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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:46:21,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:46:21,526 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:46:21,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:46:21,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:46:21,540 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:46:21,541 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:46:21,543 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:46:21,545 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:46:21,546 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:46:21,547 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:46:21,548 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:46:21,548 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:46:21,549 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:46:21,550 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:46:21,551 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:46:21,552 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:46:21,553 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:46:21,555 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:46:21,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:46:21,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:46:21,559 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:46:21,560 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:46:21,561 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:46:21,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:46:21,564 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:46:21,564 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:46:21,565 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:46:21,565 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:46:21,566 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:46:21,566 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:46:21,567 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:46:21,568 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:46:21,569 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:46:21,570 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:46:21,570 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:46:21,571 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:46:21,571 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:46:21,571 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:46:21,572 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:46:21,573 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:46:21,574 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 19:46:21,596 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:46:21,596 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:46:21,598 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:46:21,599 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:46:21,599 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:46:21,599 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:46:21,599 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:46:21,599 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:46:21,599 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:46:21,600 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:46:21,601 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:46:21,601 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:46:21,601 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:46:21,602 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:46:21,602 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:46:21,602 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:46:21,602 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:46:21,602 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:46:21,603 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:46:21,603 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:46:21,603 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:46:21,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:46:21,604 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:46:21,604 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:46:21,604 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:46:21,604 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:46:21,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:46:21,605 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:46:21,605 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:46:21,905 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:46:21,926 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:46:21,930 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:46:21,931 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:46:21,932 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:46:21,933 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2019-10-13 19:46:22,005 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/715d54f03/c947b8b7227f42909cb5bd56817b11c2/FLAG854a3ee77 [2019-10-13 19:46:22,613 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:46:22,614 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2019-10-13 19:46:22,633 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/715d54f03/c947b8b7227f42909cb5bd56817b11c2/FLAG854a3ee77 [2019-10-13 19:46:22,865 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/715d54f03/c947b8b7227f42909cb5bd56817b11c2 [2019-10-13 19:46:22,873 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:46:22,875 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:46:22,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:46:22,876 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:46:22,880 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:46:22,881 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:46:22" (1/1) ... [2019-10-13 19:46:22,884 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bb305d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:22, skipping insertion in model container [2019-10-13 19:46:22,884 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:46:22" (1/1) ... [2019-10-13 19:46:22,892 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:46:22,974 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:46:23,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:46:23,692 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:46:24,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:46:24,085 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:46:24,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:24 WrapperNode [2019-10-13 19:46:24,086 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:46:24,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:46:24,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:46:24,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:46:24,102 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:24" (1/1) ... [2019-10-13 19:46:24,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:24" (1/1) ... [2019-10-13 19:46:24,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:24" (1/1) ... [2019-10-13 19:46:24,123 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:24" (1/1) ... [2019-10-13 19:46:24,154 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:24" (1/1) ... [2019-10-13 19:46:24,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:24" (1/1) ... [2019-10-13 19:46:24,200 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:24" (1/1) ... [2019-10-13 19:46:24,216 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:46:24,217 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:46:24,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:46:24,217 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:46:24,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:46:24,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:46:24,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:46:24,318 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:46:24,319 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:46:24,319 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-13 19:46:24,320 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-10-13 19:46:24,320 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-13 19:46:24,320 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-10-13 19:46:24,320 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 19:46:24,321 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-10-13 19:46:24,321 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-10-13 19:46:24,321 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-10-13 19:46:24,322 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-10-13 19:46:24,322 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-10-13 19:46:24,323 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-10-13 19:46:24,323 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-10-13 19:46:24,326 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:46:24,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:46:24,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:46:26,523 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:46:26,523 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-13 19:46:26,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:46:26 BoogieIcfgContainer [2019-10-13 19:46:26,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:46:26,529 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:46:26,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:46:26,534 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:46:26,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:46:22" (1/3) ... [2019-10-13 19:46:26,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bcdd120 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:46:26, skipping insertion in model container [2019-10-13 19:46:26,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:24" (2/3) ... [2019-10-13 19:46:26,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bcdd120 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:46:26, skipping insertion in model container [2019-10-13 19:46:26,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:46:26" (3/3) ... [2019-10-13 19:46:26,540 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2019-10-13 19:46:26,552 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:46:26,561 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-10-13 19:46:26,574 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-10-13 19:46:26,612 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:46:26,612 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:46:26,613 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:46:26,613 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:46:26,613 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:46:26,613 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:46:26,613 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:46:26,613 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:46:26,650 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states. [2019-10-13 19:46:26,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-10-13 19:46:26,673 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:26,674 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] [2019-10-13 19:46:26,677 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:26,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:26,682 INFO L82 PathProgramCache]: Analyzing trace with hash 598173108, now seen corresponding path program 1 times [2019-10-13 19:46:26,689 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:26,689 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339536893] [2019-10-13 19:46:26,689 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:26,689 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:26,690 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:27,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:28,016 WARN L191 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-13 19:46:28,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:28,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:28,119 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339536893] [2019-10-13 19:46:28,120 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:28,120 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:46:28,121 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769071109] [2019-10-13 19:46:28,126 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:46:28,126 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:28,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:46:28,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:46:28,144 INFO L87 Difference]: Start difference. First operand 429 states. Second operand 5 states. [2019-10-13 19:46:32,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:32,406 INFO L93 Difference]: Finished difference Result 1245 states and 2212 transitions. [2019-10-13 19:46:32,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 19:46:32,408 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2019-10-13 19:46:32,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:32,443 INFO L225 Difference]: With dead ends: 1245 [2019-10-13 19:46:32,444 INFO L226 Difference]: Without dead ends: 821 [2019-10-13 19:46:32,458 INFO L600 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 [2019-10-13 19:46:32,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2019-10-13 19:46:32,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 794. [2019-10-13 19:46:32,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 794 states. [2019-10-13 19:46:32,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1136 transitions. [2019-10-13 19:46:32,618 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1136 transitions. Word has length 154 [2019-10-13 19:46:32,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:32,619 INFO L462 AbstractCegarLoop]: Abstraction has 794 states and 1136 transitions. [2019-10-13 19:46:32,619 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:46:32,620 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1136 transitions. [2019-10-13 19:46:32,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-10-13 19:46:32,632 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:32,633 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] [2019-10-13 19:46:32,633 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:32,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:32,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1172332246, now seen corresponding path program 1 times [2019-10-13 19:46:32,635 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:32,635 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706153798] [2019-10-13 19:46:32,636 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:32,636 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:32,636 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:32,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:33,007 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-13 19:46:33,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:33,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:33,059 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706153798] [2019-10-13 19:46:33,059 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:33,060 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:46:33,060 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129815375] [2019-10-13 19:46:33,065 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:46:33,109 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:33,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:46:33,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:46:33,110 INFO L87 Difference]: Start difference. First operand 794 states and 1136 transitions. Second operand 4 states. [2019-10-13 19:46:36,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:36,553 INFO L93 Difference]: Finished difference Result 2336 states and 3338 transitions. [2019-10-13 19:46:36,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:46:36,554 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2019-10-13 19:46:36,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:36,566 INFO L225 Difference]: With dead ends: 2336 [2019-10-13 19:46:36,567 INFO L226 Difference]: Without dead ends: 1574 [2019-10-13 19:46:36,570 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 [2019-10-13 19:46:36,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1574 states. [2019-10-13 19:46:36,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1574 to 796. [2019-10-13 19:46:36,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 796 states. [2019-10-13 19:46:36,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1138 transitions. [2019-10-13 19:46:36,644 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1138 transitions. Word has length 155 [2019-10-13 19:46:36,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:36,647 INFO L462 AbstractCegarLoop]: Abstraction has 796 states and 1138 transitions. [2019-10-13 19:46:36,648 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:46:36,648 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1138 transitions. [2019-10-13 19:46:36,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-10-13 19:46:36,653 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:36,653 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] [2019-10-13 19:46:36,654 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:36,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:36,655 INFO L82 PathProgramCache]: Analyzing trace with hash 501625459, now seen corresponding path program 1 times [2019-10-13 19:46:36,656 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:36,656 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926078560] [2019-10-13 19:46:36,657 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:36,657 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:36,657 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:36,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:37,173 WARN L191 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-13 19:46:37,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:37,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:37,230 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926078560] [2019-10-13 19:46:37,230 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:37,231 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:46:37,240 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141691600] [2019-10-13 19:46:37,241 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:46:37,241 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:37,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:46:37,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:46:37,242 INFO L87 Difference]: Start difference. First operand 796 states and 1138 transitions. Second operand 4 states. [2019-10-13 19:46:40,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:40,556 INFO L93 Difference]: Finished difference Result 2139 states and 3061 transitions. [2019-10-13 19:46:40,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:46:40,557 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 156 [2019-10-13 19:46:40,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:40,565 INFO L225 Difference]: With dead ends: 2139 [2019-10-13 19:46:40,566 INFO L226 Difference]: Without dead ends: 1540 [2019-10-13 19:46:40,567 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:46:40,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1540 states. [2019-10-13 19:46:40,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1540 to 1513. [2019-10-13 19:46:40,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1513 states. [2019-10-13 19:46:40,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1513 states to 1513 states and 2153 transitions. [2019-10-13 19:46:40,630 INFO L78 Accepts]: Start accepts. Automaton has 1513 states and 2153 transitions. Word has length 156 [2019-10-13 19:46:40,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:40,631 INFO L462 AbstractCegarLoop]: Abstraction has 1513 states and 2153 transitions. [2019-10-13 19:46:40,631 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:46:40,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1513 states and 2153 transitions. [2019-10-13 19:46:40,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-10-13 19:46:40,634 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:40,635 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] [2019-10-13 19:46:40,635 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:40,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:40,635 INFO L82 PathProgramCache]: Analyzing trace with hash 104654224, now seen corresponding path program 1 times [2019-10-13 19:46:40,636 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:40,636 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041274924] [2019-10-13 19:46:40,636 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:40,636 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:40,636 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:40,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:41,084 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-13 19:46:41,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:41,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:41,126 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041274924] [2019-10-13 19:46:41,127 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:41,127 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:46:41,127 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693713272] [2019-10-13 19:46:41,128 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:46:41,128 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:41,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:46:41,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:46:41,129 INFO L87 Difference]: Start difference. First operand 1513 states and 2153 transitions. Second operand 5 states. [2019-10-13 19:46:42,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:42,810 INFO L93 Difference]: Finished difference Result 2489 states and 3549 transitions. [2019-10-13 19:46:42,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:46:42,811 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2019-10-13 19:46:42,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:42,818 INFO L225 Difference]: With dead ends: 2489 [2019-10-13 19:46:42,818 INFO L226 Difference]: Without dead ends: 1161 [2019-10-13 19:46:42,821 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 [2019-10-13 19:46:42,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2019-10-13 19:46:42,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 1161. [2019-10-13 19:46:42,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1161 states. [2019-10-13 19:46:42,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1161 states to 1161 states and 1645 transitions. [2019-10-13 19:46:42,865 INFO L78 Accepts]: Start accepts. Automaton has 1161 states and 1645 transitions. Word has length 156 [2019-10-13 19:46:42,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:42,866 INFO L462 AbstractCegarLoop]: Abstraction has 1161 states and 1645 transitions. [2019-10-13 19:46:42,866 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:46:42,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1161 states and 1645 transitions. [2019-10-13 19:46:42,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-13 19:46:42,869 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:42,869 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] [2019-10-13 19:46:42,869 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:42,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:42,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1233167963, now seen corresponding path program 1 times [2019-10-13 19:46:42,870 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:42,870 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638822548] [2019-10-13 19:46:42,870 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:42,871 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:42,871 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:42,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:43,237 WARN L191 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-13 19:46:43,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:43,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:43,290 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638822548] [2019-10-13 19:46:43,291 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:43,291 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:46:43,291 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839376435] [2019-10-13 19:46:43,292 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:46:43,292 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:43,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:46:43,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:46:43,293 INFO L87 Difference]: Start difference. First operand 1161 states and 1645 transitions. Second operand 4 states. [2019-10-13 19:46:45,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:45,573 INFO L93 Difference]: Finished difference Result 2522 states and 3657 transitions. [2019-10-13 19:46:45,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:46:45,574 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2019-10-13 19:46:45,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:45,583 INFO L225 Difference]: With dead ends: 2522 [2019-10-13 19:46:45,583 INFO L226 Difference]: Without dead ends: 1547 [2019-10-13 19:46:45,586 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:46:45,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1547 states. [2019-10-13 19:46:45,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1547 to 1382. [2019-10-13 19:46:45,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1382 states. [2019-10-13 19:46:45,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 2003 transitions. [2019-10-13 19:46:45,641 INFO L78 Accepts]: Start accepts. Automaton has 1382 states and 2003 transitions. Word has length 158 [2019-10-13 19:46:45,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:45,641 INFO L462 AbstractCegarLoop]: Abstraction has 1382 states and 2003 transitions. [2019-10-13 19:46:45,641 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:46:45,641 INFO L276 IsEmpty]: Start isEmpty. Operand 1382 states and 2003 transitions. [2019-10-13 19:46:45,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-10-13 19:46:45,644 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:45,645 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, 1] [2019-10-13 19:46:45,645 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:45,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:45,646 INFO L82 PathProgramCache]: Analyzing trace with hash -866694497, now seen corresponding path program 1 times [2019-10-13 19:46:45,646 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:45,646 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345722279] [2019-10-13 19:46:45,646 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:45,647 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:45,647 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:45,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:46,047 WARN L191 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-13 19:46:46,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:46,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:46,085 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345722279] [2019-10-13 19:46:46,085 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:46,085 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:46:46,085 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247826798] [2019-10-13 19:46:46,086 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:46:46,086 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:46,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:46:46,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:46:46,087 INFO L87 Difference]: Start difference. First operand 1382 states and 2003 transitions. Second operand 4 states. [2019-10-13 19:46:48,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:48,337 INFO L93 Difference]: Finished difference Result 3110 states and 4621 transitions. [2019-10-13 19:46:48,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:46:48,338 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2019-10-13 19:46:48,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:48,346 INFO L225 Difference]: With dead ends: 3110 [2019-10-13 19:46:48,347 INFO L226 Difference]: Without dead ends: 1998 [2019-10-13 19:46:48,349 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:46:48,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1998 states. [2019-10-13 19:46:48,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1998 to 1771. [2019-10-13 19:46:48,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1771 states. [2019-10-13 19:46:48,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1771 states to 1771 states and 2632 transitions. [2019-10-13 19:46:48,418 INFO L78 Accepts]: Start accepts. Automaton has 1771 states and 2632 transitions. Word has length 160 [2019-10-13 19:46:48,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:48,418 INFO L462 AbstractCegarLoop]: Abstraction has 1771 states and 2632 transitions. [2019-10-13 19:46:48,418 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:46:48,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1771 states and 2632 transitions. [2019-10-13 19:46:48,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-13 19:46:48,421 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:48,422 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, 1, 1] [2019-10-13 19:46:48,422 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:48,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:48,423 INFO L82 PathProgramCache]: Analyzing trace with hash 753095009, now seen corresponding path program 1 times [2019-10-13 19:46:48,423 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:48,423 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783936769] [2019-10-13 19:46:48,423 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:48,423 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:48,424 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:48,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:48,964 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-13 19:46:48,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:49,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:49,060 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783936769] [2019-10-13 19:46:49,061 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:49,061 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-10-13 19:46:49,061 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567730057] [2019-10-13 19:46:49,062 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 19:46:49,062 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:49,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 19:46:49,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:46:49,063 INFO L87 Difference]: Start difference. First operand 1771 states and 2632 transitions. Second operand 14 states. [2019-10-13 19:46:49,440 WARN L191 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2019-10-13 19:46:55,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:55,500 INFO L93 Difference]: Finished difference Result 14490 states and 22590 transitions. [2019-10-13 19:46:55,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-10-13 19:46:55,500 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 161 [2019-10-13 19:46:55,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:55,550 INFO L225 Difference]: With dead ends: 14490 [2019-10-13 19:46:55,551 INFO L226 Difference]: Without dead ends: 12938 [2019-10-13 19:46:55,557 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=372, Invalid=960, Unknown=0, NotChecked=0, Total=1332 [2019-10-13 19:46:55,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12938 states. [2019-10-13 19:46:56,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12938 to 7935. [2019-10-13 19:46:56,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7935 states. [2019-10-13 19:46:56,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7935 states to 7935 states and 12108 transitions. [2019-10-13 19:46:56,037 INFO L78 Accepts]: Start accepts. Automaton has 7935 states and 12108 transitions. Word has length 161 [2019-10-13 19:46:56,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:56,039 INFO L462 AbstractCegarLoop]: Abstraction has 7935 states and 12108 transitions. [2019-10-13 19:46:56,039 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-13 19:46:56,039 INFO L276 IsEmpty]: Start isEmpty. Operand 7935 states and 12108 transitions. [2019-10-13 19:46:56,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-13 19:46:56,045 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:56,046 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, 1, 1] [2019-10-13 19:46:56,046 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:56,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:56,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1464453224, now seen corresponding path program 1 times [2019-10-13 19:46:56,047 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:56,047 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630112062] [2019-10-13 19:46:56,047 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:56,047 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:56,047 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:56,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:56,513 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-13 19:46:56,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:56,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:56,615 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630112062] [2019-10-13 19:46:56,615 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:56,615 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:46:56,615 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364829019] [2019-10-13 19:46:56,616 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:46:56,616 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:56,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:46:56,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:46:56,617 INFO L87 Difference]: Start difference. First operand 7935 states and 12108 transitions. Second operand 10 states. [2019-10-13 19:46:57,097 WARN L191 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 205