/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_unwindbound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 21:42:55,318 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 21:42:55,319 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 21:42:55,342 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 21:42:55,343 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 21:42:55,343 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 21:42:55,344 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 21:42:55,346 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 21:42:55,347 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 21:42:55,347 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 21:42:55,348 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 21:42:55,348 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 21:42:55,349 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 21:42:55,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 21:42:55,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 21:42:55,351 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 21:42:55,351 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 21:42:55,352 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 21:42:55,353 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 21:42:55,354 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 21:42:55,355 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 21:42:55,356 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 21:42:55,357 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 21:42:55,357 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 21:42:55,359 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 21:42:55,364 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 21:42:55,365 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 21:42:55,365 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 21:42:55,366 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 21:42:55,372 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 21:42:55,372 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 21:42:55,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 21:42:55,373 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 21:42:55,373 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 21:42:55,373 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 21:42:55,374 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 21:42:55,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 21:42:55,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 21:42:55,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 21:42:55,374 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 21:42:55,374 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 21:42:55,374 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 21:42:55,374 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 21:42:55,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 21:42:55,375 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 21:42:55,375 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 21:42:55,375 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 21:42:55,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 21:42:55,375 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 21:42:55,375 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 21:42:55,376 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 21:42:55,376 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 21:42:55,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 21:42:55,593 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 21:42:55,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 21:42:55,595 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 21:42:55,596 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 21:42:55,596 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_unwindbound20.c [2021-05-02 21:42:55,650 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ec2f41c4/de919b2cfce640c0ac527c5c6eb8e820/FLAGc880a0ff8 [2021-05-02 21:42:56,015 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 21:42:56,016 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_unwindbound20.c [2021-05-02 21:42:56,021 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ec2f41c4/de919b2cfce640c0ac527c5c6eb8e820/FLAGc880a0ff8 [2021-05-02 21:42:56,435 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ec2f41c4/de919b2cfce640c0ac527c5c6eb8e820 [2021-05-02 21:42:56,439 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 21:42:56,446 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 21:42:56,456 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 21:42:56,456 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 21:42:56,459 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 21:42:56,460 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 09:42:56" (1/1) ... [2021-05-02 21:42:56,460 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a364c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:42:56, skipping insertion in model container [2021-05-02 21:42:56,461 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 09:42:56" (1/1) ... [2021-05-02 21:42:56,468 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 21:42:56,478 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 21:42:56,597 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_unwindbound20.c[524,537] [2021-05-02 21:42:56,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 21:42:56,689 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 21:42:56,699 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_unwindbound20.c[524,537] [2021-05-02 21:42:56,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 21:42:56,726 INFO L208 MainTranslator]: Completed translation [2021-05-02 21:42:56,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:42:56 WrapperNode [2021-05-02 21:42:56,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 21:42:56,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 21:42:56,727 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 21:42:56,727 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 21:42:56,739 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:42:56" (1/1) ... [2021-05-02 21:42:56,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:42:56" (1/1) ... [2021-05-02 21:42:56,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:42:56" (1/1) ... [2021-05-02 21:42:56,751 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:42:56" (1/1) ... [2021-05-02 21:42:56,756 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:42:56" (1/1) ... [2021-05-02 21:42:56,759 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:42:56" (1/1) ... [2021-05-02 21:42:56,759 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:42:56" (1/1) ... [2021-05-02 21:42:56,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 21:42:56,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 21:42:56,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 21:42:56,761 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 21:42:56,762 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:42:56" (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 21:42:56,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 21:42:56,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 21:42:56,877 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 21:42:56,877 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 21:42:56,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 21:42:56,878 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 21:42:56,878 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 21:42:56,878 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 21:42:56,878 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 21:42:56,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 21:42:56,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 21:42:56,879 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 21:42:56,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 21:42:56,880 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 21:42:56,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 21:42:56,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 21:42:56,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 21:42:56,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 21:42:56,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 21:42:56,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 21:42:57,035 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 21:42:57,036 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 21:42:57,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 09:42:57 BoogieIcfgContainer [2021-05-02 21:42:57,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 21:42:57,037 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 21:42:57,037 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 21:42:57,038 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 21:42:57,039 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 09:42:57" (1/1) ... [2021-05-02 21:42:57,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 09:42:57 BasicIcfg [2021-05-02 21:42:57,051 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 21:42:57,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 21:42:57,052 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 21:42:57,053 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 21:42:57,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 09:42:56" (1/4) ... [2021-05-02 21:42:57,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@543d4325 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 09:42:57, skipping insertion in model container [2021-05-02 21:42:57,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:42:56" (2/4) ... [2021-05-02 21:42:57,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@543d4325 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 09:42:57, skipping insertion in model container [2021-05-02 21:42:57,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 09:42:57" (3/4) ... [2021-05-02 21:42:57,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@543d4325 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 09:42:57, skipping insertion in model container [2021-05-02 21:42:57,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 09:42:57" (4/4) ... [2021-05-02 21:42:57,055 INFO L111 eAbstractionObserver]: Analyzing ICFG prod4br-ll_unwindbound20.cJordan [2021-05-02 21:42:57,058 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 21:42:57,061 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 21:42:57,071 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 21:42:57,083 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 21:42:57,083 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 21:42:57,083 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 21:42:57,083 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 21:42:57,083 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 21:42:57,083 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 21:42:57,083 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 21:42:57,083 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 21:42:57,091 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-02 21:42:57,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-02 21:42:57,095 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:42:57,096 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 21:42:57,096 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:42:57,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:42:57,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1119019339, now seen corresponding path program 1 times [2021-05-02 21:42:57,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:42:57,105 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648599755] [2021-05-02 21:42:57,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:42:57,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:42:57,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 21:42:57,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:42:57,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 21:42:57,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:42:57,233 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 21:42:57,234 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:42:57,234 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648599755] [2021-05-02 21:42:57,234 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648599755] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 21:42:57,234 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 21:42:57,234 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 21:42:57,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387783295] [2021-05-02 21:42:57,237 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 21:42:57,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:42:57,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 21:42:57,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 21:42:57,247 INFO L87 Difference]: Start difference. First operand has 32 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 21:42:57,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:42:57,307 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2021-05-02 21:42:57,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 21:42:57,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-05-02 21:42:57,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:42:57,313 INFO L225 Difference]: With dead ends: 33 [2021-05-02 21:42:57,313 INFO L226 Difference]: Without dead ends: 28 [2021-05-02 21:42:57,314 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 21:42:57,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-05-02 21:42:57,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2021-05-02 21:42:57,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 21:42:57,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2021-05-02 21:42:57,334 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 17 [2021-05-02 21:42:57,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:42:57,335 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2021-05-02 21:42:57,335 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 21:42:57,335 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2021-05-02 21:42:57,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-02 21:42:57,335 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:42:57,336 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:42:57,336 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 21:42:57,336 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:42:57,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:42:57,336 INFO L82 PathProgramCache]: Analyzing trace with hash -496973861, now seen corresponding path program 1 times [2021-05-02 21:42:57,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:42:57,337 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606527658] [2021-05-02 21:42:57,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:42:57,350 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:42:57,350 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1947864119] [2021-05-02 21:42:57,350 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 21:42:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:42:57,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-02 21:42:57,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:42:57,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:57,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:57,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:57,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:57,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:57,552 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 21:42:57,552 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:42:57,553 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606527658] [2021-05-02 21:42:57,554 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:42:57,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947864119] [2021-05-02 21:42:57,554 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947864119] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 21:42:57,554 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 21:42:57,554 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 21:42:57,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016304633] [2021-05-02 21:42:57,555 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 21:42:57,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:42:57,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 21:42:57,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 21:42:57,557 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 21:42:57,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:42:57,569 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2021-05-02 21:42:57,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 21:42:57,569 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2021-05-02 21:42:57,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:42:57,570 INFO L225 Difference]: With dead ends: 29 [2021-05-02 21:42:57,571 INFO L226 Difference]: Without dead ends: 29 [2021-05-02 21:42:57,572 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.6ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 21:42:57,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-05-02 21:42:57,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-05-02 21:42:57,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 20 states have internal predecessors, (25), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 21:42:57,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2021-05-02 21:42:57,581 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 18 [2021-05-02 21:42:57,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:42:57,581 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-05-02 21:42:57,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 21:42:57,582 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2021-05-02 21:42:57,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-02 21:42:57,587 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:42:57,587 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:42:57,802 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 21:42:57,802 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:42:57,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:42:57,804 INFO L82 PathProgramCache]: Analyzing trace with hash -495871594, now seen corresponding path program 1 times [2021-05-02 21:42:57,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:42:57,805 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146615620] [2021-05-02 21:42:57,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:42:57,819 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:42:57,819 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2040411518] [2021-05-02 21:42:57,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:42:57,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:42:57,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-02 21:42:57,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:42:57,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:57,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:57,975 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 21:42:57,975 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:42:57,975 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146615620] [2021-05-02 21:42:57,975 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:42:57,975 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040411518] [2021-05-02 21:42:57,975 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040411518] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 21:42:57,975 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 21:42:57,975 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-02 21:42:57,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59320606] [2021-05-02 21:42:57,976 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 21:42:57,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:42:57,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 21:42:57,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-02 21:42:57,976 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 8 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 21:42:58,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:42:58,045 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2021-05-02 21:42:58,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 21:42:58,045 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2021-05-02 21:42:58,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:42:58,046 INFO L225 Difference]: With dead ends: 40 [2021-05-02 21:42:58,046 INFO L226 Difference]: Without dead ends: 40 [2021-05-02 21:42:58,046 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 36.3ms TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-05-02 21:42:58,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-05-02 21:42:58,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 34. [2021-05-02 21:42:58,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 24 states have internal predecessors, (28), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-02 21:42:58,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2021-05-02 21:42:58,050 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 18 [2021-05-02 21:42:58,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:42:58,050 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2021-05-02 21:42:58,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 21:42:58,051 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2021-05-02 21:42:58,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-05-02 21:42:58,051 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:42:58,051 INFO L523 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:42:58,269 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:42:58,269 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:42:58,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:42:58,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1025358414, now seen corresponding path program 1 times [2021-05-02 21:42:58,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:42:58,270 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358340200] [2021-05-02 21:42:58,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:42:58,280 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:42:58,280 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [259360271] [2021-05-02 21:42:58,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:42:58,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:42:58,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 21:42:58,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:42:58,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:58,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:58,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:58,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:58,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:58,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:58,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:58,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:58,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:58,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:58,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:58,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:58,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:58,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 21:42:58,487 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:42:58,487 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358340200] [2021-05-02 21:42:58,487 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:42:58,487 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259360271] [2021-05-02 21:42:58,487 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259360271] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:42:58,487 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:42:58,487 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-05-02 21:42:58,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496654292] [2021-05-02 21:42:58,488 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 21:42:58,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:42:58,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 21:42:58,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-05-02 21:42:58,488 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 9 states have internal predecessors, (16), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 21:42:58,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:42:58,749 INFO L93 Difference]: Finished difference Result 49 states and 62 transitions. [2021-05-02 21:42:58,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-02 21:42:58,749 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 9 states have internal predecessors, (16), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2021-05-02 21:42:58,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:42:58,751 INFO L225 Difference]: With dead ends: 49 [2021-05-02 21:42:58,751 INFO L226 Difference]: Without dead ends: 43 [2021-05-02 21:42:58,751 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 181.1ms TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2021-05-02 21:42:58,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-05-02 21:42:58,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2021-05-02 21:42:58,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 29 states have internal predecessors, (36), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-02 21:42:58,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2021-05-02 21:42:58,755 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 24 [2021-05-02 21:42:58,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:42:58,755 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2021-05-02 21:42:58,755 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 9 states have internal predecessors, (16), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 21:42:58,755 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2021-05-02 21:42:58,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-05-02 21:42:58,755 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:42:58,755 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:42:58,971 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:42:58,972 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:42:58,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:42:58,974 INFO L82 PathProgramCache]: Analyzing trace with hash -2117889998, now seen corresponding path program 1 times [2021-05-02 21:42:58,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:42:58,974 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556899570] [2021-05-02 21:42:58,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:42:58,983 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:42:58,983 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [293510878] [2021-05-02 21:42:58,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:42:59,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:42:59,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 21:42:59,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:42:59,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:59,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:59,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:59,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:59,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:59,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:59,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:59,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:59,089 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 21:42:59,089 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:42:59,089 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556899570] [2021-05-02 21:42:59,089 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:42:59,089 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293510878] [2021-05-02 21:42:59,089 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293510878] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:42:59,090 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:42:59,090 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-05-02 21:42:59,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330216942] [2021-05-02 21:42:59,090 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 21:42:59,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:42:59,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 21:42:59,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-02 21:42:59,090 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 21:42:59,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:42:59,108 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2021-05-02 21:42:59,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 21:42:59,109 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 27 [2021-05-02 21:42:59,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:42:59,109 INFO L225 Difference]: With dead ends: 48 [2021-05-02 21:42:59,109 INFO L226 Difference]: Without dead ends: 48 [2021-05-02 21:42:59,110 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 9.5ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 21:42:59,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-05-02 21:42:59,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-05-02 21:42:59,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 36 states have internal predecessors, (47), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-02 21:42:59,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 61 transitions. [2021-05-02 21:42:59,113 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 61 transitions. Word has length 27 [2021-05-02 21:42:59,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:42:59,113 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 61 transitions. [2021-05-02 21:42:59,113 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 21:42:59,113 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 61 transitions. [2021-05-02 21:42:59,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-05-02 21:42:59,114 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:42:59,114 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:42:59,331 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:42:59,331 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:42:59,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:42:59,332 INFO L82 PathProgramCache]: Analyzing trace with hash -2116787731, now seen corresponding path program 1 times [2021-05-02 21:42:59,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:42:59,332 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849453887] [2021-05-02 21:42:59,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:42:59,339 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:42:59,339 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1527234958] [2021-05-02 21:42:59,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 21:42:59,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:42:59,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 37 conjunts are in the unsatisfiable core [2021-05-02 21:42:59,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:42:59,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:59,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:59,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:59,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:59,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:59,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:59,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:59,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:59,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:59,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:59,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:59,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:59,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:59,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:59,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:59,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:59,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:59,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:59,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:59,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:59,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:59,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:59,633 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 21:42:59,633 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:42:59,633 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849453887] [2021-05-02 21:42:59,633 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:42:59,633 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527234958] [2021-05-02 21:42:59,633 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527234958] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:42:59,633 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:42:59,633 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-05-02 21:42:59,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940925511] [2021-05-02 21:42:59,634 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 21:42:59,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:42:59,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 21:42:59,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-05-02 21:42:59,634 INFO L87 Difference]: Start difference. First operand 48 states and 61 transitions. Second operand has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 9 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 21:43:04,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:43:04,054 INFO L93 Difference]: Finished difference Result 61 states and 79 transitions. [2021-05-02 21:43:04,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 21:43:04,055 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 9 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2021-05-02 21:43:04,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:43:04,055 INFO L225 Difference]: With dead ends: 61 [2021-05-02 21:43:04,055 INFO L226 Difference]: Without dead ends: 61 [2021-05-02 21:43:04,056 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 70.6ms TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-05-02 21:43:04,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-05-02 21:43:04,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2021-05-02 21:43:04,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 40 states have (on average 1.3) internal successors, (52), 42 states have internal predecessors, (52), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-02 21:43:04,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 68 transitions. [2021-05-02 21:43:04,059 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 68 transitions. Word has length 27 [2021-05-02 21:43:04,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:43:04,059 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 68 transitions. [2021-05-02 21:43:04,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 9 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 21:43:04,060 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 68 transitions. [2021-05-02 21:43:04,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-02 21:43:04,060 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:43:04,060 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:43:04,269 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:43:04,269 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:43:04,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:43:04,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1857795251, now seen corresponding path program 1 times [2021-05-02 21:43:04,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:43:04,270 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687841527] [2021-05-02 21:43:04,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:43:04,277 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:43:04,277 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [21618109] [2021-05-02 21:43:04,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 21:43:04,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:43:04,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-02 21:43:04,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:43:04,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:04,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:04,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:04,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:04,502 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 21:43:04,502 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:43:04,502 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687841527] [2021-05-02 21:43:04,502 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:43:04,502 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21618109] [2021-05-02 21:43:04,502 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21618109] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:43:04,502 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:43:04,502 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-05-02 21:43:04,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547417472] [2021-05-02 21:43:04,503 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 21:43:04,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:43:04,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 21:43:04,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-05-02 21:43:04,503 INFO L87 Difference]: Start difference. First operand 55 states and 68 transitions. Second operand has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 21:43:08,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:43:08,854 INFO L93 Difference]: Finished difference Result 64 states and 79 transitions. [2021-05-02 21:43:08,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 21:43:08,854 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2021-05-02 21:43:08,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:43:08,855 INFO L225 Difference]: With dead ends: 64 [2021-05-02 21:43:08,855 INFO L226 Difference]: Without dead ends: 64 [2021-05-02 21:43:08,855 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 104.7ms TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-05-02 21:43:08,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-05-02 21:43:08,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-05-02 21:43:08,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 47 states have (on average 1.297872340425532) internal successors, (61), 49 states have internal predecessors, (61), 10 states have call successors, (10), 7 states have call predecessors, (10), 6 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-02 21:43:08,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 79 transitions. [2021-05-02 21:43:08,859 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 79 transitions. Word has length 28 [2021-05-02 21:43:08,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:43:08,859 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 79 transitions. [2021-05-02 21:43:08,860 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 21:43:08,860 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 79 transitions. [2021-05-02 21:43:08,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-02 21:43:08,860 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:43:08,860 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:43:09,068 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:43:09,069 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:43:09,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:43:09,069 INFO L82 PathProgramCache]: Analyzing trace with hash -2004143825, now seen corresponding path program 1 times [2021-05-02 21:43:09,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:43:09,069 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023593369] [2021-05-02 21:43:09,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:43:09,075 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:43:09,075 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1236829392] [2021-05-02 21:43:09,076 INFO L95 rtionOrderModulation]: Keeping assertion order 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 21:43:09,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:43:09,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 34 conjunts are in the unsatisfiable core [2021-05-02 21:43:09,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:43:09,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:09,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:09,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:09,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:09,289 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 21:43:09,289 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:43:09,289 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023593369] [2021-05-02 21:43:09,289 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:43:09,289 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236829392] [2021-05-02 21:43:09,289 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236829392] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:43:09,289 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:43:09,289 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-05-02 21:43:09,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063981072] [2021-05-02 21:43:09,290 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 21:43:09,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:43:09,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 21:43:09,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-05-02 21:43:09,290 INFO L87 Difference]: Start difference. First operand 64 states and 79 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 9 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 21:43:14,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:43:14,204 INFO L93 Difference]: Finished difference Result 77 states and 96 transitions. [2021-05-02 21:43:14,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 21:43:14,204 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 9 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2021-05-02 21:43:14,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:43:14,205 INFO L225 Difference]: With dead ends: 77 [2021-05-02 21:43:14,205 INFO L226 Difference]: Without dead ends: 77 [2021-05-02 21:43:14,205 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 92.8ms TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-05-02 21:43:14,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-05-02 21:43:14,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 74. [2021-05-02 21:43:14,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 55 states have (on average 1.290909090909091) internal successors, (71), 57 states have internal predecessors, (71), 11 states have call successors, (11), 8 states have call predecessors, (11), 7 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2021-05-02 21:43:14,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 91 transitions. [2021-05-02 21:43:14,210 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 91 transitions. Word has length 29 [2021-05-02 21:43:14,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:43:14,210 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 91 transitions. [2021-05-02 21:43:14,210 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 9 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 21:43:14,210 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 91 transitions. [2021-05-02 21:43:14,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-02 21:43:14,210 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:43:14,210 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:43:14,421 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:43:14,421 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:43:14,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:43:14,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1116640144, now seen corresponding path program 1 times [2021-05-02 21:43:14,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:43:14,422 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153062476] [2021-05-02 21:43:14,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:43:14,427 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:43:14,428 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [387524899] [2021-05-02 21:43:14,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 21:43:14,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:43:14,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 29 conjunts are in the unsatisfiable core [2021-05-02 21:43:14,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:43:14,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:14,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:14,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:14,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:14,630 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 21:43:14,630 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:43:14,631 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153062476] [2021-05-02 21:43:14,631 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:43:14,631 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387524899] [2021-05-02 21:43:14,631 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387524899] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:43:14,631 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:43:14,631 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-05-02 21:43:14,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841590992] [2021-05-02 21:43:14,631 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 21:43:14,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:43:14,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 21:43:14,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-05-02 21:43:14,632 INFO L87 Difference]: Start difference. First operand 74 states and 91 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 21:43:14,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:43:14,755 INFO L93 Difference]: Finished difference Result 85 states and 107 transitions. [2021-05-02 21:43:14,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 21:43:14,755 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2021-05-02 21:43:14,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:43:14,756 INFO L225 Difference]: With dead ends: 85 [2021-05-02 21:43:14,756 INFO L226 Difference]: Without dead ends: 85 [2021-05-02 21:43:14,756 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 62.0ms TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-05-02 21:43:14,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-05-02 21:43:14,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 72. [2021-05-02 21:43:14,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 53 states have (on average 1.3018867924528301) internal successors, (69), 55 states have internal predecessors, (69), 11 states have call successors, (11), 8 states have call predecessors, (11), 7 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2021-05-02 21:43:14,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 89 transitions. [2021-05-02 21:43:14,761 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 89 transitions. Word has length 29 [2021-05-02 21:43:14,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:43:14,761 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 89 transitions. [2021-05-02 21:43:14,761 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 21:43:14,761 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 89 transitions. [2021-05-02 21:43:14,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-02 21:43:14,762 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:43:14,762 INFO L523 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:43:14,972 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-05-02 21:43:14,973 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:43:14,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:43:14,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1454559031, now seen corresponding path program 1 times [2021-05-02 21:43:14,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:43:14,973 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256808183] [2021-05-02 21:43:14,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:43:14,985 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:43:14,985 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1741341741] [2021-05-02 21:43:14,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 21:43:15,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:43:15,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-02 21:43:15,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:43:15,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:15,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:15,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:15,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:15,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:15,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:15,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:15,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:15,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:15,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:15,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:15,109 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:43:15,109 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:43:15,109 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256808183] [2021-05-02 21:43:15,109 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:43:15,109 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741341741] [2021-05-02 21:43:15,109 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741341741] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 21:43:15,109 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 21:43:15,109 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-02 21:43:15,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112087485] [2021-05-02 21:43:15,109 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 21:43:15,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:43:15,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 21:43:15,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-02 21:43:15,110 INFO L87 Difference]: Start difference. First operand 72 states and 89 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 21:43:15,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:43:15,181 INFO L93 Difference]: Finished difference Result 90 states and 118 transitions. [2021-05-02 21:43:15,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 21:43:15,181 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 33 [2021-05-02 21:43:15,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:43:15,182 INFO L225 Difference]: With dead ends: 90 [2021-05-02 21:43:15,182 INFO L226 Difference]: Without dead ends: 90 [2021-05-02 21:43:15,182 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 39.7ms TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-05-02 21:43:15,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-05-02 21:43:15,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 85. [2021-05-02 21:43:15,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 63 states have (on average 1.3333333333333333) internal successors, (84), 66 states have internal predecessors, (84), 14 states have call successors, (14), 8 states have call predecessors, (14), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-02 21:43:15,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 110 transitions. [2021-05-02 21:43:15,189 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 110 transitions. Word has length 33 [2021-05-02 21:43:15,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:43:15,189 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 110 transitions. [2021-05-02 21:43:15,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 21:43:15,189 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 110 transitions. [2021-05-02 21:43:15,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-05-02 21:43:15,190 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:43:15,190 INFO L523 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:43:15,405 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:43:15,405 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:43:15,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:43:15,405 INFO L82 PathProgramCache]: Analyzing trace with hash 482870923, now seen corresponding path program 1 times [2021-05-02 21:43:15,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:43:15,405 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673484396] [2021-05-02 21:43:15,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:43:15,413 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:43:15,413 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1275787474] [2021-05-02 21:43:15,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 21:43:15,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:43:15,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-02 21:43:15,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:43:15,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:15,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:15,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:15,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:15,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:15,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:15,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:15,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:15,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:15,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:15,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:15,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:15,663 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 21:43:15,663 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:43:15,663 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673484396] [2021-05-02 21:43:15,663 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:43:15,663 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275787474] [2021-05-02 21:43:15,663 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275787474] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:43:15,663 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:43:15,663 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-05-02 21:43:15,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409979925] [2021-05-02 21:43:15,664 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-02 21:43:15,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:43:15,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-02 21:43:15,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-05-02 21:43:15,664 INFO L87 Difference]: Start difference. First operand 85 states and 110 transitions. Second operand has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 21:43:17,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:43:17,895 INFO L93 Difference]: Finished difference Result 101 states and 135 transitions. [2021-05-02 21:43:17,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-02 21:43:17,895 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 35 [2021-05-02 21:43:17,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:43:17,896 INFO L225 Difference]: With dead ends: 101 [2021-05-02 21:43:17,896 INFO L226 Difference]: Without dead ends: 101 [2021-05-02 21:43:17,897 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 203.4ms TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2021-05-02 21:43:17,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-05-02 21:43:17,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 94. [2021-05-02 21:43:17,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 69 states have (on average 1.3333333333333333) internal successors, (92), 73 states have internal predecessors, (92), 16 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2021-05-02 21:43:17,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 122 transitions. [2021-05-02 21:43:17,901 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 122 transitions. Word has length 35 [2021-05-02 21:43:17,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:43:17,901 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 122 transitions. [2021-05-02 21:43:17,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 21:43:17,901 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 122 transitions. [2021-05-02 21:43:17,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-05-02 21:43:17,902 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:43:17,902 INFO L523 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:43:18,112 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-05-02 21:43:18,113 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:43:18,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:43:18,113 INFO L82 PathProgramCache]: Analyzing trace with hash 189467916, now seen corresponding path program 1 times [2021-05-02 21:43:18,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:43:18,114 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830848799] [2021-05-02 21:43:18,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:43:18,121 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:43:18,122 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2061305884] [2021-05-02 21:43:18,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 21:43:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:43:18,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-02 21:43:18,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:43:18,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:18,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:18,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:18,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:18,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:18,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:18,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:18,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:18,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:18,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:18,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:18,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:18,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:18,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:18,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:18,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:18,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:18,341 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 21:43:18,341 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:43:18,341 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830848799] [2021-05-02 21:43:18,341 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:43:18,342 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061305884] [2021-05-02 21:43:18,342 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061305884] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:43:18,342 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:43:18,342 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-05-02 21:43:18,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93545931] [2021-05-02 21:43:18,342 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-02 21:43:18,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:43:18,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-02 21:43:18,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-05-02 21:43:18,343 INFO L87 Difference]: Start difference. First operand 94 states and 122 transitions. Second operand has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 21:43:18,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:43:18,901 INFO L93 Difference]: Finished difference Result 121 states and 161 transitions. [2021-05-02 21:43:18,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-02 21:43:18,902 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 35 [2021-05-02 21:43:18,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:43:18,902 INFO L225 Difference]: With dead ends: 121 [2021-05-02 21:43:18,902 INFO L226 Difference]: Without dead ends: 110 [2021-05-02 21:43:18,903 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 329.6ms TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2021-05-02 21:43:18,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-05-02 21:43:18,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 101. [2021-05-02 21:43:18,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 75 states have (on average 1.3466666666666667) internal successors, (101), 79 states have internal predecessors, (101), 17 states have call successors, (17), 9 states have call predecessors, (17), 8 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2021-05-02 21:43:18,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 133 transitions. [2021-05-02 21:43:18,907 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 133 transitions. Word has length 35 [2021-05-02 21:43:18,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:43:18,907 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 133 transitions. [2021-05-02 21:43:18,907 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 21:43:18,908 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 133 transitions. [2021-05-02 21:43:18,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-02 21:43:18,908 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:43:18,908 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:43:19,121 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-05-02 21:43:19,121 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:43:19,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:43:19,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1979136443, now seen corresponding path program 2 times [2021-05-02 21:43:19,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:43:19,121 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923303656] [2021-05-02 21:43:19,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:43:19,127 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:43:19,127 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1564546857] [2021-05-02 21:43:19,127 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 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 21:43:19,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 21:43:19,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 21:43:19,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-02 21:43:19,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:43:19,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:19,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:19,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:19,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:19,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:19,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:19,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:19,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:19,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:19,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:19,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:19,224 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 21:43:19,225 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:43:19,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923303656] [2021-05-02 21:43:19,225 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:43:19,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564546857] [2021-05-02 21:43:19,225 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564546857] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:43:19,225 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:43:19,225 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-05-02 21:43:19,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395307218] [2021-05-02 21:43:19,225 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 21:43:19,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:43:19,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 21:43:19,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 21:43:19,226 INFO L87 Difference]: Start difference. First operand 101 states and 133 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 21:43:19,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:43:19,261 INFO L93 Difference]: Finished difference Result 120 states and 157 transitions. [2021-05-02 21:43:19,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 21:43:19,261 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 36 [2021-05-02 21:43:19,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:43:19,262 INFO L225 Difference]: With dead ends: 120 [2021-05-02 21:43:19,262 INFO L226 Difference]: Without dead ends: 120 [2021-05-02 21:43:19,262 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 23.3ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-05-02 21:43:19,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-05-02 21:43:19,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2021-05-02 21:43:19,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 94 states have (on average 1.3297872340425532) internal successors, (125), 96 states have internal predecessors, (125), 17 states have call successors, (17), 9 states have call predecessors, (17), 8 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2021-05-02 21:43:19,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 157 transitions. [2021-05-02 21:43:19,266 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 157 transitions. Word has length 36 [2021-05-02 21:43:19,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:43:19,266 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 157 transitions. [2021-05-02 21:43:19,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 21:43:19,267 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 157 transitions. [2021-05-02 21:43:19,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-02 21:43:19,267 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:43:19,267 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:43:19,483 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:43:19,483 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:43:19,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:43:19,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1980238710, now seen corresponding path program 2 times [2021-05-02 21:43:19,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:43:19,484 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367279504] [2021-05-02 21:43:19,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:43:19,490 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:43:19,490 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [854707892] [2021-05-02 21:43:19,490 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 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 21:43:19,529 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 21:43:19,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 21:43:19,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 51 conjunts are in the unsatisfiable core [2021-05-02 21:43:19,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:43:19,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:19,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:19,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:19,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:19,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:19,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:32,267 WARN L205 SmtUtils]: Spent 10.57 s on a formula simplification that was a NOOP. DAG size: 26 [2021-05-02 21:43:45,851 WARN L205 SmtUtils]: Spent 13.55 s on a formula simplification. DAG size of input: 47 DAG size of output: 34 [2021-05-02 21:43:45,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:45,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:45,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:45,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:45,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:45,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:45,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:45,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:45,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:45,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:45,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:45,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:46,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:46,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:46,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:46,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:46,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:46,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:46,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:46,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:46,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:46,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:46,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:46,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:46,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:46,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:46,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:46,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:46,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:46,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:46,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:46,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:46,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:46,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:46,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:46,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:46,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:46,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:46,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:46,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:46,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:46,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:46,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:46,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:46,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:46,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:46,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:46,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:47,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:47,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:47,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:47,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:47,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:43:47,211 WARN L159 QuantifierPusher]: Ignoring assumption.