INFO L134 CoverageAnalysis]: Checked inductivity of 5720 backedges. 0 proven. 2882 refuted. 0 times theorem prover too weak. 2838 trivial. 0 not checked. [2021-05-02 12:16:50,714 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:16:50,714 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330255593] [2021-05-02 12:16:50,715 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330255593] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:16:50,715 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290911495] [2021-05-02 12:16:50,715 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 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 12:16:50,814 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:16:50,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:16:50,820 WARN L261 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 443 conjunts are in the unsatisfiable core [2021-05-02 12:16:50,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:16:51,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:51,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:51,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:51,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:51,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:51,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:51,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:51,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:51,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:51,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:51,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:51,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:51,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:51,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:51,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:52,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:52,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:52,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:52,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:52,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:52,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:52,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:52,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:52,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:52,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:52,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:52,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:52,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:52,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:52,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:52,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:52,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:53,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:53,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:53,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:53,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:53,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:53,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:53,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:53,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:53,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:53,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:53,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:53,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:53,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:53,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:53,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:54,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:54,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:54,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:54,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:54,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:54,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:54,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:54,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:54,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:54,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:54,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:54,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:54,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:54,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:54,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:55,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:55,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:55,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:55,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:55,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:55,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:55,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:55,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:55,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:55,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:55,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:55,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:55,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:55,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:55,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:56,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:56,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:56,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:56,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:56,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:56,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:56,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:56,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:56,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:56,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:56,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:56,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:56,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:56,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:56,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:57,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:57,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:57,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:57,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:57,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:57,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:57,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:57,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:57,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:57,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:57,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:57,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:57,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:57,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:57,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:58,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:58,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:58,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:58,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:58,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:58,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:58,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:58,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:58,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:58,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:58,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:58,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:58,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:58,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:58,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:59,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:59,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:59,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:59,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:59,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:59,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:59,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:59,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:59,642 INFO L134 CoverageAnalysis]: Checked inductivity of 5720 backedges. 0 proven. 2882 refuted. 0 times theorem prover too weak. 2838 trivial. 0 not checked. [2021-05-02 12:16:59,642 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290911495] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:16:59,642 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:16:59,642 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 92] total 94 [2021-05-02 12:16:59,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627192879] [2021-05-02 12:16:59,643 INFO L460 AbstractCegarLoop]: Interpolant automaton has 94 states [2021-05-02 12:16:59,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:16:59,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-05-02 12:16:59,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=8512, Unknown=0, NotChecked=0, Total=8742 [2021-05-02 12:16:59,644 INFO L87 Difference]: Start difference. First operand 147 states and 190 transitions. Second operand has 94 states, 94 states have (on average 1.0638297872340425) internal successors, (100), 49 states have internal predecessors, (100), 46 states have call successors, (48), 3 states have call predecessors, (48), 2 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2021-05-02 12:17:20,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:17:20,523 INFO L93 Difference]: Finished difference Result 157 states and 202 transitions. [2021-05-02 12:17:20,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-05-02 12:17:20,525 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 1.0638297872340425) internal successors, (100), 49 states have internal predecessors, (100), 46 states have call successors, (48), 3 states have call predecessors, (48), 2 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Word has length 275 [2021-05-02 12:17:20,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:17:20,526 INFO L225 Difference]: With dead ends: 157 [2021-05-02 12:17:20,526 INFO L226 Difference]: Without dead ends: 152 [2021-05-02 12:17:20,527 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 320 SyntacticMatches, 44 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4009 ImplicationChecksByTransitivity, 24124.4ms TimeCoverageRelationStatistics Valid=767, Invalid=32905, Unknown=0, NotChecked=0, Total=33672 [2021-05-02 12:17:20,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-05-02 12:17:20,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 150. [2021-05-02 12:17:20,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 99 states have (on average 1.0101010101010102) internal successors, (100), 99 states have internal predecessors, (100), 48 states have call successors, (48), 4 states have call predecessors, (48), 2 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-05-02 12:17:20,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 194 transitions. [2021-05-02 12:17:20,547 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 194 transitions. Word has length 275 [2021-05-02 12:17:20,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:17:20,548 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 194 transitions. [2021-05-02 12:17:20,548 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 94 states, 94 states have (on average 1.0638297872340425) internal successors, (100), 49 states have internal predecessors, (100), 46 states have call successors, (48), 3 states have call predecessors, (48), 2 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2021-05-02 12:17:20,548 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 194 transitions. [2021-05-02 12:17:20,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-05-02 12:17:20,549 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:17:20,549 INFO L523 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:17:20,765 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-05-02 12:17:20,765 INFO L428 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:17:20,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:17:20,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1122585772, now seen corresponding path program 45 times [2021-05-02 12:17:20,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:17:20,765 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906180536] [2021-05-02 12:17:20,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:17:20,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:28,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:17:28,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:28,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:17:28,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:28,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:17:28,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:28,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:17:28,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:28,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:17:28,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:28,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:17:28,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:28,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:17:28,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:28,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:17:28,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:28,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:17:28,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:28,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:17:28,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:28,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:17:28,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:28,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:17:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:28,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:17:28,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:28,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:17:28,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:28,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:17:28,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:28,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:17:28,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:28,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:17:28,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:28,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:17:28,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:28,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:17:28,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:28,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:17:28,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:28,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:17:28,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:28,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:17:28,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:28,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:17:28,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:28,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:17:28,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:28,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 12:17:28,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:28,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 12:17:28,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:28,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 12:17:28,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:28,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 12:17:28,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:28,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 12:17:28,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:28,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 12:17:28,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:28,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 12:17:28,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:28,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 12:17:28,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:28,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 12:17:28,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:28,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 12:17:28,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:28,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 12:17:28,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:28,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 12:17:28,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:28,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-05-02 12:17:28,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:28,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 12:17:28,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:28,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-05-02 12:17:28,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:28,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-05-02 12:17:28,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:28,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-05-02 12:17:28,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:28,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 12:17:28,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:28,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-05-02 12:17:28,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:28,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-05-02 12:17:28,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:28,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2021-05-02 12:17:28,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:28,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 12:17:28,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:28,831 INFO L134 CoverageAnalysis]: Checked inductivity of 5985 backedges. 0 proven. 3015 refuted. 0 times theorem prover too weak. 2970 trivial. 0 not checked. [2021-05-02 12:17:28,831 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:17:28,831 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906180536] [2021-05-02 12:17:28,831 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906180536] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:17:28,831 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135957771] [2021-05-02 12:17:28,831 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 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 12:17:48,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2021-05-02 12:17:48,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:17:48,042 WARN L261 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 460 conjunts are in the unsatisfiable core [2021-05-02 12:17:48,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:17:48,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:48,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:48,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:48,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:48,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:48,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:48,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:48,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:48,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:48,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:48,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:49,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:49,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:49,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:49,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:49,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:49,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:49,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:49,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:49,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:49,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:49,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:49,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:49,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:49,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:49,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:49,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:49,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:49,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:50,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:50,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:50,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:50,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:50,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:50,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:50,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:50,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:50,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:50,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:50,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:50,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:50,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:50,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:50,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:51,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:51,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:51,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:51,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:51,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:51,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:51,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:51,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:51,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:51,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:51,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:51,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:51,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:51,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:51,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:52,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:52,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:52,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:52,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:52,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:52,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:52,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:52,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:52,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:52,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:52,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:52,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:53,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:53,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:53,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:53,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:53,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:53,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:53,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:53,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:53,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:53,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:53,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:53,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:53,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:53,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:53,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:54,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:54,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:54,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:54,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:54,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:54,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:54,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:54,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:54,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:54,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:54,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:54,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:54,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:54,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:54,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:55,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:55,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:55,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:55,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:55,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:55,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:55,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:55,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:55,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:55,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:56,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:56,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:56,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:56,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:56,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:56,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:56,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:56,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:56,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:56,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:56,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:57,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:57,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:57,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:57,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:57,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:57,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:57,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:57,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:57,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:58,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:58,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:17:58,280 INFO L134 CoverageAnalysis]: Checked inductivity of 5985 backedges. 0 proven. 3015 refuted. 0 times theorem prover too weak. 2970 trivial. 0 not checked. [2021-05-02 12:17:58,280 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135957771] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:17:58,280 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:17:58,280 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 94] total 96 [2021-05-02 12:17:58,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866064508] [2021-05-02 12:17:58,281 INFO L460 AbstractCegarLoop]: Interpolant automaton has 96 states [2021-05-02 12:17:58,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:17:58,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-05-02 12:17:58,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=8885, Unknown=0, NotChecked=0, Total=9120 [2021-05-02 12:17:58,281 INFO L87 Difference]: Start difference. First operand 150 states and 194 transitions. Second operand has 96 states, 96 states have (on average 1.0625) internal successors, (102), 50 states have internal predecessors, (102), 47 states have call successors, (49), 3 states have call predecessors, (49), 2 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-05-02 12:18:21,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:18:21,727 INFO L93 Difference]: Finished difference Result 160 states and 206 transitions. [2021-05-02 12:18:21,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-05-02 12:18:21,729 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.0625) internal successors, (102), 50 states have internal predecessors, (102), 47 states have call successors, (49), 3 states have call predecessors, (49), 2 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Word has length 281 [2021-05-02 12:18:21,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:18:21,730 INFO L225 Difference]: With dead ends: 160 [2021-05-02 12:18:21,730 INFO L226 Difference]: Without dead ends: 155 [2021-05-02 12:18:21,731 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 558 GetRequests, 320 SyntacticMatches, 52 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4204 ImplicationChecksByTransitivity, 27533.2ms TimeCoverageRelationStatistics Valid=784, Invalid=34372, Unknown=0, NotChecked=0, Total=35156 [2021-05-02 12:18:21,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-05-02 12:18:21,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 153. [2021-05-02 12:18:21,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 101 states have (on average 1.00990099009901) internal successors, (102), 101 states have internal predecessors, (102), 49 states have call successors, (49), 4 states have call predecessors, (49), 2 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2021-05-02 12:18:21,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 198 transitions. [2021-05-02 12:18:21,752 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 198 transitions. Word has length 281 [2021-05-02 12:18:21,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:18:21,753 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 198 transitions. [2021-05-02 12:18:21,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 96 states, 96 states have (on average 1.0625) internal successors, (102), 50 states have internal predecessors, (102), 47 states have call successors, (49), 3 states have call predecessors, (49), 2 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-05-02 12:18:21,753 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 198 transitions. [2021-05-02 12:18:21,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-05-02 12:18:21,754 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:18:21,754 INFO L523 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:18:21,955 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-05-02 12:18:21,956 INFO L428 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:18:21,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:18:21,956 INFO L82 PathProgramCache]: Analyzing trace with hash -286319990, now seen corresponding path program 46 times [2021-05-02 12:18:21,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:18:21,956 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791662667] [2021-05-02 12:18:21,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:18:22,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:18:30,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:18:30,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:18:30,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:18:30,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:18:30,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:18:30,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:18:30,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:18:30,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:18:30,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:18:30,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:18:30,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:18:30,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:18:30,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:18:30,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:18:30,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:18:30,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:18:30,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:18:30,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:18:30,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:18:30,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:18:30,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:18:30,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:18:30,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:18:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:18:30,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:18:30,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:18:30,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:18:30,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:18:30,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:18:30,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:18:30,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:18:30,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:18:30,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:18:30,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:18:30,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:18:30,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:18:30,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:18:30,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:18:30,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:18:30,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:18:30,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:18:30,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:18:30,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:18:30,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:18:30,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:18:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:18:30,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:18:30,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:18:30,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 12:18:30,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:18:30,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 12:18:30,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:18:30,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 12:18:30,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:18:30,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 12:18:30,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:18:30,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 12:18:30,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:18:30,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 12:18:30,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:18:30,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 12:18:30,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:18:30,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 12:18:30,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:18:30,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 12:18:30,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:18:30,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 12:18:30,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:18:30,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 12:18:30,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:18:30,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 12:18:30,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:18:30,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-05-02 12:18:30,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:18:30,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 12:18:30,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:18:30,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-05-02 12:18:30,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:18:30,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-05-02 12:18:30,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:18:30,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-05-02 12:18:30,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:18:30,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 12:18:30,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:18:30,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-05-02 12:18:30,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:18:30,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-05-02 12:18:30,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:18:30,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2021-05-02 12:18:30,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:18:30,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 12:18:30,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:18:30,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2021-05-02 12:18:30,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:18:30,879 INFO L134 CoverageAnalysis]: Checked inductivity of 6256 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 3105 trivial. 0 not checked. [2021-05-02 12:18:30,879 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:18:30,879 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791662667] [2021-05-02 12:18:30,879 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791662667] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:18:30,879 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075809466] [2021-05-02 12:18:30,879 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 12:18:30,982 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:18:30,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:18:30,987 WARN L261 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 463 conjunts are in the unsatisfiable core [2021-05-02 12:18:30,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:18:31,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:31,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:31,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:31,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:31,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:31,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:31,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:31,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:31,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:31,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:31,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:32,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:32,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:32,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:32,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:32,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:32,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:32,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:32,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:32,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:32,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:32,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:32,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:32,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:32,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:32,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:33,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:33,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:33,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:33,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:33,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:33,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:33,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:33,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:33,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:33,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:33,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:33,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:34,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:34,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:34,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:34,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:34,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:34,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:34,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:34,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:34,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:34,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:34,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:34,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:34,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:35,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:35,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:35,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:35,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:35,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:35,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:35,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:35,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:35,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:35,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:35,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:35,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:35,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:35,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:36,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:36,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:36,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:36,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:36,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:36,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:36,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:36,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:36,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:36,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:36,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:36,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:37,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:37,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:37,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:37,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:37,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:37,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:37,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:37,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:37,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:37,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:37,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:37,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:38,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:38,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:38,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:38,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:38,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:38,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:38,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:38,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:38,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:38,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:38,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:38,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:38,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:38,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:38,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:39,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:39,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:39,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:39,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:39,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:39,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:39,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:39,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:39,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:39,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:39,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:39,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:40,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:40,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:40,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:40,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:40,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:40,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:40,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:40,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:40,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:40,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:40,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:40,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:40,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:40,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:40,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:41,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:41,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:41,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:41,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:41,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:18:41,590 INFO L134 CoverageAnalysis]: Checked inductivity of 6256 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 3105 trivial. 0 not checked. [2021-05-02 12:18:41,590 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075809466] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:18:41,591 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:18:41,591 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 96] total 98 [2021-05-02 12:18:41,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978365938] [2021-05-02 12:18:41,591 INFO L460 AbstractCegarLoop]: Interpolant automaton has 98 states [2021-05-02 12:18:41,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:18:41,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2021-05-02 12:18:41,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=9266, Unknown=0, NotChecked=0, Total=9506 [2021-05-02 12:18:41,592 INFO L87 Difference]: Start difference. First operand 153 states and 198 transitions. Second operand has 98 states, 98 states have (on average 1.0612244897959184) internal successors, (104), 51 states have internal predecessors, (104), 48 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2021-05-02 12:19:07,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:19:07,767 INFO L93 Difference]: Finished difference Result 163 states and 210 transitions. [2021-05-02 12:19:07,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2021-05-02 12:19:07,769 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 1.0612244897959184) internal successors, (104), 51 states have internal predecessors, (104), 48 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Word has length 287 [2021-05-02 12:19:07,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:19:07,770 INFO L225 Difference]: With dead ends: 163 [2021-05-02 12:19:07,770 INFO L226 Difference]: Without dead ends: 158 [2021-05-02 12:19:07,771 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 334 SyntacticMatches, 46 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4375 ImplicationChecksByTransitivity, 29624.9ms TimeCoverageRelationStatistics Valid=801, Invalid=35871, Unknown=0, NotChecked=0, Total=36672 [2021-05-02 12:19:07,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-05-02 12:19:07,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 156. [2021-05-02 12:19:07,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 103 states have (on average 1.0097087378640777) internal successors, (104), 103 states have internal predecessors, (104), 50 states have call successors, (50), 4 states have call predecessors, (50), 2 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2021-05-02 12:19:07,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 202 transitions. [2021-05-02 12:19:07,793 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 202 transitions. Word has length 287 [2021-05-02 12:19:07,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:19:07,793 INFO L480 AbstractCegarLoop]: Abstraction has 156 states and 202 transitions. [2021-05-02 12:19:07,793 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 98 states, 98 states have (on average 1.0612244897959184) internal successors, (104), 51 states have internal predecessors, (104), 48 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2021-05-02 12:19:07,793 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 202 transitions. [2021-05-02 12:19:07,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-05-02 12:19:07,794 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:19:07,794 INFO L523 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:19:08,004 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-05-02 12:19:08,005 INFO L428 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:19:08,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:19:08,005 INFO L82 PathProgramCache]: Analyzing trace with hash 5147112, now seen corresponding path program 47 times [2021-05-02 12:19:08,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:19:08,005 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557804195] [2021-05-02 12:19:08,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:19:08,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:19:17,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:19:17,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:19:17,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:19:17,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:19:17,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:19:17,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:19:17,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:19:17,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:19:17,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:19:17,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:19:17,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:19:17,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:19:17,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:19:17,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:19:17,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:19:17,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:19:17,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:19:17,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:19:17,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:19:17,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:19:17,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:19:17,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:19:17,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:19:17,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:19:17,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:19:17,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:19:17,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:19:17,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:19:17,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:19:17,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:19:17,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:19:17,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:19:17,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:19:17,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:19:17,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:19:17,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:19:17,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:19:17,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:19:17,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:19:17,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:19:17,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:19:17,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:19:17,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:19:17,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:19:17,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:19:17,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:19:17,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:19:17,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:19:17,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 12:19:17,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:19:17,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 12:19:17,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:19:17,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 12:19:17,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:19:17,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 12:19:17,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:19:17,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 12:19:17,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:19:17,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 12:19:17,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:19:17,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 12:19:17,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:19:17,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 12:19:17,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:19:17,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 12:19:17,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:19:17,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 12:19:17,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:19:17,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 12:19:17,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:19:18,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 12:19:18,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:19:18,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-05-02 12:19:18,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:19:18,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 12:19:18,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:19:18,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-05-02 12:19:18,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:19:18,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-05-02 12:19:18,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:19:18,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-05-02 12:19:18,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:19:18,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 12:19:18,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:19:18,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-05-02 12:19:18,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:19:18,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-05-02 12:19:18,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:19:18,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2021-05-02 12:19:18,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:19:18,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 12:19:18,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:19:18,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2021-05-02 12:19:18,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:19:18,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-05-02 12:19:18,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:19:18,048 INFO L134 CoverageAnalysis]: Checked inductivity of 6533 backedges. 0 proven. 3290 refuted. 0 times theorem prover too weak. 3243 trivial. 0 not checked. [2021-05-02 12:19:18,048 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:19:18,048 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557804195] [2021-05-02 12:19:18,048 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557804195] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:19:18,048 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653882151] [2021-05-02 12:19:18,048 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