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 0.1.24-13a467a-m [2019-10-14 23:44:42,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:44:42,719 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:44:42,732 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:44:42,732 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:44:42,733 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:44:42,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:44:42,736 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:44:42,738 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:44:42,739 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:44:42,740 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:44:42,741 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:44:42,741 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:44:42,742 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:44:42,743 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:44:42,744 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:44:42,745 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:44:42,746 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:44:42,748 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:44:42,750 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:44:42,752 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:44:42,753 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:44:42,754 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:44:42,755 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:44:42,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:44:42,757 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:44:42,757 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:44:42,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:44:42,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:44:42,759 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:44:42,760 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:44:42,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:44:42,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:44:42,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:44:42,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:44:42,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:44:42,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:44:42,764 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:44:42,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:44:42,765 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:44:42,766 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:44:42,767 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 [2019-10-14 23:44:42,785 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:44:42,785 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:44:42,786 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:44:42,787 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:44:42,787 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:44:42,787 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:44:42,787 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:44:42,788 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:44:42,788 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:44:42,788 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:44:42,789 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:44:42,789 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:44:42,790 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:44:42,790 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:44:42,790 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:44:42,790 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:44:42,790 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:44:42,791 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:44:42,791 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:44:42,791 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:44:42,791 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:44:42,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:44:42,792 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:44:42,792 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:44:42,792 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:44:42,792 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:44:42,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:44:42,793 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:44:42,793 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:44:43,122 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:44:43,136 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:44:43,140 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:44:43,142 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:44:43,142 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:44:43,143 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2019-10-14 23:44:43,224 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d1cf796a/1f9a9c4553f546a3be3c4c7b86a52c62/FLAG5c1657091 [2019-10-14 23:44:43,939 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:44:43,940 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2019-10-14 23:44:43,970 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d1cf796a/1f9a9c4553f546a3be3c4c7b86a52c62/FLAG5c1657091 [2019-10-14 23:44:44,038 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d1cf796a/1f9a9c4553f546a3be3c4c7b86a52c62 [2019-10-14 23:44:44,048 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:44:44,050 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:44:44,051 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:44:44,051 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:44:44,055 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:44:44,056 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:44:44" (1/1) ... [2019-10-14 23:44:44,059 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b36d77d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:44, skipping insertion in model container [2019-10-14 23:44:44,059 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:44:44" (1/1) ... [2019-10-14 23:44:44,067 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:44:44,220 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:44:45,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:44:45,431 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:44:45,811 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:44:45,842 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:44:45,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:45 WrapperNode [2019-10-14 23:44:45,843 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:44:45,845 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:44:45,845 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:44:45,845 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:44:45,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:45" (1/1) ... [2019-10-14 23:44:45,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:45" (1/1) ... [2019-10-14 23:44:45,940 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:45" (1/1) ... [2019-10-14 23:44:45,940 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:45" (1/1) ... [2019-10-14 23:44:46,020 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:45" (1/1) ... [2019-10-14 23:44:46,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:45" (1/1) ... [2019-10-14 23:44:46,089 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:45" (1/1) ... [2019-10-14 23:44:46,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:44:46,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:44:46,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:44:46,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:44:46,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:45" (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 [2019-10-14 23:44:46,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:44:46,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:44:46,199 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:44:46,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:44:46,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-14 23:44:46,201 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-14 23:44:46,201 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-10-14 23:44:46,201 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-14 23:44:46,202 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-10-14 23:44:46,202 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-10-14 23:44:46,203 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-10-14 23:44:46,203 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-10-14 23:44:46,204 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-10-14 23:44:46,204 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-10-14 23:44:46,205 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-10-14 23:44:46,205 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:44:46,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:44:46,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:44:50,073 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:44:50,073 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-14 23:44:50,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:44:50 BoogieIcfgContainer [2019-10-14 23:44:50,075 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:44:50,077 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:44:50,077 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:44:50,080 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:44:50,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:44:44" (1/3) ... [2019-10-14 23:44:50,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9f9449a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:44:50, skipping insertion in model container [2019-10-14 23:44:50,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:45" (2/3) ... [2019-10-14 23:44:50,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9f9449a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:44:50, skipping insertion in model container [2019-10-14 23:44:50,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:44:50" (3/3) ... [2019-10-14 23:44:50,084 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2019-10-14 23:44:50,094 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:44:50,107 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-10-14 23:44:50,119 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-10-14 23:44:50,154 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:44:50,154 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:44:50,154 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:44:50,154 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:44:50,155 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:44:50,155 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:44:50,155 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:44:50,155 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:44:50,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1295 states. [2019-10-14 23:44:50,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-14 23:44:50,217 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:50,218 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] [2019-10-14 23:44:50,220 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:50,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:50,227 INFO L82 PathProgramCache]: Analyzing trace with hash 543541410, now seen corresponding path program 1 times [2019-10-14 23:44:50,235 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:50,235 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960489980] [2019-10-14 23:44:50,235 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:50,236 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:50,236 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:50,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:52,312 WARN L191 SmtUtils]: Spent 1.41 s on a formula simplification that was a NOOP. DAG size: 499 [2019-10-14 23:44:52,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:52,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:44:52,379 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960489980] [2019-10-14 23:44:52,380 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:52,380 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:44:52,381 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632074329] [2019-10-14 23:44:52,386 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:44:52,386 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:52,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:44:52,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:44:52,404 INFO L87 Difference]: Start difference. First operand 1295 states. Second operand 6 states. [2019-10-14 23:44:53,879 WARN L191 SmtUtils]: Spent 1.32 s on a formula simplification that was a NOOP. DAG size: 505 [2019-10-14 23:45:04,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:45:04,725 INFO L93 Difference]: Finished difference Result 2522 states and 4334 transitions. [2019-10-14 23:45:04,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:45:04,727 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2019-10-14 23:45:04,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:45:04,762 INFO L225 Difference]: With dead ends: 2522 [2019-10-14 23:45:04,762 INFO L226 Difference]: Without dead ends: 1594 [2019-10-14 23:45:04,772 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:45:04,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1594 states. [2019-10-14 23:45:04,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1594 to 1588. [2019-10-14 23:45:04,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1588 states. [2019-10-14 23:45:04,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 2070 transitions. [2019-10-14 23:45:04,967 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 2070 transitions. Word has length 56 [2019-10-14 23:45:04,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:45:04,968 INFO L462 AbstractCegarLoop]: Abstraction has 1588 states and 2070 transitions. [2019-10-14 23:45:04,968 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:45:04,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 2070 transitions. [2019-10-14 23:45:04,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-14 23:45:04,977 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:45:04,977 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] [2019-10-14 23:45:04,978 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:45:04,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:45:04,979 INFO L82 PathProgramCache]: Analyzing trace with hash 653011577, now seen corresponding path program 1 times [2019-10-14 23:45:04,979 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:45:04,980 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783511541] [2019-10-14 23:45:04,980 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:04,980 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:04,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:45:05,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:06,418 WARN L191 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 499 [2019-10-14 23:45:06,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:06,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:45:06,486 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783511541] [2019-10-14 23:45:06,487 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:45:06,487 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:45:06,487 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899018070] [2019-10-14 23:45:06,489 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:45:06,489 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:45:06,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:45:06,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:45:06,490 INFO L87 Difference]: Start difference. First operand 1588 states and 2070 transitions. Second operand 7 states. [2019-10-14 23:45:07,811 WARN L191 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 505 [2019-10-14 23:45:15,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:45:15,591 INFO L93 Difference]: Finished difference Result 3593 states and 4735 transitions. [2019-10-14 23:45:15,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:45:15,591 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2019-10-14 23:45:15,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:45:15,606 INFO L225 Difference]: With dead ends: 3593 [2019-10-14 23:45:15,607 INFO L226 Difference]: Without dead ends: 2603 [2019-10-14 23:45:15,614 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:45:15,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2603 states. [2019-10-14 23:45:15,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2603 to 2580. [2019-10-14 23:45:15,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2580 states. [2019-10-14 23:45:15,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2580 states to 2580 states and 3414 transitions. [2019-10-14 23:45:15,777 INFO L78 Accepts]: Start accepts. Automaton has 2580 states and 3414 transitions. Word has length 57 [2019-10-14 23:45:15,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:45:15,778 INFO L462 AbstractCegarLoop]: Abstraction has 2580 states and 3414 transitions. [2019-10-14 23:45:15,778 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:45:15,778 INFO L276 IsEmpty]: Start isEmpty. Operand 2580 states and 3414 transitions. [2019-10-14 23:45:15,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-14 23:45:15,782 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:45:15,782 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] [2019-10-14 23:45:15,782 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:45:15,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:45:15,783 INFO L82 PathProgramCache]: Analyzing trace with hash 2124615921, now seen corresponding path program 1 times [2019-10-14 23:45:15,783 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:45:15,783 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422467379] [2019-10-14 23:45:15,784 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:15,784 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:15,784 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:45:15,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:17,181 WARN L191 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 499 [2019-10-14 23:45:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:17,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:45:17,237 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422467379] [2019-10-14 23:45:17,237 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:45:17,237 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:45:17,238 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132784983] [2019-10-14 23:45:17,238 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:45:17,238 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:45:17,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:45:17,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:45:17,239 INFO L87 Difference]: Start difference. First operand 2580 states and 3414 transitions. Second operand 7 states. [2019-10-14 23:45:18,601 WARN L191 SmtUtils]: Spent 1.28 s on a formula simplification that was a NOOP. DAG size: 505