java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:45:42,728 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:45:42,731 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:45:42,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:45:42,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:45:42,744 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:45:42,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:45:42,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:45:42,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:45:42,750 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:45:42,751 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:45:42,752 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:45:42,752 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:45:42,753 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:45:42,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:45:42,758 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:45:42,760 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:45:42,761 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:45:42,765 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:45:42,770 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:45:42,771 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:45:42,772 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:45:42,777 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:45:42,778 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:45:42,780 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:45:42,780 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:45:42,781 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:45:42,781 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:45:42,782 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:45:42,785 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:45:42,785 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:45:42,786 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:45:42,787 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:45:42,787 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:45:42,789 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:45:42,789 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:45:42,792 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:45:42,792 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:45:42,793 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:45:42,794 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:45:42,795 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:45:42,796 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 19:45:42,810 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:45:42,810 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:45:42,811 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:45:42,812 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:45:42,812 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:45:42,812 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:45:42,812 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:45:42,812 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:45:42,813 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:45:42,813 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:45:42,813 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:45:42,813 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:45:42,813 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:45:42,814 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:45:42,814 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:45:42,814 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:45:42,814 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:45:42,814 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:45:42,815 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:45:42,815 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:45:42,815 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:45:42,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:45:42,816 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:45:42,816 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:45:42,816 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:45:42,816 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:45:42,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:45:42,817 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:45:42,817 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:45:43,125 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:45:43,142 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:45:43,146 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:45:43,147 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:45:43,147 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:45:43,148 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2019-10-13 19:45:43,222 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ea25550d/936b9c0dc65a4dc3af76a19747c1b4ed/FLAG4f0d88ca7 [2019-10-13 19:45:43,953 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:45:43,955 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2019-10-13 19:45:43,989 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ea25550d/936b9c0dc65a4dc3af76a19747c1b4ed/FLAG4f0d88ca7 [2019-10-13 19:45:44,038 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ea25550d/936b9c0dc65a4dc3af76a19747c1b4ed [2019-10-13 19:45:44,046 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:45:44,047 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:45:44,050 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:45:44,050 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:45:44,054 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:45:44,055 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:45:44" (1/1) ... [2019-10-13 19:45:44,057 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bd64945 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:44, skipping insertion in model container [2019-10-13 19:45:44,058 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:45:44" (1/1) ... [2019-10-13 19:45:44,064 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:45:44,242 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:45:45,396 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:45:45,421 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:45:45,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:45:45,824 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:45:45,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:45 WrapperNode [2019-10-13 19:45:45,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:45:45,826 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:45:45,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:45:45,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:45:45,846 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:45" (1/1) ... [2019-10-13 19:45:45,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:45" (1/1) ... [2019-10-13 19:45:45,915 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:45" (1/1) ... [2019-10-13 19:45:45,916 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:45" (1/1) ... [2019-10-13 19:45:46,001 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:45" (1/1) ... [2019-10-13 19:45:46,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:45" (1/1) ... [2019-10-13 19:45:46,071 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:45" (1/1) ... [2019-10-13 19:45:46,099 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:45:46,100 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:45:46,100 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:45:46,100 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:45:46,101 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:45" (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 [2019-10-13 19:45:46,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:45:46,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:45:46,172 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:45:46,173 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:45:46,173 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-13 19:45:46,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-13 19:45:46,174 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-10-13 19:45:46,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 19:45:46,174 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-10-13 19:45:46,175 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-10-13 19:45:46,175 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-10-13 19:45:46,175 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-10-13 19:45:46,176 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-10-13 19:45:46,176 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-10-13 19:45:46,177 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-10-13 19:45:46,177 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:45:46,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:45:46,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:45:49,495 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:45:49,496 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-13 19:45:49,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:45:49 BoogieIcfgContainer [2019-10-13 19:45:49,498 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:45:49,500 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:45:49,500 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:45:49,503 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:45:49,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:45:44" (1/3) ... [2019-10-13 19:45:49,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36904263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:45:49, skipping insertion in model container [2019-10-13 19:45:49,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:45" (2/3) ... [2019-10-13 19:45:49,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36904263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:45:49, skipping insertion in model container [2019-10-13 19:45:49,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:45:49" (3/3) ... [2019-10-13 19:45:49,507 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2019-10-13 19:45:49,517 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:45:49,527 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-10-13 19:45:49,538 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-10-13 19:45:49,572 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:45:49,572 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:45:49,573 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:45:49,573 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:45:49,573 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:45:49,573 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:45:49,573 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:45:49,573 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:45:49,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1295 states. [2019-10-13 19:45:49,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-13 19:45:49,646 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:49,647 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:45:49,650 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:49,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:49,655 INFO L82 PathProgramCache]: Analyzing trace with hash 543541410, now seen corresponding path program 1 times [2019-10-13 19:45:49,662 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:49,662 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687471032] [2019-10-13 19:45:49,662 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:49,662 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:49,663 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:50,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:51,633 WARN L191 SmtUtils]: Spent 1.30 s on a formula simplification that was a NOOP. DAG size: 499 [2019-10-13 19:45:51,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:51,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:45:51,707 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687471032] [2019-10-13 19:45:51,708 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:51,708 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:45:51,708 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385043853] [2019-10-13 19:45:51,713 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:45:51,714 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:51,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:45:51,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:45:51,731 INFO L87 Difference]: Start difference. First operand 1295 states. Second operand 6 states. [2019-10-13 19:45:53,252 WARN L191 SmtUtils]: Spent 1.39 s on a formula simplification that was a NOOP. DAG size: 505 [2019-10-13 19:46:04,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:04,360 INFO L93 Difference]: Finished difference Result 2522 states and 4334 transitions. [2019-10-13 19:46:04,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:46:04,363 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2019-10-13 19:46:04,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:04,395 INFO L225 Difference]: With dead ends: 2522 [2019-10-13 19:46:04,396 INFO L226 Difference]: Without dead ends: 1594 [2019-10-13 19:46:04,406 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:46:04,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1594 states. [2019-10-13 19:46:04,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1594 to 1588. [2019-10-13 19:46:04,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1588 states. [2019-10-13 19:46:04,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 2070 transitions. [2019-10-13 19:46:04,579 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 2070 transitions. Word has length 56 [2019-10-13 19:46:04,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:04,580 INFO L462 AbstractCegarLoop]: Abstraction has 1588 states and 2070 transitions. [2019-10-13 19:46:04,580 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:46:04,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 2070 transitions. [2019-10-13 19:46:04,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-13 19:46:04,589 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:04,590 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:46:04,590 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:04,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:04,591 INFO L82 PathProgramCache]: Analyzing trace with hash 653011577, now seen corresponding path program 1 times [2019-10-13 19:46:04,592 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:04,592 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497119339] [2019-10-13 19:46:04,592 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:04,592 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:04,593 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:06,172 WARN L191 SmtUtils]: Spent 1.31 s on a formula simplification that was a NOOP. DAG size: 499 [2019-10-13 19:46:06,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:06,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:06,232 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497119339] [2019-10-13 19:46:06,233 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:06,233 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 19:46:06,233 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048518127] [2019-10-13 19:46:06,235 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:46:06,235 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:06,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:46:06,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:46:06,236 INFO L87 Difference]: Start difference. First operand 1588 states and 2070 transitions. Second operand 7 states. [2019-10-13 19:46:07,705 WARN L191 SmtUtils]: Spent 1.39 s on a formula simplification that was a NOOP. DAG size: 505 [2019-10-13 19:46:15,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:15,830 INFO L93 Difference]: Finished difference Result 3593 states and 4735 transitions. [2019-10-13 19:46:15,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:46:15,831 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2019-10-13 19:46:15,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:15,844 INFO L225 Difference]: With dead ends: 3593 [2019-10-13 19:46:15,844 INFO L226 Difference]: Without dead ends: 2603 [2019-10-13 19:46:15,848 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:46:15,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2603 states. [2019-10-13 19:46:15,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2603 to 2580. [2019-10-13 19:46:15,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2580 states. [2019-10-13 19:46:15,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2580 states to 2580 states and 3414 transitions. [2019-10-13 19:46:15,952 INFO L78 Accepts]: Start accepts. Automaton has 2580 states and 3414 transitions. Word has length 57 [2019-10-13 19:46:15,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:15,953 INFO L462 AbstractCegarLoop]: Abstraction has 2580 states and 3414 transitions. [2019-10-13 19:46:15,953 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:46:15,953 INFO L276 IsEmpty]: Start isEmpty. Operand 2580 states and 3414 transitions. [2019-10-13 19:46:15,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-13 19:46:15,957 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:15,957 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:46:15,958 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:15,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:15,958 INFO L82 PathProgramCache]: Analyzing trace with hash 2124615921, now seen corresponding path program 1 times [2019-10-13 19:46:15,959 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:15,959 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222644740] [2019-10-13 19:46:15,959 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:15,959 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:15,959 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:16,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:17,420 WARN L191 SmtUtils]: Spent 1.29 s on a formula simplification that was a NOOP. DAG size: 499 [2019-10-13 19:46:17,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:17,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:17,483 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222644740] [2019-10-13 19:46:17,484 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:17,493 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 19:46:17,493 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140719772] [2019-10-13 19:46:17,496 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:46:17,496 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:17,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:46:17,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:46:17,497 INFO L87 Difference]: Start difference. First operand 2580 states and 3414 transitions. Second operand 7 states. [2019-10-13 19:46:18,822 WARN L191 SmtUtils]: Spent 1.24 s on a formula simplification that was a NOOP. DAG size: 505