/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-simple/id_i25_o25-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:04:49,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:04:49,539 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:04:49,565 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:04:49,566 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:04:49,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:04:49,568 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:04:49,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:04:49,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:04:49,573 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:04:49,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:04:49,580 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:04:49,580 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:04:49,585 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:04:49,586 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:04:49,587 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:04:49,588 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:04:49,589 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:04:49,591 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:04:49,593 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:04:49,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:04:49,596 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:04:49,597 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:04:49,598 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:04:49,600 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:04:49,600 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:04:49,601 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:04:49,602 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:04:49,602 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:04:49,603 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:04:49,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:04:49,605 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:04:49,605 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:04:49,606 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:04:49,608 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:04:49,608 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:04:49,609 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:04:49,609 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:04:49,609 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:04:49,610 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:04:49,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:04:49,612 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 17:04:49,639 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:04:49,640 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:04:49,641 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:04:49,641 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:04:49,641 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:04:49,642 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:04:49,642 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:04:49,642 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:04:49,642 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:04:49,643 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:04:49,643 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:04:49,643 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:04:49,643 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:04:49,643 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:04:49,644 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:04:49,644 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:04:49,644 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:04:49,644 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:04:49,645 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:04:49,645 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:04:49,645 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:04:49,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:04:49,645 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:04:49,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:04:49,646 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:04:49,646 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:04:49,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:04:49,646 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:04:49,647 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:04:49,647 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 17:04:50,159 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:04:50,178 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:04:50,183 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:04:50,185 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:04:50,186 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:04:50,188 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_i25_o25-2.c [2020-09-24 17:04:50,278 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2a681b456/3f188e2abc09457292463ef4440c59c6/FLAG78c68f212 [2020-09-24 17:04:50,841 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:04:50,842 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_i25_o25-2.c [2020-09-24 17:04:50,850 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2a681b456/3f188e2abc09457292463ef4440c59c6/FLAG78c68f212 [2020-09-24 17:04:51,173 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2a681b456/3f188e2abc09457292463ef4440c59c6 [2020-09-24 17:04:51,188 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:04:51,194 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:04:51,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:04:51,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:04:51,200 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:04:51,202 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:04:51" (1/1) ... [2020-09-24 17:04:51,206 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ab41b77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:04:51, skipping insertion in model container [2020-09-24 17:04:51,207 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:04:51" (1/1) ... [2020-09-24 17:04:51,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:04:51,244 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:04:51,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:04:51,499 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:04:51,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:04:51,529 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:04:51,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:04:51 WrapperNode [2020-09-24 17:04:51,530 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:04:51,531 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:04:51,531 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:04:51,531 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:04:51,544 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:04:51" (1/1) ... [2020-09-24 17:04:51,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:04:51" (1/1) ... [2020-09-24 17:04:51,550 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:04:51" (1/1) ... [2020-09-24 17:04:51,550 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:04:51" (1/1) ... [2020-09-24 17:04:51,554 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:04:51" (1/1) ... [2020-09-24 17:04:51,556 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:04:51" (1/1) ... [2020-09-24 17:04:51,557 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:04:51" (1/1) ... [2020-09-24 17:04:51,558 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:04:51,558 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:04:51,558 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:04:51,559 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:04:51,559 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:04:51" (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 17:04:51,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:04:51,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:04:51,705 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-24 17:04:51,706 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:04:51,706 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 17:04:51,706 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:04:51,706 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-24 17:04:51,706 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:04:51,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:04:51,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:04:51,952 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:04:51,952 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 17:04:51,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:04:51 BoogieIcfgContainer [2020-09-24 17:04:51,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:04:51,960 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:04:51,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:04:51,964 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:04:51,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:04:51" (1/3) ... [2020-09-24 17:04:51,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e01822e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:04:51, skipping insertion in model container [2020-09-24 17:04:51,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:04:51" (2/3) ... [2020-09-24 17:04:51,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e01822e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:04:51, skipping insertion in model container [2020-09-24 17:04:51,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:04:51" (3/3) ... [2020-09-24 17:04:51,969 INFO L109 eAbstractionObserver]: Analyzing ICFG id_i25_o25-2.c [2020-09-24 17:04:51,982 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:04:51,993 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:04:52,018 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:04:52,050 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:04:52,050 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:04:52,051 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:04:52,051 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:04:52,051 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:04:52,051 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:04:52,051 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:04:52,052 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:04:52,081 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-09-24 17:04:52,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 17:04:52,103 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:04:52,104 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:04:52,104 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:04:52,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:04:52,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1037734449, now seen corresponding path program 1 times [2020-09-24 17:04:52,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:04:52,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978304749] [2020-09-24 17:04:52,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:04:52,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:52,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:52,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:52,449 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:52,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 17:04:52,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:04:52,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-09-24 17:04:52,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:52,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:04:52,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 17:04:52,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 17:04:52,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 17:04:52,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:04:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:52,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:52,540 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:52,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:04:52,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:52,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:04:52,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:52,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:04:52,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:52,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:04:52,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:04:52,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 17:04:52,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:52,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:52,571 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:52,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:04:52,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:52,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 17:04:52,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:52,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:04:52,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:52,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:04:52,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:04:52,632 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 17:04:52,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978304749] [2020-09-24 17:04:52,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:04:52,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 17:04:52,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055310435] [2020-09-24 17:04:52,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 17:04:52,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:04:52,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 17:04:52,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 17:04:52,663 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2020-09-24 17:04:52,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:04:52,744 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-09-24 17:04:52,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 17:04:52,747 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 17:04:52,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:04:52,760 INFO L225 Difference]: With dead ends: 37 [2020-09-24 17:04:52,761 INFO L226 Difference]: Without dead ends: 23 [2020-09-24 17:04:52,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 17:04:52,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-09-24 17:04:52,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-09-24 17:04:52,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-24 17:04:52,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-09-24 17:04:52,821 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 16 [2020-09-24 17:04:52,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:04:52,822 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-09-24 17:04:52,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 17:04:52,822 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-09-24 17:04:52,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-24 17:04:52,824 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:04:52,825 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:04:52,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:04:52,826 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:04:52,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:04:52,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1478812441, now seen corresponding path program 1 times [2020-09-24 17:04:52,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:04:52,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278129732] [2020-09-24 17:04:52,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:04:52,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:52,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:52,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:53,315 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:53,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 17:04:53,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:04:53,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 473 [2020-09-24 17:04:53,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:53,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:04:53,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 17:04:53,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 17:04:53,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:04:53,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:04:53,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:53,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:53,347 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:53,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:04:53,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:53,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:04:53,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:53,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:04:53,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:53,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:04:53,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:04:53,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 17:04:53,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:53,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:53,401 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:53,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 17:04:53,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:53,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-24 17:04:53,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:53,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:04:53,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:53,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 17:04:53,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:04:53,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:04:53,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:53,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:53,448 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:53,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:04:53,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:53,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 17:04:53,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:53,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:04:53,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:53,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:04:53,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:04:53,471 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 17:04:53,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278129732] [2020-09-24 17:04:53,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:04:53,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 17:04:53,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721377470] [2020-09-24 17:04:53,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 17:04:53,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:04:53,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 17:04:53,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 17:04:53,476 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 7 states. [2020-09-24 17:04:53,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:04:53,539 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-09-24 17:04:53,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 17:04:53,540 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-09-24 17:04:53,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:04:53,542 INFO L225 Difference]: With dead ends: 34 [2020-09-24 17:04:53,542 INFO L226 Difference]: Without dead ends: 28 [2020-09-24 17:04:53,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-24 17:04:53,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-24 17:04:53,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-24 17:04:53,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 17:04:53,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-09-24 17:04:53,563 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 24 [2020-09-24 17:04:53,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:04:53,563 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-09-24 17:04:53,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 17:04:53,563 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-09-24 17:04:53,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-24 17:04:53,565 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:04:53,565 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:04:53,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 17:04:53,566 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:04:53,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:04:53,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1463730447, now seen corresponding path program 2 times [2020-09-24 17:04:53,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:04:53,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56216811] [2020-09-24 17:04:53,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:04:53,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:53,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:53,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:54,061 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:54,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 17:04:54,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:04:54,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 484 [2020-09-24 17:04:54,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:54,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 17:04:54,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-24 17:04:54,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 17:04:54,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:04:54,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:04:54,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:54,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:54,088 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:54,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:04:54,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:54,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:04:54,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:54,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:04:54,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:54,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:04:54,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:04:54,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 17:04:54,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:54,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:54,168 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:54,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 17:04:54,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:54,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-24 17:04:54,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:54,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:04:54,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:54,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 17:04:54,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:04:54,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:04:54,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:54,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:54,234 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:54,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 17:04:54,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:54,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 17:04:54,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:54,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:04:54,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:54,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 17:04:54,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:04:54,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:04:54,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:54,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:54,276 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:54,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:04:54,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:54,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 17:04:54,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:54,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:04:54,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:54,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:04:54,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:04:54,298 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 17:04:54,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56216811] [2020-09-24 17:04:54,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:04:54,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 17:04:54,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891309029] [2020-09-24 17:04:54,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 17:04:54,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:04:54,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 17:04:54,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-24 17:04:54,301 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 9 states. [2020-09-24 17:04:54,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:04:54,377 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-09-24 17:04:54,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 17:04:54,377 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-09-24 17:04:54,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:04:54,379 INFO L225 Difference]: With dead ends: 39 [2020-09-24 17:04:54,379 INFO L226 Difference]: Without dead ends: 33 [2020-09-24 17:04:54,380 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-09-24 17:04:54,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-24 17:04:54,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-09-24 17:04:54,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-24 17:04:54,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-09-24 17:04:54,387 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 32 [2020-09-24 17:04:54,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:04:54,387 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-09-24 17:04:54,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 17:04:54,388 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-09-24 17:04:54,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-24 17:04:54,389 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:04:54,389 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:04:54,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 17:04:54,390 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:04:54,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:04:54,390 INFO L82 PathProgramCache]: Analyzing trace with hash 23346727, now seen corresponding path program 3 times [2020-09-24 17:04:54,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:04:54,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [870857764] [2020-09-24 17:04:54,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:04:54,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:54,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:54,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:55,212 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:55,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 17:04:55,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:04:55,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 811 [2020-09-24 17:04:55,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:55,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 17:04:55,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-24 17:04:55,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 17:04:55,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:04:55,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:04:55,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:55,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:55,239 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:55,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:04:55,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:55,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:04:55,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:55,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:04:55,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:55,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:04:55,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:04:55,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 17:04:55,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:55,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:55,358 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:55,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 17:04:55,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:55,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-24 17:04:55,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:55,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:04:55,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:55,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 17:04:55,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:04:55,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:04:55,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:55,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:55,464 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:55,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 17:04:55,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:55,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-24 17:04:55,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:55,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:04:55,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:55,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 17:04:55,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:04:55,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:04:55,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:55,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:55,535 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:55,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 17:04:55,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:55,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 17:04:55,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:55,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:04:55,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:55,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 17:04:55,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:04:55,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:04:55,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:55,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:55,585 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:55,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:04:55,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:55,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 17:04:55,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:55,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:04:55,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:55,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:04:55,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:04:55,607 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-24 17:04:55,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [870857764] [2020-09-24 17:04:55,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:04:55,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 17:04:55,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938703654] [2020-09-24 17:04:55,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 17:04:55,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:04:55,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 17:04:55,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-24 17:04:55,611 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 11 states. [2020-09-24 17:04:55,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:04:55,702 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2020-09-24 17:04:55,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 17:04:55,703 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-09-24 17:04:55,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:04:55,704 INFO L225 Difference]: With dead ends: 44 [2020-09-24 17:04:55,705 INFO L226 Difference]: Without dead ends: 38 [2020-09-24 17:04:55,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-09-24 17:04:55,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-24 17:04:55,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-24 17:04:55,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-24 17:04:55,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-09-24 17:04:55,713 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 40 [2020-09-24 17:04:55,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:04:55,713 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-09-24 17:04:55,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 17:04:55,713 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-09-24 17:04:55,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 17:04:55,715 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:04:55,715 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:04:55,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 17:04:55,716 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:04:55,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:04:55,716 INFO L82 PathProgramCache]: Analyzing trace with hash -649675855, now seen corresponding path program 4 times [2020-09-24 17:04:55,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:04:55,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [192055660] [2020-09-24 17:04:55,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:04:55,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:55,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:55,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:57,130 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:57,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 17:04:57,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:04:57,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1402 [2020-09-24 17:04:57,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:57,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 17:04:57,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-24 17:04:57,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 17:04:57,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:04:57,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:04:57,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:57,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:57,165 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:57,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:04:57,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:57,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:04:57,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:57,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:04:57,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:57,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:04:57,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:04:57,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 17:04:57,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:57,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:57,345 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:57,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 17:04:57,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:57,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-24 17:04:57,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:57,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:04:57,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:57,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 17:04:57,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:04:57,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:04:57,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:57,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:57,492 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:57,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 17:04:57,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:57,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-24 17:04:57,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:57,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:04:57,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:57,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 17:04:57,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:04:57,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:04:57,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:57,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:57,589 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:57,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 17:04:57,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:57,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-24 17:04:57,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:57,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:04:57,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:57,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 17:04:57,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:04:57,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:04:57,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:57,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:57,656 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:57,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 17:04:57,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:57,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 17:04:57,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:57,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:04:57,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:57,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 17:04:57,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:04:57,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:04:57,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:57,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:57,702 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:57,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:04:57,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:57,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 17:04:57,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:57,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:04:57,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:57,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:04:57,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:04:57,734 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-24 17:04:57,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [192055660] [2020-09-24 17:04:57,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:04:57,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 17:04:57,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113447544] [2020-09-24 17:04:57,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 17:04:57,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:04:57,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 17:04:57,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-24 17:04:57,737 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 13 states. [2020-09-24 17:04:57,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:04:57,867 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-09-24 17:04:57,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 17:04:57,868 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2020-09-24 17:04:57,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:04:57,869 INFO L225 Difference]: With dead ends: 49 [2020-09-24 17:04:57,870 INFO L226 Difference]: Without dead ends: 43 [2020-09-24 17:04:57,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2020-09-24 17:04:57,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-24 17:04:57,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-09-24 17:04:57,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-24 17:04:57,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-09-24 17:04:57,878 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 48 [2020-09-24 17:04:57,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:04:57,878 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-09-24 17:04:57,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 17:04:57,879 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-09-24 17:04:57,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-24 17:04:57,880 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:04:57,881 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:04:57,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 17:04:57,881 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:04:57,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:04:57,881 INFO L82 PathProgramCache]: Analyzing trace with hash 899977063, now seen corresponding path program 5 times [2020-09-24 17:04:57,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:04:57,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464740975] [2020-09-24 17:04:57,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:04:57,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:57,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:58,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:59,939 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:59,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 17:04:59,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:04:59,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2046 [2020-09-24 17:04:59,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:59,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 17:04:59,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-24 17:04:59,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 17:04:59,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-24 17:04:59,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:04:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:59,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:59,977 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:59,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:04:59,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:59,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:04:59,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:59,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:04:59,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:59,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:04:59,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:04:59,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 17:04:59,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:59,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:00,217 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:00,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 17:05:00,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:00,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-09-24 17:05:00,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:00,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 17:05:00,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:00,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-24 17:05:00,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:00,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:00,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:00,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:00,407 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:00,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 17:05:00,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:00,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-09-24 17:05:00,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:00,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:05:00,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:00,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 17:05:00,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:00,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:00,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:00,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:00,545 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:00,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 17:05:00,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:00,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-24 17:05:00,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:00,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:05:00,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:00,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 17:05:00,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:00,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:00,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:00,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:00,644 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:00,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 17:05:00,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:00,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-24 17:05:00,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:00,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:05:00,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:00,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 17:05:00,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:00,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:00,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:00,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:00,711 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:00,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 17:05:00,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:00,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 17:05:00,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:00,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:05:00,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:00,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 17:05:00,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:00,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:00,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:00,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:00,759 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:00,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:05:00,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:00,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 17:05:00,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:00,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:05:00,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:00,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:05:00,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:00,789 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-24 17:05:00,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464740975] [2020-09-24 17:05:00,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:05:00,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 17:05:00,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994374697] [2020-09-24 17:05:00,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 17:05:00,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:00,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 17:05:00,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-09-24 17:05:00,792 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 15 states. [2020-09-24 17:05:00,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:00,922 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2020-09-24 17:05:00,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 17:05:00,923 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-09-24 17:05:00,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:00,924 INFO L225 Difference]: With dead ends: 54 [2020-09-24 17:05:00,924 INFO L226 Difference]: Without dead ends: 48 [2020-09-24 17:05:00,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2020-09-24 17:05:00,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-24 17:05:00,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-24 17:05:00,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-24 17:05:00,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2020-09-24 17:05:00,932 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 56 [2020-09-24 17:05:00,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:00,932 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2020-09-24 17:05:00,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 17:05:00,932 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2020-09-24 17:05:00,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-24 17:05:00,934 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:00,934 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:05:00,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 17:05:00,934 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:00,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:00,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1000802417, now seen corresponding path program 6 times [2020-09-24 17:05:00,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:00,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640884452] [2020-09-24 17:05:00,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:00,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:00,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:01,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:03,588 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:03,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 17:05:03,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:05:03,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2640 [2020-09-24 17:05:03,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:03,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 17:05:03,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 17:05:03,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 17:05:03,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:03,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:03,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:03,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:03,607 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:03,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:05:03,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:03,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:05:03,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:03,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:03,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:03,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:03,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:03,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 17:05:03,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:03,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:03,891 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:03,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 17:05:03,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:03,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-09-24 17:05:03,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:03,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 17:05:03,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:05:03,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 17:05:03,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:03,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:03,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:04,160 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:04,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 17:05:04,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:04,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-09-24 17:05:04,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:04,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 17:05:04,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:04,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 17:05:04,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:04,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:04,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:04,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:04,392 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:04,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 17:05:04,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:04,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-09-24 17:05:04,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:04,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 17:05:04,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:04,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 17:05:04,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:04,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:04,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:04,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:04,529 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:04,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 17:05:04,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:04,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-24 17:05:04,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:04,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:05:04,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:04,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 17:05:04,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:04,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:04,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:04,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:04,630 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:04,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 17:05:04,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:04,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-24 17:05:04,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:04,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:05:04,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:04,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 17:05:04,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:04,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:04,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:04,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:04,689 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:04,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 17:05:04,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:04,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 17:05:04,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:04,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:05:04,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:04,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 17:05:04,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:04,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:04,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:04,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:04,727 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:04,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:05:04,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:04,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 17:05:04,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:04,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:05:04,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:04,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 17:05:04,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:04,765 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 15 proven. 87 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-09-24 17:05:04,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640884452] [2020-09-24 17:05:04,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:05:04,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 17:05:04,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079599893] [2020-09-24 17:05:04,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 17:05:04,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:04,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 17:05:04,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 17:05:04,768 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 12 states. [2020-09-24 17:05:04,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:04,879 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-09-24 17:05:04,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 17:05:04,879 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 64 [2020-09-24 17:05:04,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:04,881 INFO L225 Difference]: With dead ends: 59 [2020-09-24 17:05:04,881 INFO L226 Difference]: Without dead ends: 53 [2020-09-24 17:05:04,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2020-09-24 17:05:04,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-24 17:05:04,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-24 17:05:04,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-24 17:05:04,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2020-09-24 17:05:04,895 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 64 [2020-09-24 17:05:04,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:04,896 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2020-09-24 17:05:04,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 17:05:04,896 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2020-09-24 17:05:04,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-24 17:05:04,900 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:04,900 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:05:04,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 17:05:04,901 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:04,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:04,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1977618599, now seen corresponding path program 7 times [2020-09-24 17:05:04,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:04,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951842070] [2020-09-24 17:05:04,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:04,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:04,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:05,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:08,466 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:08,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-24 17:05:08,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:05:08,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3553 [2020-09-24 17:05:08,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:08,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 17:05:08,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 17:05:08,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 17:05:08,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:08,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:08,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:08,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:08,489 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:08,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:05:08,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:08,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:05:08,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:08,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:08,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:08,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:08,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:08,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 17:05:08,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:08,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:08,877 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:08,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 17:05:08,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:08,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 374 [2020-09-24 17:05:08,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:08,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 17:05:08,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:05:08,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 17:05:08,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:08,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:08,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:09,246 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:09,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 17:05:09,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:09,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-09-24 17:05:09,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:09,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 17:05:09,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:09,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 17:05:09,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:09,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:09,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:09,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:09,499 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:09,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 17:05:09,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:09,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-09-24 17:05:09,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:09,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 17:05:09,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:09,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 17:05:09,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:09,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:09,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:09,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:09,695 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:09,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 17:05:09,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:09,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-09-24 17:05:09,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:09,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 17:05:09,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:09,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 17:05:09,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:09,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:09,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:09,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:09,833 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:09,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 17:05:09,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:09,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-24 17:05:09,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:09,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:05:09,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:09,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 17:05:09,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:09,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:09,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:09,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:09,936 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:09,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 17:05:09,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:09,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-24 17:05:09,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:09,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:05:09,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:09,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 17:05:09,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:09,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:09,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:09,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:09,999 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:09,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 17:05:10,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:10,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 17:05:10,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:10,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:05:10,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:10,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 17:05:10,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:10,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:10,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:10,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:10,024 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:10,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:05:10,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:10,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 17:05:10,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:10,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:05:10,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:10,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 17:05:10,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:10,061 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 8 proven. 139 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-09-24 17:05:10,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1951842070] [2020-09-24 17:05:10,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:05:10,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 17:05:10,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809786409] [2020-09-24 17:05:10,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 17:05:10,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:10,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 17:05:10,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-09-24 17:05:10,064 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 13 states. [2020-09-24 17:05:10,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:10,185 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2020-09-24 17:05:10,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 17:05:10,186 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 72 [2020-09-24 17:05:10,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:10,187 INFO L225 Difference]: With dead ends: 64 [2020-09-24 17:05:10,187 INFO L226 Difference]: Without dead ends: 58 [2020-09-24 17:05:10,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=272, Unknown=0, NotChecked=0, Total=420 [2020-09-24 17:05:10,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-24 17:05:10,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-24 17:05:10,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-24 17:05:10,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-09-24 17:05:10,196 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 72 [2020-09-24 17:05:10,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:10,196 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-09-24 17:05:10,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 17:05:10,196 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-09-24 17:05:10,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-24 17:05:10,197 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:10,197 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:05:10,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 17:05:10,198 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:10,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:10,198 INFO L82 PathProgramCache]: Analyzing trace with hash 555623729, now seen corresponding path program 8 times [2020-09-24 17:05:10,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:10,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117614724] [2020-09-24 17:05:10,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:10,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:10,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:10,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:14,648 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:14,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-09-24 17:05:14,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:05:14,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4436 [2020-09-24 17:05:14,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:14,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 17:05:14,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-24 17:05:14,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-24 17:05:14,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:14,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:14,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:14,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:14,675 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:14,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:05:14,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:14,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:05:14,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:14,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:14,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:14,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:14,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:14,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 17:05:14,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:14,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:15,039 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:15,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 17:05:15,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:15,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-09-24 17:05:15,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:15,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 17:05:15,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:15,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 17:05:15,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:15,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:15,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:15,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:15,415 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:15,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 17:05:15,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:15,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 338 [2020-09-24 17:05:15,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:15,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 17:05:15,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:15,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 17:05:15,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:15,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:15,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:15,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:15,714 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:15,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 17:05:15,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:15,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-09-24 17:05:15,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:15,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 17:05:15,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:15,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-24 17:05:15,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:15,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:15,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:15,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:15,934 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:15,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 17:05:15,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:15,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-09-24 17:05:15,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:15,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 17:05:15,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:15,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-24 17:05:15,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:15,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:15,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:15,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:16,090 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:16,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 17:05:16,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:16,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-09-24 17:05:16,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:16,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:05:16,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:16,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 17:05:16,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:16,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:16,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:16,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:16,212 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:16,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 17:05:16,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:16,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-24 17:05:16,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:16,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:05:16,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:16,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 17:05:16,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:16,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:16,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:16,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:16,312 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:16,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 17:05:16,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:16,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-24 17:05:16,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:16,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:05:16,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:16,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 17:05:16,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:16,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:16,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:16,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:16,396 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:16,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 17:05:16,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:16,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 17:05:16,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:16,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:05:16,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:16,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 17:05:16,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:16,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:16,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:16,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:16,454 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:16,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:05:16,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:16,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 17:05:16,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:16,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:05:16,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:16,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:05:16,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:16,502 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-09-24 17:05:16,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117614724] [2020-09-24 17:05:16,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:05:16,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-24 17:05:16,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511402381] [2020-09-24 17:05:16,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-24 17:05:16,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:16,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-24 17:05:16,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-09-24 17:05:16,505 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 21 states. [2020-09-24 17:05:16,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:16,697 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2020-09-24 17:05:16,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-24 17:05:16,697 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 80 [2020-09-24 17:05:16,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:16,699 INFO L225 Difference]: With dead ends: 69 [2020-09-24 17:05:16,699 INFO L226 Difference]: Without dead ends: 63 [2020-09-24 17:05:16,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=223, Invalid=647, Unknown=0, NotChecked=0, Total=870 [2020-09-24 17:05:16,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-24 17:05:16,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-09-24 17:05:16,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-24 17:05:16,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2020-09-24 17:05:16,713 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 80 [2020-09-24 17:05:16,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:16,714 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2020-09-24 17:05:16,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-24 17:05:16,714 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2020-09-24 17:05:16,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-24 17:05:16,715 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:16,715 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:05:16,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 17:05:16,715 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:16,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:16,716 INFO L82 PathProgramCache]: Analyzing trace with hash 777699815, now seen corresponding path program 9 times [2020-09-24 17:05:16,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:16,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967930074] [2020-09-24 17:05:16,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:16,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:16,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:16,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:22,069 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:22,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-24 17:05:22,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:05:22,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5343 [2020-09-24 17:05:22,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:22,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 17:05:22,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 17:05:22,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 17:05:22,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:22,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:22,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:22,086 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:22,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:05:22,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:22,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:05:22,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:22,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:22,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:22,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:22,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:22,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 17:05:22,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:22,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:22,550 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:22,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 17:05:22,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:22,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 451 [2020-09-24 17:05:22,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:22,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 17:05:22,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:05:22,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-24 17:05:22,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:22,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:22,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:22,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:22,958 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:22,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 17:05:22,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:22,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-09-24 17:05:22,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:22,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 17:05:22,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:22,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-24 17:05:22,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:22,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:22,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:23,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:23,305 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:23,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 17:05:23,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:23,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-09-24 17:05:23,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:23,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 17:05:23,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:23,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 17:05:23,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:23,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:23,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:23,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:23,574 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:23,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 17:05:23,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:23,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-09-24 17:05:23,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:23,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 17:05:23,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:23,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 17:05:23,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:23,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:23,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:23,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:23,793 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:23,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 17:05:23,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:23,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-09-24 17:05:23,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:23,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 17:05:23,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:23,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 17:05:23,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:23,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:23,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:23,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:23,969 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:23,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 17:05:23,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:23,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-09-24 17:05:23,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:23,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 17:05:23,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:23,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 17:05:23,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:23,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:23,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:23,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:24,092 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:24,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 17:05:24,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:24,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-24 17:05:24,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:24,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:05:24,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:24,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 17:05:24,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:24,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:24,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:24,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:24,174 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:24,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 17:05:24,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:24,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-24 17:05:24,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:24,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:05:24,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:24,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 17:05:24,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:24,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:24,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:24,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:24,230 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:24,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 17:05:24,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:24,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 17:05:24,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:24,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:05:24,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:24,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 17:05:24,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:24,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:24,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:24,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:24,292 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:24,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:05:24,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:24,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:05:24,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:24,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:05:24,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:24,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 17:05:24,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:24,350 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 14 proven. 234 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-09-24 17:05:24,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967930074] [2020-09-24 17:05:24,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:05:24,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 17:05:24,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190823288] [2020-09-24 17:05:24,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 17:05:24,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:24,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 17:05:24,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2020-09-24 17:05:24,353 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 16 states. [2020-09-24 17:05:24,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:24,544 INFO L93 Difference]: Finished difference Result 74 states and 75 transitions. [2020-09-24 17:05:24,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 17:05:24,544 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 88 [2020-09-24 17:05:24,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:24,545 INFO L225 Difference]: With dead ends: 74 [2020-09-24 17:05:24,546 INFO L226 Difference]: Without dead ends: 68 [2020-09-24 17:05:24,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=229, Invalid=421, Unknown=0, NotChecked=0, Total=650 [2020-09-24 17:05:24,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-24 17:05:24,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-09-24 17:05:24,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-24 17:05:24,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2020-09-24 17:05:24,554 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 88 [2020-09-24 17:05:24,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:24,555 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2020-09-24 17:05:24,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 17:05:24,555 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2020-09-24 17:05:24,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-09-24 17:05:24,556 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:24,556 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:05:24,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 17:05:24,556 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:24,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:24,557 INFO L82 PathProgramCache]: Analyzing trace with hash 2145915377, now seen corresponding path program 10 times [2020-09-24 17:05:24,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:24,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692387123] [2020-09-24 17:05:24,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:24,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:24,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:24,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:31,527 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:31,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-24 17:05:31,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:05:31,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6955 [2020-09-24 17:05:31,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:31,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-24 17:05:31,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-24 17:05:31,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-24 17:05:31,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:31,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:31,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:31,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:31,550 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:31,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:05:31,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:31,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:05:31,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:31,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:31,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:31,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:31,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:31,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 17:05:31,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:31,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:32,085 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:32,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-24 17:05:32,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:32,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 522 [2020-09-24 17:05:32,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:32,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 17:05:32,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:32,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-24 17:05:32,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:32,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:32,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:32,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:32,566 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:32,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 17:05:32,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:32,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 440 [2020-09-24 17:05:32,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:32,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 17:05:32,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:32,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 17:05:32,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:32,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:32,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:32,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:32,945 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:32,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 17:05:32,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:32,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-09-24 17:05:32,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:32,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 17:05:32,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:32,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 17:05:32,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:32,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:32,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:32,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:33,260 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:33,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 17:05:33,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:33,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-09-24 17:05:33,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:33,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 17:05:33,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:33,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 17:05:33,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:33,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:33,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:33,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:33,513 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:33,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 17:05:33,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:33,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-09-24 17:05:33,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:33,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 17:05:33,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:33,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-24 17:05:33,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:33,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:33,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:33,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:33,706 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:33,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 17:05:33,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:33,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-24 17:05:33,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:33,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 17:05:33,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:33,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-24 17:05:33,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:33,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:33,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:33,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:33,848 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:33,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 17:05:33,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:33,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-24 17:05:33,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:33,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:05:33,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:33,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 17:05:33,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:33,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:33,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:33,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:33,974 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:33,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 17:05:33,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:33,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-24 17:05:33,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:33,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:05:33,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:33,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 17:05:33,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:34,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:34,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:34,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:34,072 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:34,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 17:05:34,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:34,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-24 17:05:34,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:34,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:05:34,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:34,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 17:05:34,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:34,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:34,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:34,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:34,167 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:34,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 17:05:34,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:34,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 17:05:34,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:34,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:05:34,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:34,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 17:05:34,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:34,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:34,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:34,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:34,250 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:34,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:05:34,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:34,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 17:05:34,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:34,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:05:34,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:34,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:05:34,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:34,310 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-09-24 17:05:34,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692387123] [2020-09-24 17:05:34,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:05:34,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-24 17:05:34,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044950160] [2020-09-24 17:05:34,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-24 17:05:34,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:34,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-24 17:05:34,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2020-09-24 17:05:34,316 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand 25 states. [2020-09-24 17:05:34,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:34,561 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2020-09-24 17:05:34,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-24 17:05:34,561 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 96 [2020-09-24 17:05:34,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:34,562 INFO L225 Difference]: With dead ends: 79 [2020-09-24 17:05:34,563 INFO L226 Difference]: Without dead ends: 73 [2020-09-24 17:05:34,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=326, Invalid=934, Unknown=0, NotChecked=0, Total=1260 [2020-09-24 17:05:34,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-09-24 17:05:34,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-09-24 17:05:34,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-24 17:05:34,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2020-09-24 17:05:34,571 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 96 [2020-09-24 17:05:34,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:34,572 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2020-09-24 17:05:34,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-24 17:05:34,572 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2020-09-24 17:05:34,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-24 17:05:34,573 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:34,573 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:05:34,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 17:05:34,573 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:34,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:34,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1180214055, now seen corresponding path program 11 times [2020-09-24 17:05:34,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:34,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852395183] [2020-09-24 17:05:34,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:34,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:34,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:34,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking...