/usr/bin/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_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:13:12,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:13:12,606 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:13:12,624 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:13:12,625 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:13:12,627 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:13:12,629 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:13:12,635 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:13:12,637 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:13:12,638 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:13:12,639 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:13:12,640 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:13:12,640 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:13:12,641 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:13:12,642 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:13:12,643 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:13:12,644 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:13:12,645 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:13:12,646 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:13:12,648 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:13:12,649 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:13:12,650 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:13:12,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:13:12,652 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:13:12,654 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:13:12,657 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 22:13:12,657 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 22:13:12,658 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 22:13:12,659 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 22:13:12,660 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 22:13:12,660 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 22:13:12,661 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 22:13:12,661 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 22:13:12,661 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:13:12,662 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:13:12,663 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:13:12,663 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 [2019-11-06 22:13:12,676 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:13:12,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:13:12,678 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:13:12,678 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:13:12,678 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:13:12,679 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:13:12,679 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:13:12,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:13:12,679 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:13:12,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:13:12,679 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:13:12,680 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:13:12,680 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:13:12,680 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:13:12,680 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:13:12,680 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:13:12,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:13:12,681 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:13:12,681 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:13:12,681 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:13:12,681 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:13:12,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:13:12,682 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:13:12,682 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:13:12,682 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:13:12,682 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:13:12,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:13:12,683 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:13:12,683 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 22:13:12,985 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:13:13,006 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:13:13,012 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:13:13,013 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:13:13,013 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:13:13,014 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2019-11-06 22:13:13,083 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66cf15ca6/90cccfecf66f461783ddd3e4f718cb86/FLAG87ce2b181 [2019-11-06 22:13:13,606 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:13:13,606 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2019-11-06 22:13:13,625 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66cf15ca6/90cccfecf66f461783ddd3e4f718cb86/FLAG87ce2b181 [2019-11-06 22:13:13,860 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66cf15ca6/90cccfecf66f461783ddd3e4f718cb86 [2019-11-06 22:13:13,869 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:13:13,870 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:13:13,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:13:13,872 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:13:13,875 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:13:13,876 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:13:13" (1/1) ... [2019-11-06 22:13:13,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31ca527d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:13, skipping insertion in model container [2019-11-06 22:13:13,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:13:13" (1/1) ... [2019-11-06 22:13:13,888 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:13:13,964 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:13:14,665 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:13:14,684 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:13:15,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:13:15,125 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:13:15,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:15 WrapperNode [2019-11-06 22:13:15,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:13:15,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:13:15,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:13:15,126 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:13:15,137 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:15" (1/1) ... [2019-11-06 22:13:15,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:15" (1/1) ... [2019-11-06 22:13:15,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:15" (1/1) ... [2019-11-06 22:13:15,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:15" (1/1) ... [2019-11-06 22:13:15,184 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:15" (1/1) ... [2019-11-06 22:13:15,207 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:15" (1/1) ... [2019-11-06 22:13:15,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:15" (1/1) ... [2019-11-06 22:13:15,223 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:13:15,224 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:13:15,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:13:15,224 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:13:15,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:15" (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 [2019-11-06 22:13:15,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:13:15,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:13:15,321 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:13:15,321 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:13:15,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-11-06 22:13:15,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-11-06 22:13:15,323 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-11-06 22:13:15,323 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-06 22:13:15,323 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-11-06 22:13:15,323 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-11-06 22:13:15,323 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-11-06 22:13:15,324 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-11-06 22:13:15,324 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-11-06 22:13:15,325 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-11-06 22:13:15,325 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-11-06 22:13:15,326 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:13:15,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:13:15,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:13:16,903 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:13:16,903 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-06 22:13:16,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:13:16 BoogieIcfgContainer [2019-11-06 22:13:16,905 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:13:16,907 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:13:16,907 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:13:16,911 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:13:16,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:13:13" (1/3) ... [2019-11-06 22:13:16,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ef3825a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:13:16, skipping insertion in model container [2019-11-06 22:13:16,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:15" (2/3) ... [2019-11-06 22:13:16,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ef3825a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:13:16, skipping insertion in model container [2019-11-06 22:13:16,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:13:16" (3/3) ... [2019-11-06 22:13:16,920 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2019-11-06 22:13:16,930 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:13:16,958 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-11-06 22:13:16,976 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-11-06 22:13:17,022 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:13:17,023 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:13:17,023 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:13:17,023 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:13:17,023 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:13:17,023 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:13:17,023 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:13:17,024 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:13:17,072 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states. [2019-11-06 22:13:17,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-11-06 22:13:17,108 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:17,109 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:13:17,112 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:17,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:17,118 INFO L82 PathProgramCache]: Analyzing trace with hash -737000611, now seen corresponding path program 1 times [2019-11-06 22:13:17,127 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:17,128 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740805561] [2019-11-06 22:13:17,128 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:17,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:18,186 WARN L191 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-11-06 22:13:18,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:18,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:13:18,249 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740805561] [2019-11-06 22:13:18,250 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:18,250 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:13:18,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352953038] [2019-11-06 22:13:18,257 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:13:18,257 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:18,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:13:18,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:13:18,274 INFO L87 Difference]: Start difference. First operand 371 states. Second operand 4 states. [2019-11-06 22:13:18,627 WARN L191 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-11-06 22:13:21,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:21,051 INFO L93 Difference]: Finished difference Result 667 states and 1188 transitions. [2019-11-06 22:13:21,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:13:21,053 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2019-11-06 22:13:21,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:21,074 INFO L225 Difference]: With dead ends: 667 [2019-11-06 22:13:21,074 INFO L226 Difference]: Without dead ends: 520 [2019-11-06 22:13:21,078 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:13:21,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2019-11-06 22:13:21,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 518. [2019-11-06 22:13:21,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 518 states. [2019-11-06 22:13:21,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 755 transitions. [2019-11-06 22:13:21,180 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 755 transitions. Word has length 140 [2019-11-06 22:13:21,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:21,183 INFO L462 AbstractCegarLoop]: Abstraction has 518 states and 755 transitions. [2019-11-06 22:13:21,184 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:13:21,184 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 755 transitions. [2019-11-06 22:13:21,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-11-06 22:13:21,190 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:21,191 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:13:21,191 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:21,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:21,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1264797844, now seen corresponding path program 1 times [2019-11-06 22:13:21,193 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:21,193 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437774074] [2019-11-06 22:13:21,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:21,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:21,645 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-11-06 22:13:21,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:21,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:13:21,688 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437774074] [2019-11-06 22:13:21,688 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:21,688 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:13:21,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037380656] [2019-11-06 22:13:21,690 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:13:21,691 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:21,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:13:21,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:13:21,691 INFO L87 Difference]: Start difference. First operand 518 states and 755 transitions. Second operand 4 states. [2019-11-06 22:13:22,012 WARN L191 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-11-06 22:13:23,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:23,876 INFO L93 Difference]: Finished difference Result 1029 states and 1554 transitions. [2019-11-06 22:13:23,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:13:23,876 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2019-11-06 22:13:23,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:23,884 INFO L225 Difference]: With dead ends: 1029 [2019-11-06 22:13:23,884 INFO L226 Difference]: Without dead ends: 824 [2019-11-06 22:13:23,887 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:13:23,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2019-11-06 22:13:23,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 822. [2019-11-06 22:13:23,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 822 states. [2019-11-06 22:13:23,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 1219 transitions. [2019-11-06 22:13:23,938 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 1219 transitions. Word has length 140 [2019-11-06 22:13:23,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:23,938 INFO L462 AbstractCegarLoop]: Abstraction has 822 states and 1219 transitions. [2019-11-06 22:13:23,939 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:13:23,939 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 1219 transitions. [2019-11-06 22:13:23,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-11-06 22:13:23,941 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:23,942 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:13:23,942 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:23,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:23,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1075415587, now seen corresponding path program 1 times [2019-11-06 22:13:23,943 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:23,943 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504568482] [2019-11-06 22:13:23,943 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:23,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:24,429 WARN L191 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-11-06 22:13:24,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:24,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:13:24,505 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504568482] [2019-11-06 22:13:24,505 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:24,505 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:13:24,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855494779] [2019-11-06 22:13:24,506 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:13:24,506 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:24,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:13:24,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:13:24,507 INFO L87 Difference]: Start difference. First operand 822 states and 1219 transitions. Second operand 4 states. [2019-11-06 22:13:24,868 WARN L191 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-11-06 22:13:26,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:26,700 INFO L93 Difference]: Finished difference Result 1781 states and 2727 transitions. [2019-11-06 22:13:26,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:13:26,701 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2019-11-06 22:13:26,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:26,709 INFO L225 Difference]: With dead ends: 1781 [2019-11-06 22:13:26,710 INFO L226 Difference]: Without dead ends: 1436 [2019-11-06 22:13:26,712 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:13:26,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2019-11-06 22:13:26,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1434. [2019-11-06 22:13:26,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1434 states. [2019-11-06 22:13:26,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1434 states to 1434 states and 2151 transitions. [2019-11-06 22:13:26,769 INFO L78 Accepts]: Start accepts. Automaton has 1434 states and 2151 transitions. Word has length 140 [2019-11-06 22:13:26,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:26,769 INFO L462 AbstractCegarLoop]: Abstraction has 1434 states and 2151 transitions. [2019-11-06 22:13:26,770 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:13:26,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1434 states and 2151 transitions. [2019-11-06 22:13:26,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-11-06 22:13:26,773 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:26,774 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:13:26,774 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:26,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:26,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1075754211, now seen corresponding path program 1 times [2019-11-06 22:13:26,775 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:26,775 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812418477] [2019-11-06 22:13:26,775 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:26,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:27,414 WARN L191 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-11-06 22:13:27,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:27,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:13:27,461 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812418477] [2019-11-06 22:13:27,461 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:27,462 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:13:27,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488128728] [2019-11-06 22:13:27,462 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:13:27,463 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:27,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:13:27,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:13:27,463 INFO L87 Difference]: Start difference. First operand 1434 states and 2151 transitions. Second operand 5 states. [2019-11-06 22:13:30,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:30,348 INFO L93 Difference]: Finished difference Result 4221 states and 6322 transitions. [2019-11-06 22:13:30,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:13:30,349 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2019-11-06 22:13:30,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:30,363 INFO L225 Difference]: With dead ends: 4221 [2019-11-06 22:13:30,363 INFO L226 Difference]: Without dead ends: 2800 [2019-11-06 22:13:30,367 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:13:30,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2800 states. [2019-11-06 22:13:30,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2800 to 2760. [2019-11-06 22:13:30,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2760 states. [2019-11-06 22:13:30,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2760 states to 2760 states and 4117 transitions. [2019-11-06 22:13:30,502 INFO L78 Accepts]: Start accepts. Automaton has 2760 states and 4117 transitions. Word has length 140 [2019-11-06 22:13:30,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:30,503 INFO L462 AbstractCegarLoop]: Abstraction has 2760 states and 4117 transitions. [2019-11-06 22:13:30,503 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:13:30,503 INFO L276 IsEmpty]: Start isEmpty. Operand 2760 states and 4117 transitions. [2019-11-06 22:13:30,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-11-06 22:13:30,508 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:30,508 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:13:30,509 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:30,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:30,509 INFO L82 PathProgramCache]: Analyzing trace with hash -127121487, now seen corresponding path program 1 times [2019-11-06 22:13:30,510 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:30,510 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952416043] [2019-11-06 22:13:30,510 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:30,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:30,822 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-11-06 22:13:30,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:30,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:13:30,858 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952416043] [2019-11-06 22:13:30,858 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:30,858 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:13:30,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214998851] [2019-11-06 22:13:30,859 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:13:30,859 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:30,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:13:30,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:13:30,860 INFO L87 Difference]: Start difference. First operand 2760 states and 4117 transitions. Second operand 4 states. [2019-11-06 22:13:32,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:32,729 INFO L93 Difference]: Finished difference Result 8234 states and 12281 transitions. [2019-11-06 22:13:32,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:13:32,730 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2019-11-06 22:13:32,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:32,757 INFO L225 Difference]: With dead ends: 8234 [2019-11-06 22:13:32,757 INFO L226 Difference]: Without dead ends: 5506 [2019-11-06 22:13:32,764 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:13:32,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5506 states. [2019-11-06 22:13:32,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5506 to 2762. [2019-11-06 22:13:32,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2762 states. [2019-11-06 22:13:32,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2762 states to 2762 states and 4119 transitions. [2019-11-06 22:13:32,912 INFO L78 Accepts]: Start accepts. Automaton has 2762 states and 4119 transitions. Word has length 141 [2019-11-06 22:13:32,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:32,913 INFO L462 AbstractCegarLoop]: Abstraction has 2762 states and 4119 transitions. [2019-11-06 22:13:32,914 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:13:32,914 INFO L276 IsEmpty]: Start isEmpty. Operand 2762 states and 4119 transitions. [2019-11-06 22:13:32,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-11-06 22:13:32,920 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:32,920 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:13:32,921 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:32,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:32,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1322555170, now seen corresponding path program 1 times [2019-11-06 22:13:32,921 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:32,923 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252364972] [2019-11-06 22:13:32,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:33,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:33,370 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-11-06 22:13:33,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:33,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:13:33,413 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252364972] [2019-11-06 22:13:33,414 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:33,415 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:13:33,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547016019] [2019-11-06 22:13:33,415 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:13:33,415 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:33,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:13:33,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:13:33,416 INFO L87 Difference]: Start difference. First operand 2762 states and 4119 transitions. Second operand 5 states. [2019-11-06 22:13:35,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:35,052 INFO L93 Difference]: Finished difference Result 5510 states and 8220 transitions. [2019-11-06 22:13:35,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:13:35,052 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2019-11-06 22:13:35,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:35,071 INFO L225 Difference]: With dead ends: 5510 [2019-11-06 22:13:35,071 INFO L226 Difference]: Without dead ends: 2760 [2019-11-06 22:13:35,077 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:13:35,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2760 states. [2019-11-06 22:13:35,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2760 to 2760. [2019-11-06 22:13:35,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2760 states. [2019-11-06 22:13:35,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2760 states to 2760 states and 4115 transitions. [2019-11-06 22:13:35,183 INFO L78 Accepts]: Start accepts. Automaton has 2760 states and 4115 transitions. Word has length 142 [2019-11-06 22:13:35,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:35,183 INFO L462 AbstractCegarLoop]: Abstraction has 2760 states and 4115 transitions. [2019-11-06 22:13:35,183 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:13:35,183 INFO L276 IsEmpty]: Start isEmpty. Operand 2760 states and 4115 transitions. [2019-11-06 22:13:35,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-11-06 22:13:35,188 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:35,188 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:13:35,188 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:35,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:35,189 INFO L82 PathProgramCache]: Analyzing trace with hash -82288669, now seen corresponding path program 1 times [2019-11-06 22:13:35,189 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:35,189 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171475793] [2019-11-06 22:13:35,189 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:35,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:35,536 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-11-06 22:13:35,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:35,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:13:35,598 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171475793] [2019-11-06 22:13:35,599 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:35,599 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:13:35,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151781304] [2019-11-06 22:13:35,600 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:13:35,600 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:35,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:13:35,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:13:35,601 INFO L87 Difference]: Start difference. First operand 2760 states and 4115 transitions. Second operand 4 states. [2019-11-06 22:13:38,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:38,400 INFO L93 Difference]: Finished difference Result 6674 states and 9953 transitions. [2019-11-06 22:13:38,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:13:38,400 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2019-11-06 22:13:38,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:38,418 INFO L225 Difference]: With dead ends: 6674 [2019-11-06 22:13:38,418 INFO L226 Difference]: Without dead ends: 4094 [2019-11-06 22:13:38,425 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:13:38,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4094 states. [2019-11-06 22:13:38,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4094 to 4054. [2019-11-06 22:13:38,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4054 states. [2019-11-06 22:13:38,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4054 states to 4054 states and 5963 transitions. [2019-11-06 22:13:38,634 INFO L78 Accepts]: Start accepts. Automaton has 4054 states and 5963 transitions. Word has length 142 [2019-11-06 22:13:38,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:38,635 INFO L462 AbstractCegarLoop]: Abstraction has 4054 states and 5963 transitions. [2019-11-06 22:13:38,635 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:13:38,635 INFO L276 IsEmpty]: Start isEmpty. Operand 4054 states and 5963 transitions. [2019-11-06 22:13:38,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-11-06 22:13:38,643 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:38,643 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:13:38,643 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:38,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:38,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1177772960, now seen corresponding path program 1 times [2019-11-06 22:13:38,644 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:38,644 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774428871] [2019-11-06 22:13:38,644 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:38,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:39,113 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-11-06 22:13:39,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:39,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:13:39,173 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774428871] [2019-11-06 22:13:39,173 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:39,174 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 22:13:39,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391956223] [2019-11-06 22:13:39,174 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 22:13:39,175 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:39,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 22:13:39,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-06 22:13:39,175 INFO L87 Difference]: Start difference. First operand 4054 states and 5963 transitions. Second operand 9 states. [2019-11-06 22:13:39,485 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2019-11-06 22:13:41,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:41,855 INFO L93 Difference]: Finished difference Result 13639 states and 20990 transitions. [2019-11-06 22:13:41,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-06 22:13:41,856 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 145 [2019-11-06 22:13:41,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:41,896 INFO L225 Difference]: With dead ends: 13639 [2019-11-06 22:13:41,897 INFO L226 Difference]: Without dead ends: 9790 [2019-11-06 22:13:41,909 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2019-11-06 22:13:41,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9790 states. [2019-11-06 22:13:42,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9790 to 5376. [2019-11-06 22:13:42,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5376 states. [2019-11-06 22:13:42,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5376 states to 5376 states and 7951 transitions. [2019-11-06 22:13:42,274 INFO L78 Accepts]: Start accepts. Automaton has 5376 states and 7951 transitions. Word has length 145 [2019-11-06 22:13:42,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:42,274 INFO L462 AbstractCegarLoop]: Abstraction has 5376 states and 7951 transitions. [2019-11-06 22:13:42,274 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 22:13:42,274 INFO L276 IsEmpty]: Start isEmpty. Operand 5376 states and 7951 transitions. [2019-11-06 22:13:42,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-11-06 22:13:42,281 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:42,281 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:13:42,281 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:42,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:42,282 INFO L82 PathProgramCache]: Analyzing trace with hash -142350002, now seen corresponding path program 1 times [2019-11-06 22:13:42,282 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:42,282 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917157930] [2019-11-06 22:13:42,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:42,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:42,663 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-11-06 22:13:42,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:42,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:13:42,707 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917157930] [2019-11-06 22:13:42,708 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:42,708 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:13:42,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476664275] [2019-11-06 22:13:42,708 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:13:42,709 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:42,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:13:42,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:13:42,709 INFO L87 Difference]: Start difference. First operand 5376 states and 7951 transitions. Second operand 5 states. [2019-11-06 22:13:45,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:45,419 INFO L93 Difference]: Finished difference Result 14463 states and 21402 transitions. [2019-11-06 22:13:45,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:13:45,420 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2019-11-06 22:13:45,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:45,441 INFO L225 Difference]: With dead ends: 14463 [2019-11-06 22:13:45,441 INFO L226 Difference]: Without dead ends: 9110 [2019-11-06 22:13:45,458 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:13:45,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9110 states. [2019-11-06 22:13:45,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9110 to 9080. [2019-11-06 22:13:45,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9080 states. [2019-11-06 22:13:45,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9080 states to 9080 states and 13336 transitions. [2019-11-06 22:13:45,948 INFO L78 Accepts]: Start accepts. Automaton has 9080 states and 13336 transitions. Word has length 145 [2019-11-06 22:13:45,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:45,948 INFO L462 AbstractCegarLoop]: Abstraction has 9080 states and 13336 transitions. [2019-11-06 22:13:45,948 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:13:45,949 INFO L276 IsEmpty]: Start isEmpty. Operand 9080 states and 13336 transitions. [2019-11-06 22:13:45,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-11-06 22:13:45,958 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:45,958 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:13:45,959 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:45,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:45,959 INFO L82 PathProgramCache]: Analyzing trace with hash -140462378, now seen corresponding path program 1 times [2019-11-06 22:13:45,959 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:45,960 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010682332] [2019-11-06 22:13:45,960 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:45,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:46,248 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-11-06 22:13:46,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:46,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:13:46,296 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010682332] [2019-11-06 22:13:46,296 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:46,296 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:13:46,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407423897] [2019-11-06 22:13:46,297 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:13:46,297 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:46,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:13:46,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:13:46,297 INFO L87 Difference]: Start difference. First operand 9080 states and 13336 transitions. Second operand 4 states. [2019-11-06 22:13:48,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:48,939 INFO L93 Difference]: Finished difference Result 24470 states and 36012 transitions. [2019-11-06 22:13:48,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:13:48,940 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2019-11-06 22:13:48,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:48,981 INFO L225 Difference]: With dead ends: 24470 [2019-11-06 22:13:48,982 INFO L226 Difference]: Without dead ends: 15751 [2019-11-06 22:13:48,999 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:13:49,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15751 states.