/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 SequenceOfStatements --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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.3.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 18:42:15,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 18:42:15,160 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 18:42:15,192 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 18:42:15,193 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 18:42:15,201 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 18:42:15,203 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 18:42:15,207 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 18:42:15,210 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 18:42:15,213 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 18:42:15,214 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 18:42:15,216 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 18:42:15,216 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 18:42:15,219 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 18:42:15,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 18:42:15,225 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 18:42:15,226 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 18:42:15,227 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 18:42:15,229 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 18:42:15,237 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 18:42:15,239 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 18:42:15,240 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 18:42:15,241 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 18:42:15,242 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 18:42:15,257 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 18:42:15,257 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 18:42:15,258 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 18:42:15,259 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 18:42:15,259 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 18:42:15,260 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 18:42:15,265 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 18:42:15,266 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 18:42:15,267 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 18:42:15,267 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 18:42:15,271 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 18:42:15,271 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 18:42:15,272 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 18:42:15,272 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 18:42:15,272 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 18:42:15,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 18:42:15,274 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 18:42:15,275 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 [2020-10-12 18:42:15,320 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 18:42:15,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 18:42:15,321 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 18:42:15,322 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 18:42:15,322 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 18:42:15,322 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 18:42:15,322 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 18:42:15,323 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 18:42:15,323 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 18:42:15,323 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 18:42:15,323 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 18:42:15,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 18:42:15,323 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 18:42:15,324 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 18:42:15,324 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 18:42:15,324 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 18:42:15,324 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 18:42:15,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 18:42:15,325 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 18:42:15,325 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 18:42:15,325 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 18:42:15,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 18:42:15,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 18:42:15,326 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 18:42:15,326 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 18:42:15,326 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 18:42:15,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 18:42:15,326 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 18:42:15,327 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 18:42:15,327 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 -> SequenceOfStatements 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;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 18:42:15,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 18:42:15,626 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 18:42:15,629 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 18:42:15,631 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 18:42:15,632 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 18:42:15,633 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.3.ufo.BOUNDED-6.pals.c [2020-10-12 18:42:15,698 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3bf183e87/5e525baccd7c4bce97847c30f93ffe46/FLAG8e3599a70 [2020-10-12 18:42:16,190 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 18:42:16,191 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_lcr.3.ufo.BOUNDED-6.pals.c [2020-10-12 18:42:16,201 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3bf183e87/5e525baccd7c4bce97847c30f93ffe46/FLAG8e3599a70 [2020-10-12 18:42:16,571 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3bf183e87/5e525baccd7c4bce97847c30f93ffe46 [2020-10-12 18:42:16,580 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 18:42:16,582 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 18:42:16,583 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 18:42:16,583 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 18:42:16,587 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 18:42:16,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:42:16" (1/1) ... [2020-10-12 18:42:16,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60cc7f1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:42:16, skipping insertion in model container [2020-10-12 18:42:16,592 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:42:16" (1/1) ... [2020-10-12 18:42:16,600 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 18:42:16,655 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 18:42:16,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 18:42:16,869 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 18:42:17,000 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 18:42:17,024 INFO L208 MainTranslator]: Completed translation [2020-10-12 18:42:17,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:42:17 WrapperNode [2020-10-12 18:42:17,027 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 18:42:17,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 18:42:17,028 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 18:42:17,028 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 18:42:17,041 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:42:17" (1/1) ... [2020-10-12 18:42:17,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:42:17" (1/1) ... [2020-10-12 18:42:17,050 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:42:17" (1/1) ... [2020-10-12 18:42:17,050 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:42:17" (1/1) ... [2020-10-12 18:42:17,060 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:42:17" (1/1) ... [2020-10-12 18:42:17,082 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:42:17" (1/1) ... [2020-10-12 18:42:17,084 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:42:17" (1/1) ... [2020-10-12 18:42:17,091 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 18:42:17,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 18:42:17,094 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 18:42:17,094 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 18:42:17,095 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:42:17" (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 [2020-10-12 18:42:17,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 18:42:17,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 18:42:17,166 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-12 18:42:17,166 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-12 18:42:17,167 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-12 18:42:17,167 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-12 18:42:17,167 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-12 18:42:17,167 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 18:42:17,167 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-12 18:42:17,168 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 18:42:17,168 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 18:42:17,168 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 18:42:17,168 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 18:42:17,168 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 18:42:17,168 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 18:42:17,169 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 18:42:17,169 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 18:42:17,169 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 18:42:17,169 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 18:42:17,169 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 18:42:17,169 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 18:42:17,170 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 18:42:17,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 18:42:17,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 18:42:17,677 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 18:42:17,677 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 18:42:17,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:42:17 BoogieIcfgContainer [2020-10-12 18:42:17,683 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 18:42:17,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 18:42:17,685 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 18:42:17,689 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 18:42:17,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 06:42:16" (1/3) ... [2020-10-12 18:42:17,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d3b63d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:42:17, skipping insertion in model container [2020-10-12 18:42:17,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:42:17" (2/3) ... [2020-10-12 18:42:17,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d3b63d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:42:17, skipping insertion in model container [2020-10-12 18:42:17,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:42:17" (3/3) ... [2020-10-12 18:42:17,693 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals.c [2020-10-12 18:42:17,704 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 18:42:17,713 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 18:42:17,726 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 18:42:17,750 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 18:42:17,751 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 18:42:17,751 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 18:42:17,751 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 18:42:17,751 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 18:42:17,751 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 18:42:17,752 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 18:42:17,752 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 18:42:17,774 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2020-10-12 18:42:17,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-12 18:42:17,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:42:17,785 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:42:17,786 INFO L427 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:42:17,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:42:17,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1275961039, now seen corresponding path program 1 times [2020-10-12 18:42:17,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:42:17,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002191140] [2020-10-12 18:42:17,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:42:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:18,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:18,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:42:18,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-12 18:42:18,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:42:18,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-10-12 18:42:18,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:42:18,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:42:18,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 18:42:18,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:42:18,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 18:42:18,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:42:18,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:18,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:18,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:42:18,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:42:18,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:42:18,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 18:42:18,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:42:18,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:42:18,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:42:18,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:42:18,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 18 [2020-10-12 18:42:18,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:42:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:18,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:18,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:42:18,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:42:18,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:42:18,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 18:42:18,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:42:18,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:42:18,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:42:18,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:42:18,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:42:18,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-12 18:42:18,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:18,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:18,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:42:18,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:42:18,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:42:18,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 18:42:18,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:42:18,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:42:18,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 18:42:18,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:42:18,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:42:18,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 18:42:18,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:18,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:18,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:42:18,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:42:18,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:42:18,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 18:42:18,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:42:18,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:42:18,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 18:42:18,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:42:18,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:42:18,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 18:42:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:18,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:18,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:42:18,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:42:18,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:42:18,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 18:42:18,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:42:18,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:42:18,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 18:42:18,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:42:18,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:42:18,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 18:42:18,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:18,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:18,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:42:18,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:42:18,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:42:18,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 18:42:18,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:42:18,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:42:18,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 18:42:18,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:42:18,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:42:18,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:42:18,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002191140] [2020-10-12 18:42:18,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:42:18,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 18:42:18,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640890620] [2020-10-12 18:42:18,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 18:42:18,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:42:18,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 18:42:18,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 18:42:18,728 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 6 states. [2020-10-12 18:42:19,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:42:19,211 INFO L93 Difference]: Finished difference Result 149 states and 211 transitions. [2020-10-12 18:42:19,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 18:42:19,213 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-10-12 18:42:19,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:42:19,225 INFO L225 Difference]: With dead ends: 149 [2020-10-12 18:42:19,226 INFO L226 Difference]: Without dead ends: 84 [2020-10-12 18:42:19,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-12 18:42:19,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-12 18:42:19,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-10-12 18:42:19,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-12 18:42:19,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 120 transitions. [2020-10-12 18:42:19,285 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 120 transitions. Word has length 49 [2020-10-12 18:42:19,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:42:19,285 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 120 transitions. [2020-10-12 18:42:19,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 18:42:19,286 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 120 transitions. [2020-10-12 18:42:19,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-12 18:42:19,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:42:19,289 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:42:19,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 18:42:19,289 INFO L427 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:42:19,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:42:19,290 INFO L82 PathProgramCache]: Analyzing trace with hash 881594253, now seen corresponding path program 1 times [2020-10-12 18:42:19,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:42:19,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [757855746] [2020-10-12 18:42:19,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:42:19,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:19,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:19,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:42:19,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-12 18:42:19,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:42:19,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-12 18:42:19,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:42:19,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:42:19,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:42:19,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:42:19,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:42:19,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:42:19,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:19,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:19,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:42:19,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:42:19,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:42:19,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 18:42:19,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:42:19,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:42:19,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:42:19,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:42:19,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:42:19,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:42:19,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:19,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:19,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:42:19,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:42:19,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:42:19,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:42:19,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:42:19,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:42:19,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:42:19,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:42:19,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:42:19,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-12 18:42:19,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:19,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:19,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:42:19,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:42:19,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:42:19,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 18:42:19,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:42:19,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:42:19,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 18:42:19,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:42:19,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:42:19,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 18:42:19,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:19,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:19,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:42:19,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:42:19,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:42:19,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 18:42:19,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:42:19,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:42:19,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 18:42:19,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:42:19,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:42:19,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 18:42:19,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:19,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:19,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:42:19,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:42:19,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:42:19,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 18:42:19,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:42:19,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:42:19,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 18:42:19,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:42:19,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:42:19,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 18:42:19,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:19,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:19,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:42:19,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:42:19,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:42:19,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:42:19,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:42:19,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:42:19,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 18:42:19,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:42:19,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:42:19,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:42:19,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [757855746] [2020-10-12 18:42:19,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:42:19,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 18:42:19,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436589693] [2020-10-12 18:42:19,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 18:42:19,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:42:19,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 18:42:19,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-12 18:42:19,943 INFO L87 Difference]: Start difference. First operand 84 states and 120 transitions. Second operand 10 states. [2020-10-12 18:42:20,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:42:20,908 INFO L93 Difference]: Finished difference Result 153 states and 214 transitions. [2020-10-12 18:42:20,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 18:42:20,909 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 49 [2020-10-12 18:42:20,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:42:20,912 INFO L225 Difference]: With dead ends: 153 [2020-10-12 18:42:20,913 INFO L226 Difference]: Without dead ends: 93 [2020-10-12 18:42:20,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-12 18:42:20,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-12 18:42:20,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 84. [2020-10-12 18:42:20,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-12 18:42:20,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 104 transitions. [2020-10-12 18:42:20,932 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 104 transitions. Word has length 49 [2020-10-12 18:42:20,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:42:20,933 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 104 transitions. [2020-10-12 18:42:20,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 18:42:20,933 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 104 transitions. [2020-10-12 18:42:20,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 18:42:20,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:42:20,935 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:42:20,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 18:42:20,936 INFO L427 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:42:20,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:42:20,936 INFO L82 PathProgramCache]: Analyzing trace with hash -475670054, now seen corresponding path program 1 times [2020-10-12 18:42:20,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:42:20,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1290429787] [2020-10-12 18:42:20,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:42:20,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:21,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:21,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:21,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:21,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:25,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:42:25,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 18:42:25,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:42:25,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4147 [2020-10-12 18:42:25,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:42:25,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:42:25,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:42:25,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 18:42:25,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:42:25,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:42:25,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:25,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:25,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:42:25,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:42:25,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:42:25,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 18:42:25,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:42:25,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:42:25,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:42:25,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:42:25,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:42:25,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:42:25,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:25,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:25,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:42:25,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:42:25,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:42:25,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 18:42:25,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:42:25,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:42:25,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:42:25,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 18:42:25,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:42:25,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 18:42:25,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:25,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:25,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:42:25,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:42:25,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:42:25,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 18:42:25,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:42:25,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:42:25,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:42:25,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:42:25,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:42:25,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 18:42:25,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:25,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:25,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:42:25,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:42:25,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:42:25,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 18:42:25,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:42:25,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:42:25,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:42:25,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:42:25,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:42:25,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-12 18:42:25,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:25,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:25,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:42:25,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:42:25,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:42:25,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 18:42:25,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:42:25,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:42:25,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:42:25,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:42:25,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:42:25,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-12 18:42:25,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:25,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:25,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:42:25,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:42:25,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:42:25,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:42:25,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:42:25,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:42:25,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 18:42:25,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 18:42:25,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:42:25,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:42:25,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1290429787] [2020-10-12 18:42:25,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:42:25,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 18:42:25,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611249885] [2020-10-12 18:42:25,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 18:42:25,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:42:25,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 18:42:25,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-12 18:42:25,552 INFO L87 Difference]: Start difference. First operand 84 states and 104 transitions. Second operand 14 states. [2020-10-12 18:42:29,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:42:29,040 INFO L93 Difference]: Finished difference Result 474 states and 642 transitions. [2020-10-12 18:42:29,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-12 18:42:29,040 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 64 [2020-10-12 18:42:29,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:42:29,048 INFO L225 Difference]: With dead ends: 474 [2020-10-12 18:42:29,049 INFO L226 Difference]: Without dead ends: 420 [2020-10-12 18:42:29,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=579, Invalid=1971, Unknown=0, NotChecked=0, Total=2550 [2020-10-12 18:42:29,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2020-10-12 18:42:29,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 408. [2020-10-12 18:42:29,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 408 states. [2020-10-12 18:42:29,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 553 transitions. [2020-10-12 18:42:29,111 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 553 transitions. Word has length 64 [2020-10-12 18:42:29,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:42:29,112 INFO L479 AbstractCegarLoop]: Abstraction has 408 states and 553 transitions. [2020-10-12 18:42:29,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 18:42:29,112 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 553 transitions. [2020-10-12 18:42:29,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-12 18:42:29,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:42:29,116 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:42:29,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 18:42:29,116 INFO L427 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:42:29,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:42:29,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1058501526, now seen corresponding path program 1 times [2020-10-12 18:42:29,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:42:29,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1585740723] [2020-10-12 18:42:29,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:42:29,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:29,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:29,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:29,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:29,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:29,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:33,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:34,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:42:34,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 18:42:34,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 18:42:34,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 18:42:34,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:42:34,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:42:34,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-12 18:42:34,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:42:34,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:42:34,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:42:34,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:34,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:34,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:42:34,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:42:34,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:42:34,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:42:34,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:42:34,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:42:34,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:42:34,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:42:34,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:42:34,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:42:34,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:34,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:34,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:42:34,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:42:34,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:42:34,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:42:34,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:42:34,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:42:34,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:42:34,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:42:34,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:42:34,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 18:42:34,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:34,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:34,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:42:34,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:42:34,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:42:34,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:42:34,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:42:34,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:42:34,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:42:34,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:42:34,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:42:34,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 18:42:34,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:34,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:34,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:42:34,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:42:34,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:42:34,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:42:34,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:42:34,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:42:34,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:42:34,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:42:34,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:42:34,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-12 18:42:34,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:34,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:34,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:42:34,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:42:34,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:42:34,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:42:34,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:42:34,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:42:34,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:42:34,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:42:34,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:42:34,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-12 18:42:34,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:34,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:34,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:34,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:42:34,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 18:42:34,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:42:34,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 18:42:34,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:42:34,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:42:34,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:42:34,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:42:34,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:42:34,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:42:34,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1585740723] [2020-10-12 18:42:34,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:42:34,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 18:42:34,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633357272] [2020-10-12 18:42:34,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 18:42:34,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:42:34,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 18:42:34,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-12 18:42:34,508 INFO L87 Difference]: Start difference. First operand 408 states and 553 transitions. Second operand 12 states. [2020-10-12 18:42:35,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:42:35,744 INFO L93 Difference]: Finished difference Result 485 states and 668 transitions. [2020-10-12 18:42:35,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 18:42:35,748 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2020-10-12 18:42:35,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:42:35,760 INFO L225 Difference]: With dead ends: 485 [2020-10-12 18:42:35,760 INFO L226 Difference]: Without dead ends: 483 [2020-10-12 18:42:35,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2020-10-12 18:42:35,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-10-12 18:42:35,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 444. [2020-10-12 18:42:35,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444 states. [2020-10-12 18:42:35,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 589 transitions. [2020-10-12 18:42:35,839 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 589 transitions. Word has length 66 [2020-10-12 18:42:35,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:42:35,839 INFO L479 AbstractCegarLoop]: Abstraction has 444 states and 589 transitions. [2020-10-12 18:42:35,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 18:42:35,840 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 589 transitions. [2020-10-12 18:42:35,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-12 18:42:35,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:42:35,842 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:42:35,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 18:42:35,843 INFO L427 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:42:35,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:42:35,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1948763314, now seen corresponding path program 1 times [2020-10-12 18:42:35,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:42:35,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [597406700] [2020-10-12 18:42:35,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:42:35,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:35,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:35,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:35,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:36,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:38,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:42:38,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 18:42:38,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:42:38,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2554 [2020-10-12 18:42:38,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:42:38,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:42:38,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:42:38,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 18:42:38,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:42:38,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:42:38,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:38,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:38,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:42:38,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:42:38,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:42:38,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:42:38,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:42:38,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:42:38,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:42:38,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:42:38,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:42:38,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:42:38,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:38,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:38,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:42:38,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:42:38,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:42:38,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 18:42:38,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:42:38,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:42:38,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:42:38,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 18:42:38,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:42:38,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 18:42:38,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:38,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:38,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:42:38,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:42:38,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:42:38,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 18:42:38,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:42:38,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:42:38,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:42:38,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:42:38,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:42:38,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 18:42:38,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:38,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:38,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:42:38,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:42:38,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:42:38,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:42:38,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:42:38,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:42:38,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:42:38,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:42:38,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:42:38,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-12 18:42:38,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:38,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:38,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:42:38,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:42:38,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:42:38,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 18:42:38,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:42:38,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:42:38,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:42:38,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:42:38,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:42:38,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-12 18:42:38,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:38,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:38,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:42:38,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 18:42:38,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:42:38,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 18:42:38,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:42:38,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:42:38,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 18:42:38,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 18:42:38,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:42:38,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:42:38,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [597406700] [2020-10-12 18:42:38,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:42:38,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 18:42:38,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651336015] [2020-10-12 18:42:38,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 18:42:38,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:42:38,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 18:42:38,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:42:38,794 INFO L87 Difference]: Start difference. First operand 444 states and 589 transitions. Second operand 13 states. [2020-10-12 18:42:39,987 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-10-12 18:42:40,621 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 84 [2020-10-12 18:42:41,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:42:41,814 INFO L93 Difference]: Finished difference Result 864 states and 1154 transitions. [2020-10-12 18:42:41,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-12 18:42:41,816 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 66 [2020-10-12 18:42:41,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:42:41,820 INFO L225 Difference]: With dead ends: 864 [2020-10-12 18:42:41,820 INFO L226 Difference]: Without dead ends: 450 [2020-10-12 18:42:41,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=355, Invalid=1127, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 18:42:41,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2020-10-12 18:42:41,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 444. [2020-10-12 18:42:41,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444 states. [2020-10-12 18:42:41,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 587 transitions. [2020-10-12 18:42:41,860 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 587 transitions. Word has length 66 [2020-10-12 18:42:41,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:42:41,860 INFO L479 AbstractCegarLoop]: Abstraction has 444 states and 587 transitions. [2020-10-12 18:42:41,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 18:42:41,860 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 587 transitions. [2020-10-12 18:42:41,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-12 18:42:41,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:42:41,862 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:42:41,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 18:42:41,863 INFO L427 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:42:41,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:42:41,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1886425508, now seen corresponding path program 1 times [2020-10-12 18:42:41,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:42:41,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136088965] [2020-10-12 18:42:41,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:42:41,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:41,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:41,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:41,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:41,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:42,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:42,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:46,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:42:46,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 18:42:46,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 18:42:46,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 18:42:46,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:42:46,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:42:46,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:42:46,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 18:42:46,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:42:46,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:42:46,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:46,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:46,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:42:46,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:42:46,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:42:46,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 18:42:46,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:42:46,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:42:46,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:42:46,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:42:46,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:42:46,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:42:46,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:46,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:46,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:42:46,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:42:46,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:42:46,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 18:42:46,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:42:46,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:42:46,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:42:46,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 18:42:46,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:42:47,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 18:42:47,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:47,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:47,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:42:47,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:42:47,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:42:47,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 18:42:47,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:42:47,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:42:47,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:42:47,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:42:47,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:42:47,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 18:42:47,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:47,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:47,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:42:47,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:42:47,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:42:47,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 18:42:47,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:42:47,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:42:47,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:42:47,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:42:47,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:42:47,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-12 18:42:47,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:47,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:47,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:42:47,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:42:47,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:42:47,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 18:42:47,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:42:47,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:42:47,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:42:47,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:42:47,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:42:47,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-12 18:42:47,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:47,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:47,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:42:47,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:42:47,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:42:47,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:42:47,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:42:47,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:42:47,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 18:42:47,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 18:42:47,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:42:47,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:42:47,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136088965] [2020-10-12 18:42:47,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:42:47,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 18:42:47,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467878949] [2020-10-12 18:42:47,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 18:42:47,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:42:47,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 18:42:47,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:42:47,205 INFO L87 Difference]: Start difference. First operand 444 states and 587 transitions. Second operand 13 states. [2020-10-12 18:42:49,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:42:49,907 INFO L93 Difference]: Finished difference Result 768 states and 1017 transitions. [2020-10-12 18:42:49,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-12 18:42:49,908 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 66 [2020-10-12 18:42:49,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:42:49,912 INFO L225 Difference]: With dead ends: 768 [2020-10-12 18:42:49,912 INFO L226 Difference]: Without dead ends: 415 [2020-10-12 18:42:49,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=400, Invalid=1322, Unknown=0, NotChecked=0, Total=1722 [2020-10-12 18:42:49,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2020-10-12 18:42:49,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 387. [2020-10-12 18:42:49,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2020-10-12 18:42:49,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 508 transitions. [2020-10-12 18:42:49,955 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 508 transitions. Word has length 66 [2020-10-12 18:42:49,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:42:49,955 INFO L479 AbstractCegarLoop]: Abstraction has 387 states and 508 transitions. [2020-10-12 18:42:49,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 18:42:49,955 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 508 transitions. [2020-10-12 18:42:49,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-12 18:42:49,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:42:49,957 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:42:49,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 18:42:49,958 INFO L427 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:42:49,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:42:49,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1178191952, now seen corresponding path program 1 times [2020-10-12 18:42:49,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:42:49,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2088396520] [2020-10-12 18:42:49,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:42:49,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:49,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:49,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:50,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:50,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:50,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:50,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:54,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:42:54,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 18:42:54,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 18:42:54,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4528 [2020-10-12 18:42:54,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:42:54,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:42:54,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:42:54,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 18:42:54,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:42:54,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:42:54,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:54,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:54,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:42:54,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:42:54,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:42:54,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:42:54,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:42:54,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:42:54,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:42:54,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:42:54,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:42:54,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:42:54,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:54,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:54,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:42:54,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:42:54,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:42:54,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:42:54,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:42:54,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:42:54,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:42:54,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 18:42:54,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:42:54,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 18:42:54,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:54,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:54,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:42:54,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:42:54,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:42:54,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 18:42:54,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:42:54,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:42:54,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:42:54,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:42:54,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:42:54,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 18:42:54,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:54,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:54,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:42:54,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:42:54,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:42:54,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 18:42:54,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:42:54,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:42:54,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:42:54,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:42:54,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:42:54,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-12 18:42:54,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:54,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:54,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:42:54,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:42:54,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:42:54,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 18:42:54,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:42:54,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:42:54,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:42:54,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:42:54,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:42:54,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-12 18:42:54,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:54,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:54,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:42:54,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:42:54,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:42:54,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:42:54,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:42:54,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:42:54,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 18:42:54,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 18:42:54,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:42:54,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:42:54,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2088396520] [2020-10-12 18:42:54,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:42:54,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 18:42:54,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638204430] [2020-10-12 18:42:54,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 18:42:54,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:42:54,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 18:42:54,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:42:54,806 INFO L87 Difference]: Start difference. First operand 387 states and 508 transitions. Second operand 13 states. [2020-10-12 18:42:54,996 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-10-12 18:42:57,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:42:57,757 INFO L93 Difference]: Finished difference Result 747 states and 987 transitions. [2020-10-12 18:42:57,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-12 18:42:57,758 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 66 [2020-10-12 18:42:57,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:42:57,762 INFO L225 Difference]: With dead ends: 747 [2020-10-12 18:42:57,762 INFO L226 Difference]: Without dead ends: 515 [2020-10-12 18:42:57,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=395, Invalid=1327, Unknown=0, NotChecked=0, Total=1722 [2020-10-12 18:42:57,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2020-10-12 18:42:57,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 482. [2020-10-12 18:42:57,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2020-10-12 18:42:57,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 635 transitions. [2020-10-12 18:42:57,800 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 635 transitions. Word has length 66 [2020-10-12 18:42:57,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:42:57,800 INFO L479 AbstractCegarLoop]: Abstraction has 482 states and 635 transitions. [2020-10-12 18:42:57,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 18:42:57,800 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 635 transitions. [2020-10-12 18:42:57,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-12 18:42:57,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:42:57,802 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:42:57,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 18:42:57,802 INFO L427 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:42:57,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:42:57,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1896727580, now seen corresponding path program 1 times [2020-10-12 18:42:57,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:42:57,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035652353] [2020-10-12 18:42:57,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:42:57,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:42:57,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:57,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:57,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:57,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:57,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:42:58,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:02,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:02,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 18:43:02,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 18:43:02,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4668 [2020-10-12 18:43:02,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:02,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:43:02,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 18:43:02,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 18:43:02,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:02,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:43:02,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:02,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:02,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:02,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:43:02,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:02,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:43:02,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:02,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:43:02,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:43:02,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:43:02,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:02,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:43:02,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:02,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:02,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:02,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:43:02,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:02,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 18:43:02,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:02,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:43:02,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:43:02,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 18:43:02,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:02,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 18:43:02,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:02,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:02,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:02,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:43:02,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:02,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 18:43:02,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:02,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:43:02,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:43:02,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:43:02,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:02,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 18:43:02,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:02,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:02,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:02,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:43:02,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:02,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 18:43:02,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:02,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:43:02,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:43:02,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:43:02,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:02,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-12 18:43:02,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:02,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:02,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:02,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:43:02,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:02,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 18:43:02,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:02,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:43:02,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:43:02,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:43:02,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:02,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-12 18:43:02,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:02,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:02,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:02,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:43:02,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:02,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:43:02,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:02,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:43:02,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 18:43:02,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 18:43:02,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:02,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:43:02,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035652353] [2020-10-12 18:43:02,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:43:02,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 18:43:02,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833893284] [2020-10-12 18:43:02,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 18:43:02,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:43:02,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 18:43:02,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:43:02,774 INFO L87 Difference]: Start difference. First operand 482 states and 635 transitions. Second operand 13 states. [2020-10-12 18:43:05,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:43:05,583 INFO L93 Difference]: Finished difference Result 899 states and 1194 transitions. [2020-10-12 18:43:05,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-12 18:43:05,585 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 66 [2020-10-12 18:43:05,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:43:05,592 INFO L225 Difference]: With dead ends: 899 [2020-10-12 18:43:05,593 INFO L226 Difference]: Without dead ends: 768 [2020-10-12 18:43:05,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=376, Invalid=1184, Unknown=0, NotChecked=0, Total=1560 [2020-10-12 18:43:05,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2020-10-12 18:43:05,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 709. [2020-10-12 18:43:05,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 709 states. [2020-10-12 18:43:05,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 939 transitions. [2020-10-12 18:43:05,682 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 939 transitions. Word has length 66 [2020-10-12 18:43:05,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:43:05,684 INFO L479 AbstractCegarLoop]: Abstraction has 709 states and 939 transitions. [2020-10-12 18:43:05,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 18:43:05,684 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 939 transitions. [2020-10-12 18:43:05,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-12 18:43:05,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:43:05,688 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:43:05,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 18:43:05,688 INFO L427 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:43:05,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:43:05,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1964821915, now seen corresponding path program 1 times [2020-10-12 18:43:05,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:43:05,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [217742762] [2020-10-12 18:43:05,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:43:05,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:05,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:05,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:05,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:05,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:06,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:07,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:07,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-12 18:43:07,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:43:07,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1502 [2020-10-12 18:43:07,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:07,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:43:07,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:43:07,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 18:43:07,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:07,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:43:07,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:07,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:07,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:07,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:43:07,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:07,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:43:07,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:07,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:43:07,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:43:07,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:43:07,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:07,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:43:07,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:07,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:07,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:07,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:43:07,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:07,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 18:43:07,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:07,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:43:07,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:43:07,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 18:43:07,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:07,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 18:43:07,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:07,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:07,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:07,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:43:07,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:07,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 18:43:07,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:07,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:43:07,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:43:07,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:43:07,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:07,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 18:43:07,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:07,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:07,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:07,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:43:07,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:07,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:43:07,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:07,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:43:07,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:43:07,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:43:07,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:07,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-12 18:43:07,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:07,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:07,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:07,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:43:07,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:07,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:43:07,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:07,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:43:07,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:43:07,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:43:07,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:07,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-12 18:43:07,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:07,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:07,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:07,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:07,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:43:07,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:43:07,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 18:43:07,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:07,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:43:07,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-12 18:43:07,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:43:07,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:07,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:43:07,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [217742762] [2020-10-12 18:43:07,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:43:07,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 18:43:07,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974030758] [2020-10-12 18:43:07,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 18:43:07,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:43:07,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 18:43:07,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-12 18:43:07,477 INFO L87 Difference]: Start difference. First operand 709 states and 939 transitions. Second operand 11 states. [2020-10-12 18:43:09,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:43:09,527 INFO L93 Difference]: Finished difference Result 2829 states and 3822 transitions. [2020-10-12 18:43:09,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 18:43:09,528 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-10-12 18:43:09,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:43:09,541 INFO L225 Difference]: With dead ends: 2829 [2020-10-12 18:43:09,541 INFO L226 Difference]: Without dead ends: 2150 [2020-10-12 18:43:09,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2020-10-12 18:43:09,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2150 states. [2020-10-12 18:43:09,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2150 to 2144. [2020-10-12 18:43:09,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2144 states. [2020-10-12 18:43:09,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2144 states to 2144 states and 2833 transitions. [2020-10-12 18:43:09,702 INFO L78 Accepts]: Start accepts. Automaton has 2144 states and 2833 transitions. Word has length 67 [2020-10-12 18:43:09,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:43:09,703 INFO L479 AbstractCegarLoop]: Abstraction has 2144 states and 2833 transitions. [2020-10-12 18:43:09,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 18:43:09,703 INFO L276 IsEmpty]: Start isEmpty. Operand 2144 states and 2833 transitions. [2020-10-12 18:43:09,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 18:43:09,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:43:09,710 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:43:09,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 18:43:09,711 INFO L427 AbstractCegarLoop]: === Iteration 10 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:43:09,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:43:09,712 INFO L82 PathProgramCache]: Analyzing trace with hash -115101188, now seen corresponding path program 1 times [2020-10-12 18:43:09,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:43:09,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1177137226] [2020-10-12 18:43:09,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:43:09,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:09,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:09,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:09,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:09,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:09,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:12,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:12,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 18:43:12,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:43:12,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3247 [2020-10-12 18:43:12,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:12,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:43:12,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 18:43:12,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 18:43:12,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:13,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:43:13,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:13,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:13,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:13,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:43:13,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:13,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 18:43:13,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:13,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:43:13,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:43:13,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 18:43:13,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:13,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:43:13,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:13,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:13,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:13,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:43:13,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:13,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 18:43:13,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:13,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:43:13,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:43:13,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 18:43:13,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:13,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 18:43:13,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:13,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:13,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:13,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:43:13,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:13,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 18:43:13,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:13,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:43:13,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:43:13,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:43:13,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:13,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 18:43:13,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:13,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:13,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:13,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:43:13,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:13,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 18:43:13,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:13,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:43:13,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:43:13,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:43:13,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:13,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-12 18:43:13,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:13,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:13,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:13,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:43:13,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:13,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 18:43:13,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:13,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:43:13,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:43:13,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 18:43:13,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:43:13,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-12 18:43:13,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:13,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:13,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:13,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 18:43:13,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:13,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:43:13,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:13,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:43:13,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-12 18:43:13,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:43:13,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:43:13,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:43:13,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1177137226] [2020-10-12 18:43:13,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:43:13,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 18:43:13,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859876654] [2020-10-12 18:43:13,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 18:43:13,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:43:13,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 18:43:13,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:43:13,309 INFO L87 Difference]: Start difference. First operand 2144 states and 2833 transitions. Second operand 13 states. [2020-10-12 18:43:14,312 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-12 18:43:15,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:43:15,115 INFO L93 Difference]: Finished difference Result 4738 states and 6172 transitions. [2020-10-12 18:43:15,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 18:43:15,115 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 68 [2020-10-12 18:43:15,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:43:15,129 INFO L225 Difference]: With dead ends: 4738 [2020-10-12 18:43:15,129 INFO L226 Difference]: Without dead ends: 2624 [2020-10-12 18:43:15,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-10-12 18:43:15,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2624 states. [2020-10-12 18:43:15,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2624 to 2257. [2020-10-12 18:43:15,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2257 states. [2020-10-12 18:43:15,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 2984 transitions. [2020-10-12 18:43:15,309 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 2984 transitions. Word has length 68 [2020-10-12 18:43:15,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:43:15,310 INFO L479 AbstractCegarLoop]: Abstraction has 2257 states and 2984 transitions. [2020-10-12 18:43:15,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 18:43:15,310 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 2984 transitions. [2020-10-12 18:43:15,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 18:43:15,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:43:15,313 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:43:15,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 18:43:15,314 INFO L427 AbstractCegarLoop]: === Iteration 11 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:43:15,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:43:15,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1135084808, now seen corresponding path program 1 times [2020-10-12 18:43:15,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:43:15,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201656734] [2020-10-12 18:43:15,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:43:15,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:15,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:15,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:15,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:15,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:15,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:19,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:19,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 18:43:19,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:43:19,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3734 [2020-10-12 18:43:19,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:19,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:43:19,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 18:43:19,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 18:43:19,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:19,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:43:19,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:19,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:19,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:19,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:43:19,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:19,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 18:43:19,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:19,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:43:19,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:43:19,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 18:43:19,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:19,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:43:19,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:19,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:19,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:19,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:43:19,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:19,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 18:43:19,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:19,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:43:19,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:43:19,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 18:43:19,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:43:19,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 18:43:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:19,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:19,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:19,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:43:19,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:19,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:43:19,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:19,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:43:19,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:43:19,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:43:19,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:19,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 18:43:19,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:19,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:19,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:19,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:43:19,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:19,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 18:43:19,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:19,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:43:19,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:43:19,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 18:43:19,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:43:19,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-12 18:43:19,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:19,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:19,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:19,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:43:19,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:19,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:43:19,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:19,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:43:19,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 18:43:19,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:43:19,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:43:19,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-12 18:43:19,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:19,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:19,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:19,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 18:43:19,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:19,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 18:43:19,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:19,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:43:19,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-12 18:43:19,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:43:19,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:43:19,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:43:19,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201656734] [2020-10-12 18:43:19,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:43:19,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 18:43:19,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002816544] [2020-10-12 18:43:19,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 18:43:19,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:43:19,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 18:43:19,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:43:19,529 INFO L87 Difference]: Start difference. First operand 2257 states and 2984 transitions. Second operand 13 states. [2020-10-12 18:43:19,774 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2020-10-12 18:43:20,192 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 83 [2020-10-12 18:43:20,480 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 85 [2020-10-12 18:43:21,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:43:21,486 INFO L93 Difference]: Finished difference Result 5103 states and 6726 transitions. [2020-10-12 18:43:21,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 18:43:21,486 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 68 [2020-10-12 18:43:21,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:43:21,501 INFO L225 Difference]: With dead ends: 5103 [2020-10-12 18:43:21,501 INFO L226 Difference]: Without dead ends: 2911 [2020-10-12 18:43:21,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=228, Invalid=584, Unknown=0, NotChecked=0, Total=812 [2020-10-12 18:43:21,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2020-10-12 18:43:21,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 2444. [2020-10-12 18:43:21,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2444 states. [2020-10-12 18:43:21,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2444 states to 2444 states and 3240 transitions. [2020-10-12 18:43:21,799 INFO L78 Accepts]: Start accepts. Automaton has 2444 states and 3240 transitions. Word has length 68 [2020-10-12 18:43:21,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:43:21,800 INFO L479 AbstractCegarLoop]: Abstraction has 2444 states and 3240 transitions. [2020-10-12 18:43:21,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 18:43:21,800 INFO L276 IsEmpty]: Start isEmpty. Operand 2444 states and 3240 transitions. [2020-10-12 18:43:21,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 18:43:21,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:43:21,802 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:43:21,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 18:43:21,803 INFO L427 AbstractCegarLoop]: === Iteration 12 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:43:21,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:43:21,803 INFO L82 PathProgramCache]: Analyzing trace with hash 2112080956, now seen corresponding path program 1 times [2020-10-12 18:43:21,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:43:21,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447303160] [2020-10-12 18:43:21,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:43:21,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:21,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:21,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:21,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:21,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:22,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:25,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:25,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 18:43:25,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:43:25,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3431 [2020-10-12 18:43:25,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:25,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:43:25,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 18:43:25,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 18:43:25,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:25,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:43:25,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:25,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:25,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:25,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:43:25,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:25,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 18:43:25,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:25,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:43:25,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:43:25,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 18:43:25,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:43:25,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:43:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:25,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:25,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:25,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:43:25,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:25,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 18:43:25,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:25,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:43:25,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:43:25,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 18:43:25,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:43:25,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 18:43:25,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:25,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:25,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:25,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:43:25,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:25,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 18:43:25,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:25,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:43:25,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:43:25,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 18:43:25,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:25,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 18:43:25,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:25,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:25,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:25,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:43:25,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:25,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:43:25,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:25,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:43:25,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 18:43:25,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:43:25,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:25,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-12 18:43:25,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:25,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:25,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:25,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:43:25,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:25,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:43:25,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:25,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:43:25,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 18:43:25,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:43:25,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:25,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-12 18:43:25,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:25,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:25,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:25,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 18:43:25,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:25,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:43:25,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:25,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:43:25,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-12 18:43:25,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:43:25,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:25,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:43:25,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447303160] [2020-10-12 18:43:25,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:43:25,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 18:43:25,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80638013] [2020-10-12 18:43:25,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 18:43:25,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:43:25,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 18:43:25,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:43:25,620 INFO L87 Difference]: Start difference. First operand 2444 states and 3240 transitions. Second operand 13 states. [2020-10-12 18:43:25,798 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2020-10-12 18:43:26,155 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 83 [2020-10-12 18:43:26,315 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 85 [2020-10-12 18:43:27,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:43:27,523 INFO L93 Difference]: Finished difference Result 5203 states and 6980 transitions. [2020-10-12 18:43:27,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 18:43:27,523 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 68 [2020-10-12 18:43:27,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:43:27,540 INFO L225 Difference]: With dead ends: 5203 [2020-10-12 18:43:27,541 INFO L226 Difference]: Without dead ends: 3191 [2020-10-12 18:43:27,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=228, Invalid=584, Unknown=0, NotChecked=0, Total=812 [2020-10-12 18:43:27,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3191 states. [2020-10-12 18:43:27,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3191 to 2478. [2020-10-12 18:43:27,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2478 states. [2020-10-12 18:43:27,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2478 states to 2478 states and 3293 transitions. [2020-10-12 18:43:27,790 INFO L78 Accepts]: Start accepts. Automaton has 2478 states and 3293 transitions. Word has length 68 [2020-10-12 18:43:27,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:43:27,790 INFO L479 AbstractCegarLoop]: Abstraction has 2478 states and 3293 transitions. [2020-10-12 18:43:27,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 18:43:27,791 INFO L276 IsEmpty]: Start isEmpty. Operand 2478 states and 3293 transitions. [2020-10-12 18:43:27,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-12 18:43:27,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:43:27,796 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:43:27,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 18:43:27,797 INFO L427 AbstractCegarLoop]: === Iteration 13 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:43:27,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:43:27,797 INFO L82 PathProgramCache]: Analyzing trace with hash -955960746, now seen corresponding path program 1 times [2020-10-12 18:43:27,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:43:27,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1976255270] [2020-10-12 18:43:27,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:43:27,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:27,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:27,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:27,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:27,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:27,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:30,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:32,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:32,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-12 18:43:32,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 18:43:32,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 18:43:32,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:32,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:43:32,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-12 18:43:32,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 18:43:32,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:32,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:43:32,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:32,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:32,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:32,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:43:32,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:32,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:43:32,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:32,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:43:32,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:43:32,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:43:32,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:32,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:43:32,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:32,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:32,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:32,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:43:32,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:32,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 18:43:32,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:32,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:43:32,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:43:32,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 18:43:32,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:32,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 18:43:32,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:32,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:32,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:32,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:43:32,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:32,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 18:43:32,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:32,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:43:32,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:43:32,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:43:32,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:32,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 18:43:32,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:32,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:32,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:32,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:43:32,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:32,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:43:32,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:32,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:43:32,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:43:33,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:43:33,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:33,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-12 18:43:33,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:33,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:33,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:33,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:43:33,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:33,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 18:43:33,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:33,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:43:33,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:43:33,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:43:33,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:33,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-12 18:43:33,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:33,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:33,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:33,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:43:33,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:33,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:43:33,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:33,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:43:33,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 18:43:33,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:43:33,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:33,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 18:43:33,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:33,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:33,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:33,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:43:33,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:33,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:43:33,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:33,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:43:33,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 18:43:33,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:43:33,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:33,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 18:43:33,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:33,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:33,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:33,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:43:33,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:33,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:43:33,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:33,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:43:33,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 18:43:33,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:43:33,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:33,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-12 18:43:33,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:33,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:33,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:33,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:43:33,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:33,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:43:33,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:33,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:43:33,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 18:43:33,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:43:33,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:33,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-12 18:43:33,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:33,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:33,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:33,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:43:33,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:33,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:43:33,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:33,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:43:33,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 18:43:33,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:43:33,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:33,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-12 18:43:33,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:33,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:33,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:33,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:43:33,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:33,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:43:33,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:33,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:43:33,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 18:43:33,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:43:33,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:33,093 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-12 18:43:33,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1976255270] [2020-10-12 18:43:33,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:43:33,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 18:43:33,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928307714] [2020-10-12 18:43:33,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 18:43:33,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:43:33,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 18:43:33,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-12 18:43:33,095 INFO L87 Difference]: Start difference. First operand 2478 states and 3293 transitions. Second operand 9 states. [2020-10-12 18:43:34,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:43:34,195 INFO L93 Difference]: Finished difference Result 6883 states and 9213 transitions. [2020-10-12 18:43:34,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 18:43:34,196 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2020-10-12 18:43:34,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:43:34,218 INFO L225 Difference]: With dead ends: 6883 [2020-10-12 18:43:34,218 INFO L226 Difference]: Without dead ends: 4475 [2020-10-12 18:43:34,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-10-12 18:43:34,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4475 states. [2020-10-12 18:43:34,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4475 to 4319. [2020-10-12 18:43:34,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4319 states. [2020-10-12 18:43:34,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4319 states to 4319 states and 5626 transitions. [2020-10-12 18:43:34,538 INFO L78 Accepts]: Start accepts. Automaton has 4319 states and 5626 transitions. Word has length 106 [2020-10-12 18:43:34,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:43:34,538 INFO L479 AbstractCegarLoop]: Abstraction has 4319 states and 5626 transitions. [2020-10-12 18:43:34,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 18:43:34,539 INFO L276 IsEmpty]: Start isEmpty. Operand 4319 states and 5626 transitions. [2020-10-12 18:43:34,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-12 18:43:34,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:43:34,542 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:43:34,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 18:43:34,542 INFO L427 AbstractCegarLoop]: === Iteration 14 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:43:34,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:43:34,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1105798220, now seen corresponding path program 1 times [2020-10-12 18:43:34,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:43:34,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166080519] [2020-10-12 18:43:34,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:43:34,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:34,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:34,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:34,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:34,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:34,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:39,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:39,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-12 18:43:39,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:43:39,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 18:43:39,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:39,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:43:39,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 18:43:39,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-12 18:43:39,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:39,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:43:39,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:39,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:39,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:39,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:43:39,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:39,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:43:39,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:39,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:43:39,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:43:39,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:43:39,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:39,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:43:39,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:39,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:39,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:39,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:43:39,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:39,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:43:39,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:39,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:43:39,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:43:39,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 18:43:39,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:39,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 18:43:39,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:39,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:39,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:39,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:43:39,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:39,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:43:39,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:39,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:43:39,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:43:39,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:43:39,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:39,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 18:43:39,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:39,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:39,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:39,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:43:39,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:39,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:43:39,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:39,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:43:39,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:43:39,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:43:39,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:39,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-12 18:43:39,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:39,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:39,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:39,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:43:39,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:39,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 18:43:39,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:39,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:43:39,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:43:39,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:43:39,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:39,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-12 18:43:39,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:39,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:39,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:39,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:43:39,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:39,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:43:39,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:39,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:43:39,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:43:39,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:43:39,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:39,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 18:43:39,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:39,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:39,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:39,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:43:39,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:39,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:43:39,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:39,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:43:39,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:43:39,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:43:39,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:39,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 18:43:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:39,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:39,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:39,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:43:39,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:39,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 18:43:39,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:39,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:43:39,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:43:39,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:43:39,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:39,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-12 18:43:40,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:40,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:40,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:40,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:43:40,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:40,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:43:40,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:40,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:43:40,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 18:43:40,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:43:40,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:40,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-12 18:43:40,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:40,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:40,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:40,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:43:40,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:40,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:43:40,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:40,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:43:40,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 18:43:40,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:43:40,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:40,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-12 18:43:40,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:40,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:40,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:40,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:43:40,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:40,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:43:40,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:40,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:43:40,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 18:43:40,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:43:40,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:40,030 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 18:43:40,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166080519] [2020-10-12 18:43:40,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:43:40,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 18:43:40,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969847407] [2020-10-12 18:43:40,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 18:43:40,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:43:40,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 18:43:40,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-12 18:43:40,032 INFO L87 Difference]: Start difference. First operand 4319 states and 5626 transitions. Second operand 15 states. [2020-10-12 18:43:41,011 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 99 [2020-10-12 18:43:42,100 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 101 [2020-10-12 18:43:43,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:43:43,520 INFO L93 Difference]: Finished difference Result 14969 states and 19524 transitions. [2020-10-12 18:43:43,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-12 18:43:43,520 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 106 [2020-10-12 18:43:43,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:43:43,580 INFO L225 Difference]: With dead ends: 14969 [2020-10-12 18:43:43,580 INFO L226 Difference]: Without dead ends: 11901 [2020-10-12 18:43:43,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=364, Invalid=1442, Unknown=0, NotChecked=0, Total=1806 [2020-10-12 18:43:43,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11901 states. [2020-10-12 18:43:44,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11901 to 11457. [2020-10-12 18:43:44,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11457 states. [2020-10-12 18:43:44,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11457 states to 11457 states and 14901 transitions. [2020-10-12 18:43:44,425 INFO L78 Accepts]: Start accepts. Automaton has 11457 states and 14901 transitions. Word has length 106 [2020-10-12 18:43:44,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:43:44,425 INFO L479 AbstractCegarLoop]: Abstraction has 11457 states and 14901 transitions. [2020-10-12 18:43:44,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 18:43:44,425 INFO L276 IsEmpty]: Start isEmpty. Operand 11457 states and 14901 transitions. [2020-10-12 18:43:44,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-12 18:43:44,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:43:44,431 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:43:44,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 18:43:44,431 INFO L427 AbstractCegarLoop]: === Iteration 15 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:43:44,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:43:44,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1539527306, now seen corresponding path program 1 times [2020-10-12 18:43:44,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:43:44,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11780765] [2020-10-12 18:43:44,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:43:44,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:44,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:44,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:44,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:44,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:44,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:49,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:49,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-12 18:43:49,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:43:49,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 18:43:49,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:49,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:43:49,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 18:43:49,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 18:43:49,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:49,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:43:49,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:49,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:49,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:49,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:43:49,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:49,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 18:43:49,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:49,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:43:49,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:43:49,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 18:43:49,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:49,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:43:49,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:49,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:49,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:49,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:43:49,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:49,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 18:43:49,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:49,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:43:49,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:43:49,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 18:43:49,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:49,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 18:43:49,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:49,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:49,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:49,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:43:49,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:49,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:43:49,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:49,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:43:49,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:43:49,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:43:49,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:49,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 18:43:49,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:49,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:49,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:49,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:43:49,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:49,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:43:49,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:49,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:43:49,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:43:49,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:43:49,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:49,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-12 18:43:49,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:49,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:49,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:49,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:43:49,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:49,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 18:43:49,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:49,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:43:49,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:43:49,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:43:49,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:49,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-12 18:43:49,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:49,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:49,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:49,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:43:49,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:49,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:43:49,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:49,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:43:49,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 18:43:49,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:43:49,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:49,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 18:43:49,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:49,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:49,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:49,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:43:49,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:49,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:43:49,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:49,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:43:49,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 18:43:49,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:43:49,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:49,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 18:43:49,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:49,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:49,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:49,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:43:49,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:49,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:43:49,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:49,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:43:49,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 18:43:49,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:43:49,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:49,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-12 18:43:49,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:49,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:49,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:49,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:43:49,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:49,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:43:49,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:49,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:43:49,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 18:43:49,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:43:49,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:49,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-12 18:43:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:49,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:49,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:49,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:43:49,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:49,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:43:49,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:49,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:43:49,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 18:43:49,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:43:49,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:49,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-12 18:43:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:49,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:49,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:49,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:43:49,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:49,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:43:49,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:49,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:43:49,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 18:43:49,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:43:49,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:49,826 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-12 18:43:49,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11780765] [2020-10-12 18:43:49,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:43:49,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 18:43:49,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823879184] [2020-10-12 18:43:49,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 18:43:49,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:43:49,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 18:43:49,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:43:49,827 INFO L87 Difference]: Start difference. First operand 11457 states and 14901 transitions. Second operand 13 states. [2020-10-12 18:43:50,024 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 82 [2020-10-12 18:43:50,482 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 83 [2020-10-12 18:43:52,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:43:52,037 INFO L93 Difference]: Finished difference Result 20996 states and 27526 transitions. [2020-10-12 18:43:52,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 18:43:52,038 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 106 [2020-10-12 18:43:52,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:43:52,091 INFO L225 Difference]: With dead ends: 20996 [2020-10-12 18:43:52,092 INFO L226 Difference]: Without dead ends: 9568 [2020-10-12 18:43:52,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=159, Invalid=393, Unknown=0, NotChecked=0, Total=552 [2020-10-12 18:43:52,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9568 states. [2020-10-12 18:43:52,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9568 to 9408. [2020-10-12 18:43:52,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9408 states. [2020-10-12 18:43:52,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9408 states to 9408 states and 12092 transitions. [2020-10-12 18:43:52,837 INFO L78 Accepts]: Start accepts. Automaton has 9408 states and 12092 transitions. Word has length 106 [2020-10-12 18:43:52,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:43:52,838 INFO L479 AbstractCegarLoop]: Abstraction has 9408 states and 12092 transitions. [2020-10-12 18:43:52,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 18:43:52,838 INFO L276 IsEmpty]: Start isEmpty. Operand 9408 states and 12092 transitions. [2020-10-12 18:43:52,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-12 18:43:52,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:43:52,843 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:43:52,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 18:43:52,843 INFO L427 AbstractCegarLoop]: === Iteration 16 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:43:52,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:43:52,844 INFO L82 PathProgramCache]: Analyzing trace with hash 720952073, now seen corresponding path program 1 times [2020-10-12 18:43:52,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:43:52,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [672954796] [2020-10-12 18:43:52,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:43:52,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:52,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:52,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:52,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:52,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:57,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:57,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:57,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:57,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-12 18:43:57,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 18:43:57,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5123 [2020-10-12 18:43:57,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:57,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:43:57,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:43:57,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-12 18:43:57,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:58,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:43:58,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:58,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:58,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:58,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:43:58,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:58,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 18:43:58,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:58,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:43:58,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:43:58,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:43:58,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:58,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:43:58,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:58,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:58,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:58,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:43:58,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:58,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:43:58,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:58,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:43:58,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:43:58,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 18:43:58,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:58,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 18:43:58,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:58,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:58,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:58,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:43:58,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:58,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 18:43:58,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:58,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:43:58,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:43:58,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:43:58,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:58,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 18:43:58,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:58,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:58,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:58,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:43:58,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:58,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:43:58,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:58,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:43:58,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:43:58,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:43:58,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:58,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-12 18:43:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:58,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:58,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:58,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:43:58,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:58,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:43:58,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:58,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:43:58,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:43:58,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:43:58,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:58,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-12 18:43:58,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:58,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:58,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:58,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:43:58,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:58,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:43:58,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:58,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:43:58,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:43:58,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:43:58,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:58,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 18:43:58,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:58,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:58,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:58,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:43:58,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:58,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:43:58,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:58,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:43:58,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:43:58,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:43:58,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:58,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 18:43:58,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:58,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:58,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:58,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 18:43:58,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:58,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 18:43:58,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:58,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:43:58,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:43:58,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 18:43:58,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:58,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 18:43:58,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:58,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:58,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:58,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:43:58,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:58,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:43:58,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:58,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:43:58,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:43:58,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:43:58,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:58,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-12 18:43:58,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:58,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:58,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:58,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:43:58,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:43:58,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:43:58,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:58,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:43:58,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:43:58,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:43:58,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:58,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-12 18:43:58,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:43:58,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:58,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:43:58,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:43:58,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:43:58,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:43:58,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:43:58,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:43:58,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:43:58,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-12 18:43:58,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:43:58,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:43:58,346 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 18:43:58,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [672954796] [2020-10-12 18:43:58,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:43:58,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 18:43:58,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069043288] [2020-10-12 18:43:58,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 18:43:58,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:43:58,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 18:43:58,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:43:58,348 INFO L87 Difference]: Start difference. First operand 9408 states and 12092 transitions. Second operand 13 states. [2020-10-12 18:43:58,504 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 78 [2020-10-12 18:43:59,024 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 87 [2020-10-12 18:44:00,062 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2020-10-12 18:44:01,215 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2020-10-12 18:44:02,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:44:02,242 INFO L93 Difference]: Finished difference Result 16892 states and 21965 transitions. [2020-10-12 18:44:02,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-12 18:44:02,243 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 107 [2020-10-12 18:44:02,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:44:02,288 INFO L225 Difference]: With dead ends: 16892 [2020-10-12 18:44:02,288 INFO L226 Difference]: Without dead ends: 11443 [2020-10-12 18:44:02,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=258, Invalid=1002, Unknown=0, NotChecked=0, Total=1260 [2020-10-12 18:44:02,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11443 states. [2020-10-12 18:44:03,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11443 to 11435. [2020-10-12 18:44:03,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11435 states. [2020-10-12 18:44:03,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11435 states to 11435 states and 14747 transitions. [2020-10-12 18:44:03,566 INFO L78 Accepts]: Start accepts. Automaton has 11435 states and 14747 transitions. Word has length 107 [2020-10-12 18:44:03,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:44:03,566 INFO L479 AbstractCegarLoop]: Abstraction has 11435 states and 14747 transitions. [2020-10-12 18:44:03,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 18:44:03,567 INFO L276 IsEmpty]: Start isEmpty. Operand 11435 states and 14747 transitions. [2020-10-12 18:44:03,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-12 18:44:03,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:44:03,575 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:44:03,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 18:44:03,576 INFO L427 AbstractCegarLoop]: === Iteration 17 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:44:03,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:44:03,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1252150187, now seen corresponding path program 1 times [2020-10-12 18:44:03,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:44:03,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485461248] [2020-10-12 18:44:03,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:44:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:03,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:03,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:03,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:03,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:04,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:08,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:08,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-12 18:44:08,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:44:08,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 18:44:08,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:08,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:44:08,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 18:44:08,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-12 18:44:08,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:08,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:44:08,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:08,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:08,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:08,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:44:08,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:08,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:44:08,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:08,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:44:08,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:44:08,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:44:08,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:08,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:44:08,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:08,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:08,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:08,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:44:08,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:08,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 18:44:08,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:08,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:44:08,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:44:08,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 18:44:08,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:08,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 18:44:08,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:08,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:08,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:08,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:44:08,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:08,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 18:44:08,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:08,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:44:08,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:44:08,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:44:08,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:08,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 18:44:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:08,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:08,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:08,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:44:08,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:08,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:44:08,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:08,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:44:08,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:44:08,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:44:08,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:08,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-12 18:44:08,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:08,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:08,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:08,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:44:08,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:08,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 18:44:08,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:08,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:44:08,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:44:08,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:44:08,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:08,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-12 18:44:08,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:08,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:08,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:08,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:44:08,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:08,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:44:08,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:08,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:44:08,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:44:08,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:44:08,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:08,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 18:44:08,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:08,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:08,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:08,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:44:08,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:08,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:44:08,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:08,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:44:08,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:44:08,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:44:08,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:08,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 18:44:08,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:08,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:08,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:08,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:44:08,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:08,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 18:44:08,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:08,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:44:08,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:44:08,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 18:44:08,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:09,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-12 18:44:09,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:09,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:09,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:09,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:44:09,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:09,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:44:09,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:09,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:44:09,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 18:44:09,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:44:09,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:09,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-12 18:44:09,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:09,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:09,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:09,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:44:09,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:09,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:44:09,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:09,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:44:09,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 18:44:09,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:44:09,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:09,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-12 18:44:09,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:09,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:09,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:09,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 18:44:09,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:09,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:44:09,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:09,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:44:09,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-12 18:44:09,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:44:09,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:09,065 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 18:44:09,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1485461248] [2020-10-12 18:44:09,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:44:09,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 18:44:09,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351610755] [2020-10-12 18:44:09,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 18:44:09,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:44:09,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 18:44:09,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2020-10-12 18:44:09,067 INFO L87 Difference]: Start difference. First operand 11435 states and 14747 transitions. Second operand 18 states. [2020-10-12 18:44:09,382 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-12 18:44:12,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:44:12,521 INFO L93 Difference]: Finished difference Result 16620 states and 21380 transitions. [2020-10-12 18:44:12,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-12 18:44:12,521 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 107 [2020-10-12 18:44:12,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:44:12,559 INFO L225 Difference]: With dead ends: 16620 [2020-10-12 18:44:12,560 INFO L226 Difference]: Without dead ends: 11385 [2020-10-12 18:44:12,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=499, Invalid=1951, Unknown=0, NotChecked=0, Total=2450 [2020-10-12 18:44:12,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11385 states. [2020-10-12 18:44:13,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11385 to 11164. [2020-10-12 18:44:13,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11164 states. [2020-10-12 18:44:13,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11164 states to 11164 states and 14333 transitions. [2020-10-12 18:44:13,423 INFO L78 Accepts]: Start accepts. Automaton has 11164 states and 14333 transitions. Word has length 107 [2020-10-12 18:44:13,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:44:13,423 INFO L479 AbstractCegarLoop]: Abstraction has 11164 states and 14333 transitions. [2020-10-12 18:44:13,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 18:44:13,423 INFO L276 IsEmpty]: Start isEmpty. Operand 11164 states and 14333 transitions. [2020-10-12 18:44:13,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-12 18:44:13,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:44:13,426 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:44:13,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 18:44:13,427 INFO L427 AbstractCegarLoop]: === Iteration 18 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:44:13,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:44:13,427 INFO L82 PathProgramCache]: Analyzing trace with hash -414898847, now seen corresponding path program 1 times [2020-10-12 18:44:13,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:44:13,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7999547] [2020-10-12 18:44:13,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:44:13,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:13,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:13,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:13,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:13,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:14,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:14,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:18,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:18,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-12 18:44:18,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 18:44:18,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 18:44:18,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:18,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:44:18,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 18:44:18,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 18:44:18,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:18,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:44:18,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:18,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:18,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:18,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:44:18,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:18,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 18:44:18,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:18,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:44:18,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:44:18,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:44:18,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:18,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:44:18,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:18,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:18,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:18,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:44:18,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:18,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:44:18,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:18,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:44:18,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:44:18,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:44:18,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:18,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 18:44:18,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:18,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:18,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:18,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:44:18,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:18,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:44:18,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:18,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:44:18,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:44:18,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:44:18,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:18,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 18:44:18,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:18,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:18,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:18,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:44:18,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:18,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 18:44:18,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:18,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:44:18,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:44:18,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:44:18,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:18,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-12 18:44:18,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:18,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:18,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:18,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:44:18,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:18,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 18:44:18,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:18,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:44:18,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:44:18,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:44:18,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:18,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-12 18:44:18,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:18,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:18,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:18,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:44:18,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:18,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:44:18,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:18,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:44:18,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:44:18,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:44:18,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 18:44:18,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 18:44:18,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:18,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:18,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:18,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:44:18,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:18,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:44:18,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:18,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:44:18,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:44:18,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:44:18,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:18,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 18:44:18,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:18,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:18,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:18,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:44:18,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:18,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 18:44:18,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:18,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:44:18,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:44:18,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:44:18,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:18,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-12 18:44:18,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:18,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:18,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:18,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:44:18,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:18,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:44:18,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:18,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:44:18,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:44:18,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:44:18,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:18,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-12 18:44:18,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:18,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:18,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:18,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:44:18,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:18,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 18:44:18,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:18,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:44:18,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:44:18,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 18:44:18,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:18,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-12 18:44:18,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:18,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:18,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:18,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 18:44:18,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:18,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:44:18,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:18,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:44:18,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-12 18:44:18,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:44:18,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:18,808 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-12 18:44:18,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7999547] [2020-10-12 18:44:18,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:44:18,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 18:44:18,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744888260] [2020-10-12 18:44:18,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 18:44:18,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:44:18,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 18:44:18,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-10-12 18:44:18,810 INFO L87 Difference]: Start difference. First operand 11164 states and 14333 transitions. Second operand 16 states. [2020-10-12 18:44:19,587 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2020-10-12 18:44:20,034 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-10-12 18:44:22,514 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-12 18:44:23,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:44:23,467 INFO L93 Difference]: Finished difference Result 29846 states and 37859 transitions. [2020-10-12 18:44:23,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-12 18:44:23,468 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 107 [2020-10-12 18:44:23,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:44:23,553 INFO L225 Difference]: With dead ends: 29846 [2020-10-12 18:44:23,553 INFO L226 Difference]: Without dead ends: 21870 [2020-10-12 18:44:23,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 972 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=684, Invalid=2856, Unknown=0, NotChecked=0, Total=3540 [2020-10-12 18:44:23,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21870 states. [2020-10-12 18:44:24,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21870 to 20047. [2020-10-12 18:44:24,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20047 states. [2020-10-12 18:44:25,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20047 states to 20047 states and 25512 transitions. [2020-10-12 18:44:25,177 INFO L78 Accepts]: Start accepts. Automaton has 20047 states and 25512 transitions. Word has length 107 [2020-10-12 18:44:25,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:44:25,177 INFO L479 AbstractCegarLoop]: Abstraction has 20047 states and 25512 transitions. [2020-10-12 18:44:25,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 18:44:25,177 INFO L276 IsEmpty]: Start isEmpty. Operand 20047 states and 25512 transitions. [2020-10-12 18:44:25,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-12 18:44:25,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:44:25,181 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:44:25,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 18:44:25,182 INFO L427 AbstractCegarLoop]: === Iteration 19 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:44:25,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:44:25,182 INFO L82 PathProgramCache]: Analyzing trace with hash 835287149, now seen corresponding path program 1 times [2020-10-12 18:44:25,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:44:25,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101122752] [2020-10-12 18:44:25,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:44:25,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:25,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:25,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:25,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:25,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:25,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:28,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:28,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-12 18:44:28,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:44:28,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3168 [2020-10-12 18:44:28,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:28,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:44:28,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 18:44:28,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-12 18:44:28,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:28,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:44:28,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:28,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:28,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:28,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:44:28,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:28,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 18:44:28,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:28,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:44:28,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:44:28,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 18:44:28,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:28,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:44:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:28,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:28,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:28,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:44:28,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:28,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 18:44:28,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:28,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:44:28,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:44:28,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 18:44:28,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:28,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 18:44:28,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:28,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:28,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:28,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:44:28,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:28,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 18:44:28,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:28,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:44:28,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:44:28,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:44:28,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:28,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 18:44:28,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:28,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:28,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:28,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:44:28,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:28,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:44:28,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:28,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:44:28,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:44:28,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:44:28,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:28,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-12 18:44:28,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:28,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:28,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:28,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:44:28,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:28,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:44:28,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:28,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:44:28,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:44:28,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:44:28,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:28,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-12 18:44:28,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:28,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:28,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:28,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:44:28,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:28,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:44:28,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:28,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:44:28,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:44:28,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:44:28,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:28,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 18:44:28,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:28,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:28,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:28,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:44:28,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:28,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:44:28,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:28,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:44:28,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:44:28,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:44:28,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:28,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 18:44:28,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:28,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:28,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:28,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:44:28,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:28,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:44:28,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:28,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:44:28,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:44:28,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:44:28,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:28,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-12 18:44:28,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:28,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:28,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:28,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:44:28,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:28,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 18:44:28,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:28,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:44:28,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:44:28,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 18:44:28,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:28,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-12 18:44:28,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:28,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:28,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:28,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:44:28,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:28,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:44:28,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:28,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:44:28,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 18:44:28,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:44:28,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:28,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-12 18:44:28,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:28,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:28,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:28,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 18:44:28,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:28,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:44:28,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:28,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:44:28,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-12 18:44:28,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:44:28,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:28,761 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-12 18:44:28,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101122752] [2020-10-12 18:44:28,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:44:28,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 18:44:28,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052061337] [2020-10-12 18:44:28,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 18:44:28,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:44:28,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 18:44:28,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-12 18:44:28,763 INFO L87 Difference]: Start difference. First operand 20047 states and 25512 transitions. Second operand 15 states. [2020-10-12 18:44:28,952 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2020-10-12 18:44:29,385 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 85 [2020-10-12 18:44:29,769 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 83 [2020-10-12 18:44:29,947 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 87 [2020-10-12 18:44:30,116 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 85 [2020-10-12 18:44:30,801 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 83 [2020-10-12 18:44:34,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:44:34,009 INFO L93 Difference]: Finished difference Result 55776 states and 70572 transitions. [2020-10-12 18:44:34,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-12 18:44:34,010 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 107 [2020-10-12 18:44:34,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:44:34,132 INFO L225 Difference]: With dead ends: 55776 [2020-10-12 18:44:34,132 INFO L226 Difference]: Without dead ends: 38336 [2020-10-12 18:44:34,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=499, Invalid=1393, Unknown=0, NotChecked=0, Total=1892 [2020-10-12 18:44:34,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38336 states. [2020-10-12 18:44:37,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38336 to 33157. [2020-10-12 18:44:37,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33157 states. [2020-10-12 18:44:37,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33157 states to 33157 states and 41718 transitions. [2020-10-12 18:44:37,595 INFO L78 Accepts]: Start accepts. Automaton has 33157 states and 41718 transitions. Word has length 107 [2020-10-12 18:44:37,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:44:37,595 INFO L479 AbstractCegarLoop]: Abstraction has 33157 states and 41718 transitions. [2020-10-12 18:44:37,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 18:44:37,595 INFO L276 IsEmpty]: Start isEmpty. Operand 33157 states and 41718 transitions. [2020-10-12 18:44:37,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-12 18:44:37,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:44:37,599 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:44:37,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 18:44:37,599 INFO L427 AbstractCegarLoop]: === Iteration 20 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:44:37,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:44:37,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1983262315, now seen corresponding path program 1 times [2020-10-12 18:44:37,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:44:37,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255598432] [2020-10-12 18:44:37,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:44:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:37,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:37,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:37,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:38,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:38,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:38,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:38,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:39,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:39,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:42,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:42,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-12 18:44:42,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 18:44:42,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 18:44:42,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:42,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 18:44:42,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 18:44:42,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-12 18:44:42,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:42,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:44:42,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:42,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:42,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:42,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:44:42,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:42,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 18:44:42,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:42,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:44:42,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:44:42,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 18:44:42,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:42,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:44:42,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:42,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:42,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:42,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:44:42,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:42,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 18:44:42,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:42,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:44:42,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:44:42,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 18:44:42,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:42,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 18:44:42,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:42,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:42,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:42,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:44:42,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:42,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 18:44:42,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:42,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:44:42,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:44:42,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:44:42,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:42,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 18:44:42,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:42,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:42,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:42,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:44:42,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:42,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 18:44:42,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:42,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:44:42,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:44:42,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:44:42,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:42,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-12 18:44:42,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:42,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:42,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:42,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:44:42,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:42,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:44:42,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:42,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:44:42,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:44:42,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:44:42,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:43,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-12 18:44:43,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:43,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:43,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:43,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:44:43,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:43,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:44:43,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:43,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:44:43,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:44:43,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:44:43,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:43,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 18:44:43,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:43,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:43,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:43,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:44:43,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:43,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:44:43,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:43,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:44:43,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:44:43,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:44:43,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:43,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 18:44:43,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:43,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:43,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:43,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:44:43,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:43,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:44:43,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:43,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:44:43,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:44:43,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:44:43,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:43,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-12 18:44:43,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:43,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:43,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:43,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:44:43,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:43,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:44:43,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:43,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:44:43,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:44:43,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:44:43,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:43,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-12 18:44:43,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:43,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:43,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:43,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:44:43,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:43,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 18:44:43,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:43,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:44:43,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:44:43,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 18:44:43,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:43,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-12 18:44:43,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:43,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:43,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:43,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 18:44:43,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:43,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:44:43,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:43,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:44:43,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-12 18:44:43,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:44:43,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:43,113 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-12 18:44:43,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255598432] [2020-10-12 18:44:43,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:44:43,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 18:44:43,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864424348] [2020-10-12 18:44:43,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 18:44:43,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:44:43,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 18:44:43,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2020-10-12 18:44:43,115 INFO L87 Difference]: Start difference. First operand 33157 states and 41718 transitions. Second operand 21 states. [2020-10-12 18:44:43,970 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 89 [2020-10-12 18:44:44,225 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-10-12 18:44:44,704 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2020-10-12 18:44:45,328 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 93 [2020-10-12 18:44:47,735 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-12 18:44:51,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:44:51,205 INFO L93 Difference]: Finished difference Result 81466 states and 101754 transitions. [2020-10-12 18:44:51,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-10-12 18:44:51,206 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 107 [2020-10-12 18:44:51,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:44:51,358 INFO L225 Difference]: With dead ends: 81466 [2020-10-12 18:44:51,358 INFO L226 Difference]: Without dead ends: 57741 [2020-10-12 18:44:51,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1591 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1129, Invalid=4421, Unknown=0, NotChecked=0, Total=5550 [2020-10-12 18:44:51,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57741 states. [2020-10-12 18:44:53,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57741 to 34753. [2020-10-12 18:44:53,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34753 states. [2020-10-12 18:44:53,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34753 states to 34753 states and 43407 transitions. [2020-10-12 18:44:53,787 INFO L78 Accepts]: Start accepts. Automaton has 34753 states and 43407 transitions. Word has length 107 [2020-10-12 18:44:53,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:44:53,787 INFO L479 AbstractCegarLoop]: Abstraction has 34753 states and 43407 transitions. [2020-10-12 18:44:53,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 18:44:53,787 INFO L276 IsEmpty]: Start isEmpty. Operand 34753 states and 43407 transitions. [2020-10-12 18:44:53,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-12 18:44:53,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:44:53,791 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:44:53,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 18:44:53,791 INFO L427 AbstractCegarLoop]: === Iteration 21 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:44:53,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:44:53,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1251294889, now seen corresponding path program 1 times [2020-10-12 18:44:53,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:44:53,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [268860728] [2020-10-12 18:44:53,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:44:53,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:53,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:53,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:55,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:55,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-12 18:44:55,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:44:55,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1400 [2020-10-12 18:44:55,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:55,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:44:55,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 18:44:55,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-12 18:44:55,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:55,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:44:55,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:55,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:55,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:55,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:44:55,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:55,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 18:44:55,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:55,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:44:55,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:44:55,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:44:55,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:55,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:44:55,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:55,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:55,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:55,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:44:55,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:55,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 18:44:55,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:55,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:44:55,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:44:55,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 18:44:55,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:55,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 18:44:55,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:55,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:55,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:55,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:44:55,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:55,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 18:44:55,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:55,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:44:55,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:44:55,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:44:55,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:55,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 18:44:55,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:55,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:55,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:55,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:44:55,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:55,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 18:44:55,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:55,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:44:55,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:44:55,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:44:55,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:55,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-12 18:44:55,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:55,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:55,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:55,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:44:55,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:55,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:44:55,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:55,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:44:55,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:44:55,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:44:55,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:55,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-12 18:44:55,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:55,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:55,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:55,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:44:55,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:55,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:44:55,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:55,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:44:55,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:44:55,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:44:55,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:55,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 18:44:55,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:55,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:55,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:55,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:44:55,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:55,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:44:55,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:55,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:44:55,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:44:55,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:44:55,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:55,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 18:44:55,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:55,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:55,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:55,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:44:55,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:55,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:44:55,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:55,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:44:55,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:44:55,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:44:55,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:55,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-12 18:44:55,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:55,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:55,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:55,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:44:55,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:55,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:44:55,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:55,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:44:55,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:44:55,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:44:55,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:55,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-12 18:44:55,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:55,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:55,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:55,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:44:55,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:55,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 18:44:55,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:55,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:44:55,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:44:55,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 18:44:55,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:55,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-12 18:44:55,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:44:55,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:44:55,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:44:55,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 18:44:55,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:44:55,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:44:55,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:44:55,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:44:55,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-12 18:44:55,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:44:55,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:44:55,688 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-12 18:44:55,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [268860728] [2020-10-12 18:44:55,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:44:55,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 18:44:55,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673255553] [2020-10-12 18:44:55,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 18:44:55,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:44:55,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 18:44:55,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2020-10-12 18:44:55,690 INFO L87 Difference]: Start difference. First operand 34753 states and 43407 transitions. Second operand 18 states. [2020-10-12 18:44:55,915 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 86 [2020-10-12 18:44:56,342 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2020-10-12 18:44:56,954 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2020-10-12 18:44:57,094 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2020-10-12 18:44:57,378 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2020-10-12 18:44:57,926 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2020-10-12 18:44:58,668 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 92 [2020-10-12 18:44:58,832 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2020-10-12 18:44:59,290 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 92 [2020-10-12 18:45:05,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:45:05,144 INFO L93 Difference]: Finished difference Result 101668 states and 126412 transitions. [2020-10-12 18:45:05,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-12 18:45:05,145 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 107 [2020-10-12 18:45:05,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:45:05,343 INFO L225 Difference]: With dead ends: 101668 [2020-10-12 18:45:05,343 INFO L226 Difference]: Without dead ends: 76770 [2020-10-12 18:45:05,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=674, Invalid=2632, Unknown=0, NotChecked=0, Total=3306 [2020-10-12 18:45:05,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76770 states. [2020-10-12 18:45:09,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76770 to 72907. [2020-10-12 18:45:09,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72907 states. [2020-10-12 18:45:09,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72907 states to 72907 states and 90779 transitions. [2020-10-12 18:45:09,993 INFO L78 Accepts]: Start accepts. Automaton has 72907 states and 90779 transitions. Word has length 107 [2020-10-12 18:45:09,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:45:09,993 INFO L479 AbstractCegarLoop]: Abstraction has 72907 states and 90779 transitions. [2020-10-12 18:45:09,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 18:45:09,993 INFO L276 IsEmpty]: Start isEmpty. Operand 72907 states and 90779 transitions. [2020-10-12 18:45:09,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-12 18:45:09,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:45:09,997 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:45:09,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 18:45:09,997 INFO L427 AbstractCegarLoop]: === Iteration 22 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:45:09,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:45:09,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1217436599, now seen corresponding path program 1 times [2020-10-12 18:45:09,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:45:09,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281373089] [2020-10-12 18:45:09,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:45:10,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:45:10,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:45:10,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:45:10,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:45:10,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:45:15,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:45:15,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-12 18:45:15,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:45:15,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 18:45:15,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:45:15,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:45:15,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 18:45:15,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-12 18:45:15,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:45:15,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:45:15,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:45:15,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:45:15,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:45:15,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:45:15,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:45:15,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:45:15,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:45:15,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:45:15,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:45:15,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:45:15,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:45:15,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:45:15,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:45:15,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:45:15,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:45:15,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:45:15,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:45:15,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 18:45:15,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:45:15,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:45:15,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:45:15,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 18:45:15,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:45:15,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 18:45:15,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:45:15,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:45:15,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:45:15,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:45:15,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:45:15,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 18:45:15,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:45:15,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:45:15,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:45:15,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:45:15,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:45:15,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 18:45:15,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:45:15,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:45:15,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:45:15,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:45:15,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:45:15,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:45:15,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:45:15,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:45:15,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:45:15,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:45:15,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:45:15,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-12 18:45:15,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:45:15,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:45:15,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:45:15,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:45:15,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:45:15,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:45:15,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:45:15,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:45:15,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:45:15,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:45:15,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:45:15,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-12 18:45:15,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:45:15,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:45:15,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:45:15,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:45:15,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:45:15,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:45:15,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:45:15,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:45:15,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:45:15,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:45:15,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:45:15,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 18:45:15,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:45:15,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:45:15,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:45:15,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:45:15,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:45:15,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:45:15,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:45:15,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:45:15,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:45:15,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:45:15,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:45:15,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 18:45:15,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:45:15,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:45:15,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:45:15,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:45:15,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:45:15,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:45:15,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:45:15,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:45:15,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:45:15,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:45:15,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:45:15,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-12 18:45:15,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:45:15,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:45:15,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:45:15,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:45:15,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:45:15,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 18:45:15,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:45:15,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:45:15,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:45:15,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 18:45:15,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:45:15,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-12 18:45:15,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:45:15,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:45:15,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:45:15,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:45:15,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:45:15,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:45:15,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:45:15,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:45:15,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 18:45:15,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:45:15,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:45:15,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-12 18:45:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:45:15,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:45:15,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:45:15,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 18:45:15,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:45:15,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:45:15,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:45:15,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:45:15,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-12 18:45:15,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:45:15,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:45:15,472 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-12 18:45:15,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281373089] [2020-10-12 18:45:15,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:45:15,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 18:45:15,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502524908] [2020-10-12 18:45:15,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 18:45:15,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:45:15,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 18:45:15,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2020-10-12 18:45:15,474 INFO L87 Difference]: Start difference. First operand 72907 states and 90779 transitions. Second operand 18 states. [2020-10-12 18:45:16,006 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 86 [2020-10-12 18:45:16,435 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 88 [2020-10-12 18:45:16,827 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 88 [2020-10-12 18:45:17,894 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 88 [2020-10-12 18:45:18,401 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 90 [2020-10-12 18:45:19,002 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 90 [2020-10-12 18:45:19,676 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2020-10-12 18:45:33,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:45:33,996 INFO L93 Difference]: Finished difference Result 267205 states and 335506 transitions. [2020-10-12 18:45:33,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-12 18:45:33,996 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 107 [2020-10-12 18:45:33,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:45:34,486 INFO L225 Difference]: With dead ends: 267205 [2020-10-12 18:45:34,486 INFO L226 Difference]: Without dead ends: 226534 [2020-10-12 18:45:34,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 910 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=771, Invalid=3011, Unknown=0, NotChecked=0, Total=3782 [2020-10-12 18:45:34,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226534 states.