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.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:44:12,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:44:12,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:44:12,660 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:44:12,660 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:44:12,661 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:44:12,663 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:44:12,665 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:44:12,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:44:12,668 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:44:12,669 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:44:12,670 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:44:12,670 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:44:12,671 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:44:12,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:44:12,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:44:12,674 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:44:12,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:44:12,677 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:44:12,679 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:44:12,681 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:44:12,682 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:44:12,683 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:44:12,684 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:44:12,686 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:44:12,690 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:44:12,690 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:44:12,691 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:44:12,692 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:44:12,693 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:44:12,693 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:44:12,694 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:44:12,694 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:44:12,694 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:44:12,695 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:44:12,696 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:44:12,697 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 23:44:12,723 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:44:12,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:44:12,726 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:44:12,726 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:44:12,726 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:44:12,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:44:12,727 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:44:12,728 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:44:12,728 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:44:12,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:44:12,729 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:44:12,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:44:12,730 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:44:12,730 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:44:12,730 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:44:12,730 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:44:12,731 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:44:12,731 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:44:12,731 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:44:12,731 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:44:12,732 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:44:12,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:44:12,732 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:44:12,733 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:44:12,733 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:44:12,733 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:44:12,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:44:12,734 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:44:12,734 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:44:13,032 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:44:13,046 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:44:13,049 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:44:13,051 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:44:13,051 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:44:13,052 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2019-10-14 23:44:13,127 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d33078105/0e7f943c7afb400ea0600e89f5d2331f/FLAG0ceac74b9 [2019-10-14 23:44:13,674 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:44:13,675 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2019-10-14 23:44:13,700 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d33078105/0e7f943c7afb400ea0600e89f5d2331f/FLAG0ceac74b9 [2019-10-14 23:44:13,991 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d33078105/0e7f943c7afb400ea0600e89f5d2331f [2019-10-14 23:44:14,001 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:44:14,003 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:44:14,004 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:44:14,004 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:44:14,007 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:44:14,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:44:13" (1/1) ... [2019-10-14 23:44:14,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31e252d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:14, skipping insertion in model container [2019-10-14 23:44:14,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:44:13" (1/1) ... [2019-10-14 23:44:14,019 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:44:14,095 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:44:14,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:44:14,730 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:44:14,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:44:14,917 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:44:14,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:14 WrapperNode [2019-10-14 23:44:14,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:44:14,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:44:14,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:44:14,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:44:14,931 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:14" (1/1) ... [2019-10-14 23:44:14,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:14" (1/1) ... [2019-10-14 23:44:14,952 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:14" (1/1) ... [2019-10-14 23:44:14,952 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:14" (1/1) ... [2019-10-14 23:44:14,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:14" (1/1) ... [2019-10-14 23:44:15,015 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:14" (1/1) ... [2019-10-14 23:44:15,023 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:14" (1/1) ... [2019-10-14 23:44:15,045 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:44:15,045 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:44:15,046 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:44:15,046 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:44:15,047 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:14" (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 23:44:15,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:44:15,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:44:15,116 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:44:15,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:44:15,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-14 23:44:15,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-10-14 23:44:15,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-14 23:44:15,118 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-10-14 23:44:15,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-14 23:44:15,118 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-10-14 23:44:15,118 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-10-14 23:44:15,119 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-10-14 23:44:15,119 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-10-14 23:44:15,119 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-10-14 23:44:15,121 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-10-14 23:44:15,121 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-10-14 23:44:15,123 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:44:15,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:44:15,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:44:16,572 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:44:16,572 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-14 23:44:16,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:44:16 BoogieIcfgContainer [2019-10-14 23:44:16,574 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:44:16,575 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:44:16,575 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:44:16,578 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:44:16,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:44:13" (1/3) ... [2019-10-14 23:44:16,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4410df6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:44:16, skipping insertion in model container [2019-10-14 23:44:16,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:14" (2/3) ... [2019-10-14 23:44:16,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4410df6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:44:16, skipping insertion in model container [2019-10-14 23:44:16,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:44:16" (3/3) ... [2019-10-14 23:44:16,582 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2019-10-14 23:44:16,593 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:44:16,601 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:44:16,613 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:44:16,643 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:44:16,643 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:44:16,643 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:44:16,643 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:44:16,643 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:44:16,643 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:44:16,643 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:44:16,643 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:44:16,674 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states. [2019-10-14 23:44:16,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-10-14 23:44:16,691 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:16,692 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:44:16,693 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:16,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:16,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1464169863, now seen corresponding path program 1 times [2019-10-14 23:44:16,705 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:16,706 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447975777] [2019-10-14 23:44:16,706 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:16,706 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:16,706 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:17,642 WARN L191 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-14 23:44:17,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:17,723 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 23:44:17,724 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447975777] [2019-10-14 23:44:17,725 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:17,725 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:44:17,726 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133304405] [2019-10-14 23:44:17,732 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:44:17,733 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:17,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:44:17,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:44:17,750 INFO L87 Difference]: Start difference. First operand 306 states. Second operand 4 states. [2019-10-14 23:44:18,092 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2019-10-14 23:44:19,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:19,692 INFO L93 Difference]: Finished difference Result 619 states and 1086 transitions. [2019-10-14 23:44:19,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:44:19,694 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2019-10-14 23:44:19,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:19,713 INFO L225 Difference]: With dead ends: 619 [2019-10-14 23:44:19,714 INFO L226 Difference]: Without dead ends: 492 [2019-10-14 23:44:19,719 INFO L600 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 [2019-10-14 23:44:19,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2019-10-14 23:44:19,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 490. [2019-10-14 23:44:19,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 490 states. [2019-10-14 23:44:19,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 727 transitions. [2019-10-14 23:44:19,827 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 727 transitions. Word has length 147 [2019-10-14 23:44:19,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:19,830 INFO L462 AbstractCegarLoop]: Abstraction has 490 states and 727 transitions. [2019-10-14 23:44:19,830 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:44:19,831 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 727 transitions. [2019-10-14 23:44:19,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-10-14 23:44:19,842 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:19,842 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:44:19,843 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:19,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:19,844 INFO L82 PathProgramCache]: Analyzing trace with hash 558735771, now seen corresponding path program 1 times [2019-10-14 23:44:19,844 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:19,845 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756939992] [2019-10-14 23:44:19,845 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:19,845 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:19,845 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:19,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:20,290 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-14 23:44:20,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:20,367 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 23:44:20,368 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756939992] [2019-10-14 23:44:20,368 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:20,369 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:44:20,369 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547068731] [2019-10-14 23:44:20,371 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:44:20,371 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:20,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:44:20,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:44:20,373 INFO L87 Difference]: Start difference. First operand 490 states and 727 transitions. Second operand 4 states. [2019-10-14 23:44:20,677 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2019-10-14 23:44:21,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:21,897 INFO L93 Difference]: Finished difference Result 1032 states and 1578 transitions. [2019-10-14 23:44:21,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:44:21,898 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2019-10-14 23:44:21,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:21,905 INFO L225 Difference]: With dead ends: 1032 [2019-10-14 23:44:21,905 INFO L226 Difference]: Without dead ends: 840 [2019-10-14 23:44:21,907 INFO L600 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 [2019-10-14 23:44:21,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2019-10-14 23:44:21,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 838. [2019-10-14 23:44:21,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 838 states. [2019-10-14 23:44:21,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1255 transitions. [2019-10-14 23:44:21,957 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1255 transitions. Word has length 147 [2019-10-14 23:44:21,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:21,958 INFO L462 AbstractCegarLoop]: Abstraction has 838 states and 1255 transitions. [2019-10-14 23:44:21,958 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:44:21,958 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1255 transitions. [2019-10-14 23:44:21,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-10-14 23:44:21,961 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:21,961 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:44:21,961 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:21,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:21,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1754446721, now seen corresponding path program 1 times [2019-10-14 23:44:21,962 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:21,963 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584375171] [2019-10-14 23:44:21,963 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:21,963 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:21,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:22,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:22,427 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-14 23:44:22,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:22,474 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 23:44:22,474 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584375171] [2019-10-14 23:44:22,474 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:22,475 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:44:22,475 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462806868] [2019-10-14 23:44:22,476 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:44:22,476 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:22,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:44:22,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:44:22,477 INFO L87 Difference]: Start difference. First operand 838 states and 1255 transitions. Second operand 5 states. [2019-10-14 23:44:24,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:24,870 INFO L93 Difference]: Finished difference Result 2461 states and 3682 transitions. [2019-10-14 23:44:24,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:44:24,870 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2019-10-14 23:44:24,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:24,880 INFO L225 Difference]: With dead ends: 2461 [2019-10-14 23:44:24,880 INFO L226 Difference]: Without dead ends: 1636 [2019-10-14 23:44:24,884 INFO L600 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 [2019-10-14 23:44:24,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2019-10-14 23:44:24,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1634. [2019-10-14 23:44:24,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1634 states. [2019-10-14 23:44:24,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 2428 transitions. [2019-10-14 23:44:24,961 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 2428 transitions. Word has length 147 [2019-10-14 23:44:24,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:24,962 INFO L462 AbstractCegarLoop]: Abstraction has 1634 states and 2428 transitions. [2019-10-14 23:44:24,962 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:44:24,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 2428 transitions. [2019-10-14 23:44:24,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-14 23:44:24,966 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:24,966 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:44:24,967 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:24,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:24,967 INFO L82 PathProgramCache]: Analyzing trace with hash 818598479, now seen corresponding path program 1 times [2019-10-14 23:44:24,968 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:24,968 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093760284] [2019-10-14 23:44:24,968 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:24,968 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:24,969 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:24,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:25,221 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-14 23:44:25,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:25,254 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 23:44:25,254 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093760284] [2019-10-14 23:44:25,254 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:25,254 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:44:25,255 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356953036] [2019-10-14 23:44:25,255 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:44:25,255 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:25,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:44:25,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:44:25,256 INFO L87 Difference]: Start difference. First operand 1634 states and 2428 transitions. Second operand 4 states. [2019-10-14 23:44:26,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:26,740 INFO L93 Difference]: Finished difference Result 4856 states and 7214 transitions. [2019-10-14 23:44:26,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:44:26,741 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2019-10-14 23:44:26,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:26,767 INFO L225 Difference]: With dead ends: 4856 [2019-10-14 23:44:26,768 INFO L226 Difference]: Without dead ends: 3254 [2019-10-14 23:44:26,775 INFO L600 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 [2019-10-14 23:44:26,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3254 states. [2019-10-14 23:44:26,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3254 to 1636. [2019-10-14 23:44:26,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1636 states. [2019-10-14 23:44:26,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 2430 transitions. [2019-10-14 23:44:26,929 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 2430 transitions. Word has length 148 [2019-10-14 23:44:26,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:26,930 INFO L462 AbstractCegarLoop]: Abstraction has 1636 states and 2430 transitions. [2019-10-14 23:44:26,930 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:44:26,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 2430 transitions. [2019-10-14 23:44:26,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-14 23:44:26,934 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:26,934 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:44:26,934 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:26,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:26,935 INFO L82 PathProgramCache]: Analyzing trace with hash -77658400, now seen corresponding path program 1 times [2019-10-14 23:44:26,936 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:26,938 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854379540] [2019-10-14 23:44:26,939 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:26,939 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:26,939 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:27,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:27,367 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-14 23:44:27,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:27,406 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 23:44:27,408 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854379540] [2019-10-14 23:44:27,409 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:27,409 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:44:27,409 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579402327] [2019-10-14 23:44:27,410 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:44:27,410 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:27,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:44:27,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:44:27,411 INFO L87 Difference]: Start difference. First operand 1636 states and 2430 transitions. Second operand 5 states. [2019-10-14 23:44:28,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:28,648 INFO L93 Difference]: Finished difference Result 3258 states and 4842 transitions. [2019-10-14 23:44:28,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:44:28,649 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2019-10-14 23:44:28,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:28,658 INFO L225 Difference]: With dead ends: 3258 [2019-10-14 23:44:28,658 INFO L226 Difference]: Without dead ends: 1634 [2019-10-14 23:44:28,662 INFO L600 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 [2019-10-14 23:44:28,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2019-10-14 23:44:28,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1634. [2019-10-14 23:44:28,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1634 states. [2019-10-14 23:44:28,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 2426 transitions. [2019-10-14 23:44:28,781 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 2426 transitions. Word has length 149 [2019-10-14 23:44:28,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:28,781 INFO L462 AbstractCegarLoop]: Abstraction has 1634 states and 2426 transitions. [2019-10-14 23:44:28,782 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:44:28,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 2426 transitions. [2019-10-14 23:44:28,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-14 23:44:28,786 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:28,786 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:44:28,786 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:28,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:28,787 INFO L82 PathProgramCache]: Analyzing trace with hash -381277494, now seen corresponding path program 1 times [2019-10-14 23:44:28,787 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:28,787 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003163941] [2019-10-14 23:44:28,787 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:28,788 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:28,788 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:28,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:29,060 WARN L191 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-14 23:44:29,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:29,105 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 23:44:29,105 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003163941] [2019-10-14 23:44:29,105 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:29,106 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:44:29,106 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859369322] [2019-10-14 23:44:29,106 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:44:29,107 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:29,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:44:29,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:44:29,107 INFO L87 Difference]: Start difference. First operand 1634 states and 2426 transitions. Second operand 4 states. [2019-10-14 23:44:31,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:31,253 INFO L93 Difference]: Finished difference Result 3870 states and 5761 transitions. [2019-10-14 23:44:31,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:44:31,254 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2019-10-14 23:44:31,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:31,266 INFO L225 Difference]: With dead ends: 3870 [2019-10-14 23:44:31,266 INFO L226 Difference]: Without dead ends: 2414 [2019-10-14 23:44:31,269 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:44:31,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2414 states. [2019-10-14 23:44:31,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2414 to 2412. [2019-10-14 23:44:31,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2412 states. [2019-10-14 23:44:31,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 3535 transitions. [2019-10-14 23:44:31,370 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 3535 transitions. Word has length 149 [2019-10-14 23:44:31,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:31,370 INFO L462 AbstractCegarLoop]: Abstraction has 2412 states and 3535 transitions. [2019-10-14 23:44:31,371 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:44:31,371 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 3535 transitions. [2019-10-14 23:44:31,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-10-14 23:44:31,375 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:31,376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:44:31,376 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:31,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:31,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1397721559, now seen corresponding path program 1 times [2019-10-14 23:44:31,377 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:31,377 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972401901] [2019-10-14 23:44:31,377 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:31,377 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:31,377 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:31,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:31,708 WARN L191 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-14 23:44:31,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:31,760 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 23:44:31,761 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972401901] [2019-10-14 23:44:31,761 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:31,761 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:44:31,761 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481361571] [2019-10-14 23:44:31,762 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:44:31,762 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:31,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:44:31,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:44:31,763 INFO L87 Difference]: Start difference. First operand 2412 states and 3535 transitions. Second operand 6 states. [2019-10-14 23:44:32,044 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-14 23:44:33,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:33,329 INFO L93 Difference]: Finished difference Result 4658 states and 6855 transitions. [2019-10-14 23:44:33,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:44:33,330 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 152 [2019-10-14 23:44:33,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:33,339 INFO L225 Difference]: With dead ends: 4658 [2019-10-14 23:44:33,340 INFO L226 Difference]: Without dead ends: 2414 [2019-10-14 23:44:33,345 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:44:33,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2414 states. [2019-10-14 23:44:33,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2414 to 2412. [2019-10-14 23:44:33,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2412 states. [2019-10-14 23:44:33,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 3520 transitions. [2019-10-14 23:44:33,448 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 3520 transitions. Word has length 152 [2019-10-14 23:44:33,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:33,448 INFO L462 AbstractCegarLoop]: Abstraction has 2412 states and 3520 transitions. [2019-10-14 23:44:33,448 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:44:33,448 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 3520 transitions. [2019-10-14 23:44:33,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-10-14 23:44:33,453 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:33,453 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:44:33,453 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:33,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:33,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1633318332, now seen corresponding path program 1 times [2019-10-14 23:44:33,454 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:33,454 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334003712] [2019-10-14 23:44:33,455 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:33,455 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:33,455 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:33,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:33,919 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-14 23:44:33,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:33,963 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 23:44:33,964 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334003712] [2019-10-14 23:44:33,964 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:33,965 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:44:33,965 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265264471] [2019-10-14 23:44:33,966 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:44:33,966 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:33,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:44:33,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:44:33,967 INFO L87 Difference]: Start difference. First operand 2412 states and 3520 transitions. Second operand 5 states. [2019-10-14 23:44:36,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:36,104 INFO L93 Difference]: Finished difference Result 6242 states and 9103 transitions. [2019-10-14 23:44:36,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:44:36,105 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2019-10-14 23:44:36,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:36,120 INFO L225 Difference]: With dead ends: 6242 [2019-10-14 23:44:36,120 INFO L226 Difference]: Without dead ends: 3853 [2019-10-14 23:44:36,125 INFO L600 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 [2019-10-14 23:44:36,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3853 states. [2019-10-14 23:44:36,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3853 to 3851. [2019-10-14 23:44:36,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3851 states. [2019-10-14 23:44:36,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3851 states to 3851 states and 5567 transitions. [2019-10-14 23:44:36,282 INFO L78 Accepts]: Start accepts. Automaton has 3851 states and 5567 transitions. Word has length 152 [2019-10-14 23:44:36,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:36,282 INFO L462 AbstractCegarLoop]: Abstraction has 3851 states and 5567 transitions. [2019-10-14 23:44:36,282 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:44:36,283 INFO L276 IsEmpty]: Start isEmpty. Operand 3851 states and 5567 transitions. [2019-10-14 23:44:36,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-10-14 23:44:36,288 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:36,289 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:44:36,289 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:36,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:36,289 INFO L82 PathProgramCache]: Analyzing trace with hash -83620211, now seen corresponding path program 1 times [2019-10-14 23:44:36,290 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:36,290 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221183424] [2019-10-14 23:44:36,290 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:36,290 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:36,290 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:36,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:36,558 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-14 23:44:36,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:36,626 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 23:44:36,626 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221183424] [2019-10-14 23:44:36,626 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:36,627 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:44:36,627 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719872875] [2019-10-14 23:44:36,628 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:44:36,628 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:36,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:44:36,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:44:36,633 INFO L87 Difference]: Start difference. First operand 3851 states and 5567 transitions. Second operand 4 states. [2019-10-14 23:44:38,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:38,820 INFO L93 Difference]: Finished difference Result 10239 states and 14831 transitions. [2019-10-14 23:44:38,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:44:38,822 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2019-10-14 23:44:38,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:38,844 INFO L225 Difference]: With dead ends: 10239 [2019-10-14 23:44:38,844 INFO L226 Difference]: Without dead ends: 6731 [2019-10-14 23:44:38,851 INFO L600 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 [2019-10-14 23:44:38,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6731 states. [2019-10-14 23:44:39,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6731 to 6729. [2019-10-14 23:44:39,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6729 states. [2019-10-14 23:44:39,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6729 states to 6729 states and 9603 transitions. [2019-10-14 23:44:39,198 INFO L78 Accepts]: Start accepts. Automaton has 6729 states and 9603 transitions. Word has length 154 [2019-10-14 23:44:39,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:39,199 INFO L462 AbstractCegarLoop]: Abstraction has 6729 states and 9603 transitions. [2019-10-14 23:44:39,199 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:44:39,199 INFO L276 IsEmpty]: Start isEmpty. Operand 6729 states and 9603 transitions. [2019-10-14 23:44:39,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-10-14 23:44:39,208 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:39,208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:44:39,208 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:39,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:39,209 INFO L82 PathProgramCache]: Analyzing trace with hash 423811114, now seen corresponding path program 1 times [2019-10-14 23:44:39,209 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:39,209 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271110007] [2019-10-14 23:44:39,209 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:39,210 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:39,210 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:39,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:39,493 WARN L191 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-14 23:44:39,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:39,530 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 23:44:39,531 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271110007] [2019-10-14 23:44:39,531 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:39,531 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:44:39,531 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500570912] [2019-10-14 23:44:39,532 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:44:39,532 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:39,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:44:39,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:44:39,533 INFO L87 Difference]: Start difference. First operand 6729 states and 9603 transitions. Second operand 5 states. [2019-10-14 23:44:40,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:40,735 INFO L93 Difference]: Finished difference Result 11002 states and 15732 transitions. [2019-10-14 23:44:40,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:44:40,736 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2019-10-14 23:44:40,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:40,757 INFO L225 Difference]: With dead ends: 11002 [2019-10-14 23:44:40,757 INFO L226 Difference]: Without dead ends: 5964 [2019-10-14 23:44:40,764 INFO L600 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 [2019-10-14 23:44:40,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5964 states. [2019-10-14 23:44:40,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5964 to 5964. [2019-10-14 23:44:40,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5964 states. [2019-10-14 23:44:40,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5964 states to 5964 states and 8508 transitions. [2019-10-14 23:44:40,967 INFO L78 Accepts]: Start accepts. Automaton has 5964 states and 8508 transitions. Word has length 154 [2019-10-14 23:44:40,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:40,968 INFO L462 AbstractCegarLoop]: Abstraction has 5964 states and 8508 transitions. [2019-10-14 23:44:40,968 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:44:40,968 INFO L276 IsEmpty]: Start isEmpty. Operand 5964 states and 8508 transitions. [2019-10-14 23:44:40,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-10-14 23:44:40,976 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:40,977 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:44:40,977 INFO L410 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:40,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:40,977 INFO L82 PathProgramCache]: Analyzing trace with hash 923876710, now seen corresponding path program 1 times [2019-10-14 23:44:40,978 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:40,978 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464490944] [2019-10-14 23:44:40,978 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:40,978 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:40,978 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:41,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:41,296 WARN L191 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-14 23:44:41,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:41,355 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 23:44:41,356 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464490944] [2019-10-14 23:44:41,356 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:41,356 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:44:41,356 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354219181] [2019-10-14 23:44:41,357 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:44:41,357 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:41,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:44:41,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:44:41,358 INFO L87 Difference]: Start difference. First operand 5964 states and 8508 transitions. Second operand 5 states. [2019-10-14 23:44:43,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:43,502 INFO L93 Difference]: Finished difference Result 17410 states and 24777 transitions. [2019-10-14 23:44:43,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:44:43,503 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2019-10-14 23:44:43,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:43,525 INFO L225 Difference]: With dead ends: 17410 [2019-10-14 23:44:43,525 INFO L226 Difference]: Without dead ends: 11489 [2019-10-14 23:44:43,536 INFO L600 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 [2019-10-14 23:44:43,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11489 states. [2019-10-14 23:44:44,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11489 to 11487. [2019-10-14 23:44:44,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11487 states. [2019-10-14 23:44:44,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11487 states to 11487 states and 16184 transitions. [2019-10-14 23:44:44,094 INFO L78 Accepts]: Start accepts. Automaton has 11487 states and 16184 transitions. Word has length 157 [2019-10-14 23:44:44,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:44,095 INFO L462 AbstractCegarLoop]: Abstraction has 11487 states and 16184 transitions. [2019-10-14 23:44:44,095 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:44:44,095 INFO L276 IsEmpty]: Start isEmpty. Operand 11487 states and 16184 transitions. [2019-10-14 23:44:44,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-14 23:44:44,111 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:44,111 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:44:44,112 INFO L410 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:44,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:44,112 INFO L82 PathProgramCache]: Analyzing trace with hash -2109819854, now seen corresponding path program 1 times [2019-10-14 23:44:44,112 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:44,113 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943976948] [2019-10-14 23:44:44,113 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:44,113 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:44,113 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:44,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:44,343 WARN L191 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-14 23:44:44,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:44,372 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 23:44:44,373 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943976948] [2019-10-14 23:44:44,373 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:44,373 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:44:44,373 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541487770] [2019-10-14 23:44:44,374 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:44:44,374 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:44,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:44:44,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:44:44,375 INFO L87 Difference]: Start difference. First operand 11487 states and 16184 transitions. Second operand 4 states. [2019-10-14 23:44:46,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:46,913 INFO L93 Difference]: Finished difference Result 34269 states and 48305 transitions. [2019-10-14 23:44:46,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:44:46,915 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2019-10-14 23:44:46,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:46,957 INFO L225 Difference]: With dead ends: 34269 [2019-10-14 23:44:46,957 INFO L226 Difference]: Without dead ends: 22887 [2019-10-14 23:44:46,978 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:44:47,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22887 states. [2019-10-14 23:44:48,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22887 to 11493. [2019-10-14 23:44:48,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11493 states. [2019-10-14 23:44:48,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11493 states to 11493 states and 16190 transitions. [2019-10-14 23:44:48,102 INFO L78 Accepts]: Start accepts. Automaton has 11493 states and 16190 transitions. Word has length 158 [2019-10-14 23:44:48,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:48,102 INFO L462 AbstractCegarLoop]: Abstraction has 11493 states and 16190 transitions. [2019-10-14 23:44:48,102 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:44:48,102 INFO L276 IsEmpty]: Start isEmpty. Operand 11493 states and 16190 transitions. [2019-10-14 23:44:48,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-14 23:44:48,124 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:48,124 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:44:48,124 INFO L410 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:48,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:48,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1177749259, now seen corresponding path program 1 times [2019-10-14 23:44:48,125 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:48,125 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469934544] [2019-10-14 23:44:48,125 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:48,125 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:48,126 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY