/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/recHanoi01.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:02:10,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:02:10,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:02:10,557 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:02:10,557 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:02:10,559 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:02:10,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:02:10,562 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:02:10,564 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:02:10,565 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:02:10,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:02:10,567 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:02:10,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:02:10,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:02:10,570 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:02:10,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:02:10,572 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:02:10,573 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:02:10,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:02:10,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:02:10,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:02:10,580 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:02:10,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:02:10,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:02:10,585 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:02:10,585 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:02:10,585 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:02:10,586 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:02:10,587 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:02:10,591 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:02:10,591 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:02:10,592 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:02:10,593 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:02:10,594 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:02:10,596 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:02:10,596 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:02:10,597 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:02:10,597 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:02:10,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:02:10,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:02:10,601 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:02:10,601 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 17:02:10,657 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:02:10,657 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:02:10,660 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:02:10,661 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:02:10,661 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:02:10,661 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:02:10,661 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:02:10,661 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:02:10,662 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:02:10,662 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:02:10,662 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:02:10,662 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:02:10,662 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:02:10,663 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:02:10,663 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:02:10,663 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:02:10,664 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:02:10,664 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:02:10,664 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:02:10,664 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:02:10,664 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:02:10,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:02:10,665 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:02:10,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:02:10,666 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:02:10,666 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:02:10,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:02:10,666 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:02:10,667 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:02:10,667 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; [2020-09-24 17:02:11,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:02:11,187 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:02:11,191 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:02:11,193 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:02:11,193 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:02:11,195 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/recHanoi01.c [2020-09-24 17:02:11,272 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ce50cbbb/0a5b4226bf9d4c5d8a46516435dad11e/FLAG93981020f [2020-09-24 17:02:11,815 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:02:11,816 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/recHanoi01.c [2020-09-24 17:02:11,825 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ce50cbbb/0a5b4226bf9d4c5d8a46516435dad11e/FLAG93981020f [2020-09-24 17:02:12,186 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ce50cbbb/0a5b4226bf9d4c5d8a46516435dad11e [2020-09-24 17:02:12,199 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:02:12,204 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:02:12,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:02:12,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:02:12,210 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:02:12,211 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:02:12" (1/1) ... [2020-09-24 17:02:12,216 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@363635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:02:12, skipping insertion in model container [2020-09-24 17:02:12,216 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:02:12" (1/1) ... [2020-09-24 17:02:12,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:02:12,250 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:02:12,464 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:02:12,470 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:02:12,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:02:12,505 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:02:12,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:02:12 WrapperNode [2020-09-24 17:02:12,506 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:02:12,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:02:12,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:02:12,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:02:12,522 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:02:12" (1/1) ... [2020-09-24 17:02:12,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:02:12" (1/1) ... [2020-09-24 17:02:12,611 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:02:12" (1/1) ... [2020-09-24 17:02:12,612 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:02:12" (1/1) ... [2020-09-24 17:02:12,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:02:12" (1/1) ... [2020-09-24 17:02:12,621 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:02:12" (1/1) ... [2020-09-24 17:02:12,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:02:12" (1/1) ... [2020-09-24 17:02:12,629 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:02:12,629 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:02:12,629 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:02:12,630 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:02:12,631 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:02:12" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-24 17:02:12,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:02:12,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:02:12,715 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2020-09-24 17:02:12,715 INFO L138 BoogieDeclarations]: Found implementation of procedure applyHanoi [2020-09-24 17:02:12,715 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:02:12,716 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:02:12,716 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 17:02:12,716 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2020-09-24 17:02:12,717 INFO L130 BoogieDeclarations]: Found specification of procedure applyHanoi [2020-09-24 17:02:12,717 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:02:12,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:02:12,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:02:12,997 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:02:12,997 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 17:02:13,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:02:13 BoogieIcfgContainer [2020-09-24 17:02:13,003 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:02:13,012 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:02:13,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:02:13,016 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:02:13,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:02:12" (1/3) ... [2020-09-24 17:02:13,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58b5fa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:02:13, skipping insertion in model container [2020-09-24 17:02:13,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:02:12" (2/3) ... [2020-09-24 17:02:13,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58b5fa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:02:13, skipping insertion in model container [2020-09-24 17:02:13,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:02:13" (3/3) ... [2020-09-24 17:02:13,020 INFO L109 eAbstractionObserver]: Analyzing ICFG recHanoi01.c [2020-09-24 17:02:13,030 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:02:13,039 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:02:13,058 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:02:13,091 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:02:13,091 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:02:13,091 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:02:13,091 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:02:13,091 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:02:13,092 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:02:13,092 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:02:13,092 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:02:13,115 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-24 17:02:13,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-24 17:02:13,124 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:02:13,125 INFO L422 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] [2020-09-24 17:02:13,125 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:02:13,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:02:13,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1892500808, now seen corresponding path program 1 times [2020-09-24 17:02:13,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:02:13,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853032351] [2020-09-24 17:02:13,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:02:13,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:13,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:13,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:13,814 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:13,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-24 17:02:13,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:02:13,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 531 [2020-09-24 17:02:13,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:13,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:02:13,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 17:02:13,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 17:02:13,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:02:13,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:02:13,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:13,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:13,895 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:13,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 17:02:13,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:13,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:02:13,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:13,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:02:13,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:13,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:02:13,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:02:13,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 17:02:13,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:13,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:13,934 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:13,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 17:02:13,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:13,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 17:02:13,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:13,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:02:13,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:02:13,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 17:02:13,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:02:13,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-24 17:02:13,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:13,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:13,999 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:13,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:02:13,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:14,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 17:02:14,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:14,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:02:14,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 17:02:14,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:02:14,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:02:14,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:02:14,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1853032351] [2020-09-24 17:02:14,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:02:14,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 17:02:14,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169898594] [2020-09-24 17:02:14,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 17:02:14,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:02:14,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 17:02:14,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 17:02:14,042 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 6 states. [2020-09-24 17:02:14,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:02:14,313 INFO L93 Difference]: Finished difference Result 70 states and 80 transitions. [2020-09-24 17:02:14,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 17:02:14,315 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-09-24 17:02:14,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:02:14,329 INFO L225 Difference]: With dead ends: 70 [2020-09-24 17:02:14,329 INFO L226 Difference]: Without dead ends: 41 [2020-09-24 17:02:14,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-24 17:02:14,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-09-24 17:02:14,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-09-24 17:02:14,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-24 17:02:14,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2020-09-24 17:02:14,385 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 29 [2020-09-24 17:02:14,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:02:14,386 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2020-09-24 17:02:14,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 17:02:14,386 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2020-09-24 17:02:14,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 17:02:14,390 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:02:14,390 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:02:14,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:02:14,391 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:02:14,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:02:14,392 INFO L82 PathProgramCache]: Analyzing trace with hash -165736076, now seen corresponding path program 1 times [2020-09-24 17:02:14,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:02:14,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546376595] [2020-09-24 17:02:14,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:02:14,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:14,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:14,907 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:14,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 17:02:14,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:14,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 482 [2020-09-24 17:02:14,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:14,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 17:02:14,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 17:02:14,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 17:02:14,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:14,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:02:14,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:14,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:14,979 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:14,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 17:02:14,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:14,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:02:14,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:14,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:02:14,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:14,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:02:14,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:14,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 17:02:14,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:15,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:15,154 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:15,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 17:02:15,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:15,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-09-24 17:02:15,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:15,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 17:02:15,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 17:02:15,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 17:02:15,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:02:15,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 17:02:15,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:15,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:15,286 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:15,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 17:02:15,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:15,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 17:02:15,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:15,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:02:15,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 17:02:15,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 17:02:15,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:15,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 17:02:15,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:15,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:15,323 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:15,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 17:02:15,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:15,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 17:02:15,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:15,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:02:15,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 17:02:15,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 17:02:15,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:02:15,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-24 17:02:15,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:15,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:15,360 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:15,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:02:15,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:15,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 17:02:15,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:15,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:02:15,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:15,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 17:02:15,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:15,385 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-24 17:02:15,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546376595] [2020-09-24 17:02:15,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:02:15,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 17:02:15,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107073638] [2020-09-24 17:02:15,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 17:02:15,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:02:15,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 17:02:15,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-24 17:02:15,390 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 11 states. [2020-09-24 17:02:16,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:02:16,002 INFO L93 Difference]: Finished difference Result 93 states and 110 transitions. [2020-09-24 17:02:16,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 17:02:16,003 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 48 [2020-09-24 17:02:16,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:02:16,006 INFO L225 Difference]: With dead ends: 93 [2020-09-24 17:02:16,007 INFO L226 Difference]: Without dead ends: 85 [2020-09-24 17:02:16,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2020-09-24 17:02:16,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-09-24 17:02:16,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 75. [2020-09-24 17:02:16,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-24 17:02:16,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 92 transitions. [2020-09-24 17:02:16,029 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 92 transitions. Word has length 48 [2020-09-24 17:02:16,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:02:16,029 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 92 transitions. [2020-09-24 17:02:16,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 17:02:16,030 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 92 transitions. [2020-09-24 17:02:16,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-24 17:02:16,033 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:02:16,033 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:02:16,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 17:02:16,033 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:02:16,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:02:16,034 INFO L82 PathProgramCache]: Analyzing trace with hash 492898986, now seen corresponding path program 1 times [2020-09-24 17:02:16,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:02:16,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706014252] [2020-09-24 17:02:16,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:02:16,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:16,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:16,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:16,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:16,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:18,123 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:18,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-24 17:02:18,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 17:02:18,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2070 [2020-09-24 17:02:18,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:18,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 17:02:18,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 17:02:18,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 17:02:18,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:18,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:02:18,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:18,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:18,156 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:18,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 17:02:18,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:18,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:02:18,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:18,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:02:18,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:18,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:02:18,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 17:02:18,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 17:02:18,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:18,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:18,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:18,449 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:18,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 17:02:18,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:02:18,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-09-24 17:02:18,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:18,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:02:18,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:18,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 17:02:18,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:18,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 17:02:18,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:18,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:18,518 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:18,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 17:02:18,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:18,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 17:02:18,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:18,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:02:18,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:18,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 17:02:18,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:18,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 17:02:18,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:18,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:18,551 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:18,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 17:02:18,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:18,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 17:02:18,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:18,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:02:18,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:18,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 17:02:18,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:18,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-24 17:02:18,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:18,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:18,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:18,651 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:18,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 17:02:18,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:02:18,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-24 17:02:18,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:18,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:02:18,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:02:18,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 17:02:18,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:18,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:02:18,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:18,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:18,713 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:18,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:02:18,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:18,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 17:02:18,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:18,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:02:18,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:18,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 17:02:18,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:18,753 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-24 17:02:18,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706014252] [2020-09-24 17:02:18,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:02:18,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 17:02:18,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496400047] [2020-09-24 17:02:18,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 17:02:18,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:02:18,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 17:02:18,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-24 17:02:18,757 INFO L87 Difference]: Start difference. First operand 75 states and 92 transitions. Second operand 11 states. [2020-09-24 17:02:19,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:02:19,128 INFO L93 Difference]: Finished difference Result 132 states and 171 transitions. [2020-09-24 17:02:19,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 17:02:19,129 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 56 [2020-09-24 17:02:19,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:02:19,132 INFO L225 Difference]: With dead ends: 132 [2020-09-24 17:02:19,132 INFO L226 Difference]: Without dead ends: 76 [2020-09-24 17:02:19,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2020-09-24 17:02:19,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-09-24 17:02:19,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 70. [2020-09-24 17:02:19,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-24 17:02:19,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 84 transitions. [2020-09-24 17:02:19,161 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 84 transitions. Word has length 56 [2020-09-24 17:02:19,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:02:19,163 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 84 transitions. [2020-09-24 17:02:19,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 17:02:19,164 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 84 transitions. [2020-09-24 17:02:19,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-24 17:02:19,169 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:02:19,169 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:02:19,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 17:02:19,174 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:02:19,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:02:19,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1310810726, now seen corresponding path program 2 times [2020-09-24 17:02:19,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:02:19,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [687382145] [2020-09-24 17:02:19,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:02:19,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:19,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:19,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:19,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:19,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:20,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:20,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:24,220 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:24,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-24 17:02:24,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 17:02:24,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-24 17:02:24,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:24,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:02:24,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 17:02:24,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-24 17:02:24,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:24,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:02:24,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:24,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:24,251 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:24,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 17:02:24,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:24,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:02:24,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:24,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:02:24,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:24,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:02:24,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:02:24,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 17:02:24,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:24,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:24,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:24,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:24,998 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:25,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 17:02:25,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 17:02:25,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 728 [2020-09-24 17:02:25,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:25,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 17:02:25,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 17:02:25,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-24 17:02:25,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:25,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 17:02:25,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:25,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:25,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:25,256 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:25,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 17:02:25,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:02:25,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-09-24 17:02:25,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:25,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:02:25,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:25,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 17:02:25,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:25,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 17:02:25,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:25,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:25,292 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:25,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 17:02:25,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:25,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 17:02:25,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:25,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:02:25,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:25,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 17:02:25,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:25,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 17:02:25,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:25,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:25,322 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:25,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 17:02:25,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:25,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 17:02:25,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:25,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:02:25,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:25,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 17:02:25,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:02:25,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-24 17:02:25,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:25,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:25,370 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:25,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 17:02:25,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:25,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 17:02:25,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:25,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:02:25,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:02:25,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 17:02:25,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:25,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-24 17:02:25,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:25,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:25,410 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:25,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:02:25,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:25,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 17:02:25,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:25,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:02:25,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 17:02:25,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:02:25,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:25,421 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 40 proven. 21 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-24 17:02:25,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [687382145] [2020-09-24 17:02:25,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:02:25,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 17:02:25,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433218584] [2020-09-24 17:02:25,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 17:02:25,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:02:25,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 17:02:25,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-24 17:02:25,426 INFO L87 Difference]: Start difference. First operand 70 states and 84 transitions. Second operand 10 states. [2020-09-24 17:02:25,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:02:25,714 INFO L93 Difference]: Finished difference Result 124 states and 158 transitions. [2020-09-24 17:02:25,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 17:02:25,714 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-09-24 17:02:25,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:02:25,716 INFO L225 Difference]: With dead ends: 124 [2020-09-24 17:02:25,716 INFO L226 Difference]: Without dead ends: 79 [2020-09-24 17:02:25,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2020-09-24 17:02:25,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-24 17:02:25,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 63. [2020-09-24 17:02:25,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-24 17:02:25,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2020-09-24 17:02:25,728 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 67 [2020-09-24 17:02:25,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:02:25,728 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2020-09-24 17:02:25,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 17:02:25,728 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2020-09-24 17:02:25,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-24 17:02:25,731 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:02:25,732 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:02:25,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 17:02:25,732 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:02:25,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:02:25,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1835668384, now seen corresponding path program 3 times [2020-09-24 17:02:25,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:02:25,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983806456] [2020-09-24 17:02:25,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:02:25,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:25,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:25,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:25,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:25,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:25,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:27,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:47,731 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:47,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-09-24 17:02:47,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 17:02:47,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21976 [2020-09-24 17:02:47,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:47,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 17:02:47,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 17:02:47,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-24 17:02:47,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:47,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:02:47,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:47,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:47,764 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:47,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 17:02:47,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:47,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:02:47,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:47,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:02:47,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:47,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:02:47,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:47,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 17:02:47,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:47,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:47,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:47,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:48,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:58,613 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:58,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 17:02:58,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 17:02:58,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10834 [2020-09-24 17:02:58,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:58,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 17:02:58,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:58,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 17:02:58,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:58,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 17:02:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:58,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:58,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:58,904 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:58,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 17:02:58,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:02:58,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-09-24 17:02:58,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:58,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:02:58,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:58,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 17:02:58,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:58,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 17:02:58,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:58,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:58,931 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:58,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 17:02:58,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:58,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 17:02:58,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:58,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:02:58,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:58,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 17:02:58,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:58,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 17:02:58,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:58,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:58,953 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:58,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 17:02:58,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:58,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 17:02:58,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:58,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:02:58,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:58,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 17:02:58,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:58,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-24 17:02:58,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:59,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:59,025 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:59,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 17:02:59,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:59,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 17:02:59,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:59,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:02:59,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:59,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 17:02:59,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:59,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 17:02:59,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:59,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:59,038 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:59,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 17:02:59,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:59,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 17:02:59,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:59,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:02:59,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:59,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:02:59,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:59,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 17:02:59,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:59,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:59,048 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:59,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 17:02:59,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:59,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 17:02:59,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:59,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:02:59,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:59,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:02:59,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:59,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-24 17:02:59,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:59,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:59,070 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:59,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:02:59,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:59,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 17:02:59,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:59,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:02:59,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:02:59,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 17:02:59,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:59,103 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 22 proven. 75 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-09-24 17:02:59,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1983806456] [2020-09-24 17:02:59,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:02:59,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 17:02:59,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044173386] [2020-09-24 17:02:59,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 17:02:59,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:02:59,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 17:02:59,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-24 17:02:59,106 INFO L87 Difference]: Start difference. First operand 63 states and 71 transitions. Second operand 11 states. [2020-09-24 17:02:59,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:02:59,400 INFO L93 Difference]: Finished difference Result 85 states and 97 transitions. [2020-09-24 17:02:59,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 17:02:59,401 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 86 [2020-09-24 17:02:59,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:02:59,403 INFO L225 Difference]: With dead ends: 85 [2020-09-24 17:02:59,403 INFO L226 Difference]: Without dead ends: 79 [2020-09-24 17:02:59,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2020-09-24 17:02:59,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-24 17:02:59,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 65. [2020-09-24 17:02:59,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-24 17:02:59,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2020-09-24 17:02:59,412 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 86 [2020-09-24 17:02:59,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:02:59,413 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2020-09-24 17:02:59,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 17:02:59,413 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2020-09-24 17:02:59,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-09-24 17:02:59,414 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:02:59,414 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:02:59,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 17:02:59,415 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:02:59,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:02:59,415 INFO L82 PathProgramCache]: Analyzing trace with hash -646694506, now seen corresponding path program 2 times [2020-09-24 17:02:59,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:02:59,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2070086202] [2020-09-24 17:02:59,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:02:59,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:59,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:00,430 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:03:00,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-24 17:03:00,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:03:00,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 991 [2020-09-24 17:03:00,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:03:00,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 17:03:00,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 17:03:00,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-09-24 17:03:00,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:03:00,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:03:00,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:03:00,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:00,526 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:03:00,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 17:03:00,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:03:00,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:03:00,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:03:00,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:03:00,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:03:00,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:03:00,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:03:00,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 17:03:00,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:03:00,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:01,049 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:03:01,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 17:03:01,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:03:01,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 505 [2020-09-24 17:03:01,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:03:01,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 17:03:01,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 17:03:01,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-24 17:03:01,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:03:01,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 17:03:01,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:03:01,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:01,233 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:03:01,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 17:03:01,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:03:01,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-24 17:03:01,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:03:01,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 17:03:01,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 17:03:01,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 17:03:01,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:03:01,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 17:03:01,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:03:01,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:01,275 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:03:01,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 17:03:01,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:03:01,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 17:03:01,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:03:01,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:03:01,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 17:03:01,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 17:03:01,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:03:01,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 17:03:01,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:03:01,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:01,308 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:03:01,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 17:03:01,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:03:01,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 17:03:01,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:03:01,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:03:01,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 17:03:01,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 17:03:01,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:03:01,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-24 17:03:01,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:03:01,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:01,429 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:03:01,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 17:03:01,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:03:01,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-24 17:03:01,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:03:01,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 17:03:01,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 17:03:01,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 17:03:01,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:03:01,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 17:03:01,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:03:01,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:01,558 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:03:01,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 17:03:01,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:03:01,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 17:03:01,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:03:01,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:03:01,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 17:03:01,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 17:03:01,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:03:01,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 17:03:01,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:03:01,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:01,614 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:03:01,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 17:03:01,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:03:01,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 17:03:01,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:03:01,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:03:01,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 17:03:01,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 17:03:01,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:03:01,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-24 17:03:01,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:03:01,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:01,661 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:03:01,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 17:03:01,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:03:01,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 17:03:01,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:03:01,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:03:01,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:03:01,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 17:03:01,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:03:01,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:03:01,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:03:01,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:01,714 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:03:01,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:03:01,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:03:01,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 17:03:01,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:03:01,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:03:01,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:03:01,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:03:01,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:03:01,755 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 6 proven. 63 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-09-24 17:03:01,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2070086202] [2020-09-24 17:03:01,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:03:01,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 17:03:01,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036098480] [2020-09-24 17:03:01,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 17:03:01,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:03:01,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 17:03:01,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2020-09-24 17:03:01,758 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand 17 states. [2020-09-24 17:03:02,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:03:02,613 INFO L93 Difference]: Finished difference Result 102 states and 118 transitions. [2020-09-24 17:03:02,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 17:03:02,614 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 94 [2020-09-24 17:03:02,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:03:02,616 INFO L225 Difference]: With dead ends: 102 [2020-09-24 17:03:02,619 INFO L226 Difference]: Without dead ends: 96 [2020-09-24 17:03:02,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=187, Invalid=1003, Unknown=0, NotChecked=0, Total=1190 [2020-09-24 17:03:02,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-24 17:03:02,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 85. [2020-09-24 17:03:02,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-24 17:03:02,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 101 transitions. [2020-09-24 17:03:02,634 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 101 transitions. Word has length 94 [2020-09-24 17:03:02,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:03:02,635 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 101 transitions. [2020-09-24 17:03:02,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 17:03:02,635 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 101 transitions. [2020-09-24 17:03:02,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-24 17:03:02,636 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:03:02,637 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 6, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:03:02,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 17:03:02,637 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:03:02,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:03:02,638 INFO L82 PathProgramCache]: Analyzing trace with hash 774145474, now seen corresponding path program 3 times [2020-09-24 17:03:02,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:03:02,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125408007] [2020-09-24 17:03:02,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:03:02,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:03:02,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:02,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:02,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:02,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:03,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:03,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking...