/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/reducercommutativity/sep40-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 18:30:47,116 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 18:30:47,119 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 18:30:47,147 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 18:30:47,148 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 18:30:47,149 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 18:30:47,150 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 18:30:47,152 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 18:30:47,154 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 18:30:47,154 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 18:30:47,155 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 18:30:47,156 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 18:30:47,157 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 18:30:47,158 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 18:30:47,159 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 18:30:47,160 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 18:30:47,161 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 18:30:47,162 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 18:30:47,164 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 18:30:47,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 18:30:47,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 18:30:47,168 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 18:30:47,169 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 18:30:47,170 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 18:30:47,173 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 18:30:47,173 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 18:30:47,173 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 18:30:47,174 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 18:30:47,175 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 18:30:47,176 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 18:30:47,176 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 18:30:47,177 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 18:30:47,177 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 18:30:47,178 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 18:30:47,179 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 18:30:47,179 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 18:30:47,180 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 18:30:47,180 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 18:30:47,181 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 18:30:47,182 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 18:30:47,182 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 18:30:47,183 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 18:30:47,207 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 18:30:47,207 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 18:30:47,208 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 18:30:47,209 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 18:30:47,209 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 18:30:47,209 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 18:30:47,209 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 18:30:47,210 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 18:30:47,210 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 18:30:47,210 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 18:30:47,210 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 18:30:47,210 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 18:30:47,210 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 18:30:47,211 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 18:30:47,211 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 18:30:47,211 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 18:30:47,211 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 18:30:47,211 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 18:30:47,212 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 18:30:47,212 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 18:30:47,212 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 18:30:47,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 18:30:47,212 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 18:30:47,213 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 18:30:47,213 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 18:30:47,213 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 18:30:47,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 18:30:47,213 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 18:30:47,214 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 18:30:47,214 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 18:30:47,508 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 18:30:47,526 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 18:30:47,532 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 18:30:47,535 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 18:30:47,536 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 18:30:47,537 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sep40-1.i [2020-10-12 18:30:47,603 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/88eb5372f/5f3c948d04be45f19863f4d1730ed304/FLAG831d7e43e [2020-10-12 18:30:48,042 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 18:30:48,042 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/sep40-1.i [2020-10-12 18:30:48,049 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/88eb5372f/5f3c948d04be45f19863f4d1730ed304/FLAG831d7e43e [2020-10-12 18:30:48,465 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/88eb5372f/5f3c948d04be45f19863f4d1730ed304 [2020-10-12 18:30:48,477 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 18:30:48,479 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 18:30:48,480 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 18:30:48,481 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 18:30:48,484 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 18:30:48,486 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:30:48" (1/1) ... [2020-10-12 18:30:48,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4076c4d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:30:48, skipping insertion in model container [2020-10-12 18:30:48,491 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:30:48" (1/1) ... [2020-10-12 18:30:48,499 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 18:30:48,517 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 18:30:48,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 18:30:48,732 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 18:30:48,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 18:30:48,771 INFO L208 MainTranslator]: Completed translation [2020-10-12 18:30:48,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:30:48 WrapperNode [2020-10-12 18:30:48,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 18:30:48,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 18:30:48,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 18:30:48,773 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 18:30:48,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:30:48" (1/1) ... [2020-10-12 18:30:48,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:30:48" (1/1) ... [2020-10-12 18:30:48,874 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:30:48" (1/1) ... [2020-10-12 18:30:48,875 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:30:48" (1/1) ... [2020-10-12 18:30:48,884 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:30:48" (1/1) ... [2020-10-12 18:30:48,889 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:30:48" (1/1) ... [2020-10-12 18:30:48,891 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:30:48" (1/1) ... [2020-10-12 18:30:48,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 18:30:48,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 18:30:48,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 18:30:48,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 18:30:48,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:30:48" (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 18:30:48,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 18:30:48,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 18:30:48,954 INFO L138 BoogieDeclarations]: Found implementation of procedure sep [2020-10-12 18:30:48,954 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 18:30:48,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 18:30:48,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 18:30:48,955 INFO L130 BoogieDeclarations]: Found specification of procedure sep [2020-10-12 18:30:48,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 18:30:48,955 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 18:30:48,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 18:30:48,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 18:30:48,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 18:30:48,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 18:30:48,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 18:30:49,305 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 18:30:49,305 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-12 18:30:49,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:30:49 BoogieIcfgContainer [2020-10-12 18:30:49,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 18:30:49,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 18:30:49,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 18:30:49,317 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 18:30:49,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 06:30:48" (1/3) ... [2020-10-12 18:30:49,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56afc14b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:30:49, skipping insertion in model container [2020-10-12 18:30:49,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:30:48" (2/3) ... [2020-10-12 18:30:49,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56afc14b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:30:49, skipping insertion in model container [2020-10-12 18:30:49,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:30:49" (3/3) ... [2020-10-12 18:30:49,321 INFO L109 eAbstractionObserver]: Analyzing ICFG sep40-1.i [2020-10-12 18:30:49,331 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 18:30:49,337 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 18:30:49,351 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 18:30:49,377 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 18:30:49,377 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 18:30:49,377 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 18:30:49,378 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 18:30:49,378 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 18:30:49,378 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 18:30:49,378 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 18:30:49,378 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 18:30:49,397 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-10-12 18:30:49,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 18:30:49,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:30:49,405 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:30:49,406 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:30:49,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:30:49,412 INFO L82 PathProgramCache]: Analyzing trace with hash 794343521, now seen corresponding path program 1 times [2020-10-12 18:30:49,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:30:49,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078476578] [2020-10-12 18:30:49,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:30:49,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:49,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:49,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:49,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:49,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:49,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:49,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:50,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:50,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 18:30:50,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 18:30:50,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1184 [2020-10-12 18:30:50,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:50,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:30:50,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:30:50,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 18:30:50,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 18:30:50,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:30:50,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:50,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:50,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:50,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:30:50,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:50,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:30:50,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:50,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:30:50,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:50,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:30:50,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:30:50,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:30:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:50,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:50,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:50,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:50,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:30:50,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:50,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 18:30:50,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:50,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:30:50,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:50,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:30:50,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:30:51,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 18:30:51,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:51,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:51,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:51,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:51,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:30:51,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:51,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-12 18:30:51,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:51,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:30:51,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:51,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:30:51,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:51,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 18:30:51,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:51,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:51,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:51,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:51,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:30:51,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:51,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-12 18:30:51,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:51,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:30:51,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:51,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:30:51,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:30:51,244 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 18:30:51,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078476578] [2020-10-12 18:30:51,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:30:51,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 18:30:51,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671340411] [2020-10-12 18:30:51,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 18:30:51,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:30:51,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 18:30:51,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-12 18:30:51,277 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 11 states. [2020-10-12 18:30:51,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:30:51,684 INFO L93 Difference]: Finished difference Result 86 states and 126 transitions. [2020-10-12 18:30:51,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 18:30:51,687 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-12 18:30:51,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:30:51,702 INFO L225 Difference]: With dead ends: 86 [2020-10-12 18:30:51,702 INFO L226 Difference]: Without dead ends: 52 [2020-10-12 18:30:51,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-10-12 18:30:51,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-12 18:30:51,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 38. [2020-10-12 18:30:51,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-12 18:30:51,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 50 transitions. [2020-10-12 18:30:51,802 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 50 transitions. Word has length 32 [2020-10-12 18:30:51,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:30:51,803 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 50 transitions. [2020-10-12 18:30:51,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 18:30:51,803 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 50 transitions. [2020-10-12 18:30:51,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-12 18:30:51,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:30:51,806 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:30:51,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 18:30:51,807 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:30:51,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:30:51,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1764294835, now seen corresponding path program 1 times [2020-10-12 18:30:51,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:30:51,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89283455] [2020-10-12 18:30:51,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:30:51,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:51,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:51,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:51,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:51,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:52,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:53,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:53,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-12 18:30:53,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:30:53,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1223 [2020-10-12 18:30:53,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:53,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:30:53,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-12 18:30:53,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 18:30:53,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:53,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:30:53,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:53,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:53,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:53,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:30:53,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:53,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:30:53,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:53,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:30:53,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:53,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:30:53,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:53,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:30:53,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:53,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:53,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:53,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:53,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:30:53,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:53,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:30:53,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:53,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:30:53,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:53,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 18:30:53,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:53,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 18:30:53,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:53,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:53,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:53,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:53,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:30:53,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:53,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 18:30:53,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:53,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:30:53,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:53,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 18:30:53,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:30:53,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 18:30:53,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:53,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:53,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:53,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:30:53,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:53,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 18:30:53,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:53,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:30:53,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:53,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 18:30:53,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:53,151 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 18:30:53,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [89283455] [2020-10-12 18:30:53,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:30:53,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 18:30:53,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667422211] [2020-10-12 18:30:53,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 18:30:53,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:30:53,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 18:30:53,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 18:30:53,155 INFO L87 Difference]: Start difference. First operand 38 states and 50 transitions. Second operand 5 states. [2020-10-12 18:30:53,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:30:53,267 INFO L93 Difference]: Finished difference Result 62 states and 86 transitions. [2020-10-12 18:30:53,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 18:30:53,268 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-10-12 18:30:53,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:30:53,269 INFO L225 Difference]: With dead ends: 62 [2020-10-12 18:30:53,269 INFO L226 Difference]: Without dead ends: 33 [2020-10-12 18:30:53,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-12 18:30:53,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-12 18:30:53,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-10-12 18:30:53,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-12 18:30:53,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2020-10-12 18:30:53,278 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 35 [2020-10-12 18:30:53,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:30:53,279 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2020-10-12 18:30:53,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 18:30:53,279 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2020-10-12 18:30:53,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-12 18:30:53,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:30:53,281 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:30:53,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 18:30:53,282 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:30:53,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:30:53,282 INFO L82 PathProgramCache]: Analyzing trace with hash -738945770, now seen corresponding path program 2 times [2020-10-12 18:30:53,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:30:53,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106393662] [2020-10-12 18:30:53,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:30:53,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:53,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:53,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:53,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:53,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:54,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:58,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:58,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 18:30:58,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:30:58,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 18:30:58,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:58,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:30:58,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:30:58,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:30:58,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:58,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:30:58,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:58,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:58,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:58,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:30:58,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:58,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:30:58,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:58,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:30:58,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:58,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:30:58,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:58,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:30:58,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:58,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:58,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:58,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 18:30:58,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:58,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 18:30:58,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:58,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:30:58,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:58,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:30:58,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:58,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 18:30:58,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:58,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:58,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:58,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:58,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 18:30:58,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:58,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-12 18:30:58,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:58,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:30:58,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:58,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:30:58,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:58,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 18:30:58,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:58,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:58,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:58,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:58,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 18:30:58,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:58,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-12 18:30:58,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:58,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:30:58,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:58,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:30:58,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:30:58,607 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-12 18:30:58,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106393662] [2020-10-12 18:30:58,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:30:58,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 18:30:58,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024098525] [2020-10-12 18:30:58,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 18:30:58,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:30:58,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 18:30:58,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 18:30:58,610 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand 6 states. [2020-10-12 18:30:58,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:30:58,775 INFO L93 Difference]: Finished difference Result 58 states and 74 transitions. [2020-10-12 18:30:58,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 18:30:58,777 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-10-12 18:30:58,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:30:58,778 INFO L225 Difference]: With dead ends: 58 [2020-10-12 18:30:58,779 INFO L226 Difference]: Without dead ends: 36 [2020-10-12 18:30:58,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 18:30:58,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-12 18:30:58,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-10-12 18:30:58,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-12 18:30:58,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2020-10-12 18:30:58,797 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 50 [2020-10-12 18:30:58,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:30:58,797 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2020-10-12 18:30:58,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 18:30:58,798 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2020-10-12 18:30:58,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-12 18:30:58,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:30:58,799 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:30:58,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 18:30:58,800 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:30:58,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:30:58,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1066977793, now seen corresponding path program 3 times [2020-10-12 18:30:58,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:30:58,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1929985282] [2020-10-12 18:30:58,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:30:58,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:58,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:58,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:58,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:58,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:03,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:03,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:03,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 18:31:03,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:31:03,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-12 18:31:03,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:03,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:31:03,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:31:03,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:31:03,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:03,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:31:03,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:03,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:03,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:03,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:31:03,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:03,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:31:03,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:03,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:03,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:03,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:03,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:03,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:31:03,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:03,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:03,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:03,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 18:31:03,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:03,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-12 18:31:03,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:03,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:31:03,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:03,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:31:03,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:03,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 18:31:03,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:03,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:03,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:04,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:04,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 18:31:04,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:04,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-12 18:31:04,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:04,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:31:04,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:04,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:31:04,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:04,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-12 18:31:04,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:04,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:04,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:04,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:04,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 18:31:04,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:04,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-12 18:31:04,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:04,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:31:04,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:04,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:31:04,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:04,134 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 36 proven. 72 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-12 18:31:04,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1929985282] [2020-10-12 18:31:04,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:31:04,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 18:31:04,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453622952] [2020-10-12 18:31:04,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 18:31:04,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:31:04,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 18:31:04,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 18:31:04,137 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand 7 states. [2020-10-12 18:31:04,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:31:04,295 INFO L93 Difference]: Finished difference Result 64 states and 82 transitions. [2020-10-12 18:31:04,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 18:31:04,296 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 59 [2020-10-12 18:31:04,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:31:04,297 INFO L225 Difference]: With dead ends: 64 [2020-10-12 18:31:04,297 INFO L226 Difference]: Without dead ends: 39 [2020-10-12 18:31:04,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-12 18:31:04,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-12 18:31:04,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2020-10-12 18:31:04,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-12 18:31:04,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2020-10-12 18:31:04,305 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 59 [2020-10-12 18:31:04,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:31:04,305 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2020-10-12 18:31:04,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 18:31:04,306 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2020-10-12 18:31:04,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 18:31:04,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:31:04,307 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:31:04,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 18:31:04,307 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:31:04,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:31:04,308 INFO L82 PathProgramCache]: Analyzing trace with hash -65292490, now seen corresponding path program 4 times [2020-10-12 18:31:04,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:31:04,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1955913245] [2020-10-12 18:31:04,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:31:04,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:04,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:04,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:04,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:04,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:09,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:09,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 18:31:09,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:31:09,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 18:31:09,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:09,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:31:09,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:31:09,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:31:09,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:09,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:31:09,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:09,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:09,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:09,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:31:09,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:09,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:31:09,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:09,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:09,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:09,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:09,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:09,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:31:09,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:09,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:09,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:09,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 18:31:09,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:09,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-12 18:31:09,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:09,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:31:09,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:09,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:31:09,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 18:31:09,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 18:31:09,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:09,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:09,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:09,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:09,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 18:31:09,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:09,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-12 18:31:09,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:09,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:31:09,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:09,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:31:09,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:09,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-12 18:31:09,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:09,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:09,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:09,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:09,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 18:31:09,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:09,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-12 18:31:09,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:09,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:31:09,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:09,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:31:09,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:31:09,761 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 66 proven. 132 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-12 18:31:09,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1955913245] [2020-10-12 18:31:09,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:31:09,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 18:31:09,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323314662] [2020-10-12 18:31:09,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 18:31:09,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:31:09,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 18:31:09,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 18:31:09,768 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand 8 states. [2020-10-12 18:31:09,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:31:09,969 INFO L93 Difference]: Finished difference Result 70 states and 90 transitions. [2020-10-12 18:31:09,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 18:31:09,970 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 68 [2020-10-12 18:31:09,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:31:09,971 INFO L225 Difference]: With dead ends: 70 [2020-10-12 18:31:09,971 INFO L226 Difference]: Without dead ends: 42 [2020-10-12 18:31:09,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:31:09,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-12 18:31:09,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-10-12 18:31:09,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-12 18:31:09,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2020-10-12 18:31:09,979 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 68 [2020-10-12 18:31:09,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:31:09,979 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2020-10-12 18:31:09,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 18:31:09,979 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2020-10-12 18:31:09,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-12 18:31:09,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:31:09,981 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:31:09,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 18:31:09,981 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:31:09,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:31:09,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1783214881, now seen corresponding path program 5 times [2020-10-12 18:31:09,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:31:09,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [5968273] [2020-10-12 18:31:09,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:31:09,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:09,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:10,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:10,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:10,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:14,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:14,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-12 18:31:14,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:31:14,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 18:31:14,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:14,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:31:14,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-12 18:31:14,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 18:31:14,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:15,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:31:15,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:15,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:15,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:15,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:31:15,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:15,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:31:15,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:15,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:15,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:15,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:15,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:15,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:31:15,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:15,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:15,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:15,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:15,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:31:15,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:15,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-12 18:31:15,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:15,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:31:15,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:15,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 18:31:15,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:15,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 18:31:15,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:15,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:15,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:15,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:31:15,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:15,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-12 18:31:15,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:15,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:31:15,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:15,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 18:31:15,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:15,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-12 18:31:15,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:15,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:15,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:15,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:15,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:31:15,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:15,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-12 18:31:15,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:15,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:31:15,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:15,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 18:31:15,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:15,460 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 105 proven. 210 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-12 18:31:15,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [5968273] [2020-10-12 18:31:15,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:31:15,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 18:31:15,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944070840] [2020-10-12 18:31:15,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 18:31:15,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:31:15,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 18:31:15,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 18:31:15,462 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand 9 states. [2020-10-12 18:31:15,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:31:15,690 INFO L93 Difference]: Finished difference Result 76 states and 98 transitions. [2020-10-12 18:31:15,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 18:31:15,691 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 77 [2020-10-12 18:31:15,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:31:15,692 INFO L225 Difference]: With dead ends: 76 [2020-10-12 18:31:15,692 INFO L226 Difference]: Without dead ends: 45 [2020-10-12 18:31:15,693 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-12 18:31:15,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-12 18:31:15,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2020-10-12 18:31:15,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-12 18:31:15,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2020-10-12 18:31:15,700 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 77 [2020-10-12 18:31:15,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:31:15,700 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2020-10-12 18:31:15,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 18:31:15,700 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2020-10-12 18:31:15,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-12 18:31:15,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:31:15,702 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:31:15,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 18:31:15,702 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:31:15,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:31:15,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1461104298, now seen corresponding path program 6 times [2020-10-12 18:31:15,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:31:15,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1764679851] [2020-10-12 18:31:15,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:31:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:15,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:15,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:15,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:15,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:20,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:20,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 18:31:20,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:31:20,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 18:31:20,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:20,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:31:20,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-12 18:31:20,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 18:31:20,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:20,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:31:20,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:20,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:20,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:20,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:31:20,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:20,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:31:20,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:20,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:20,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:20,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:20,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:20,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:31:20,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:20,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:20,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:20,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:20,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 18:31:20,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:20,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-12 18:31:20,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:20,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:31:20,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:20,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 18:31:20,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:20,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-12 18:31:20,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:20,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:21,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:21,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 18:31:21,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:21,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-12 18:31:21,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:21,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:31:21,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:21,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 18:31:21,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:21,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-12 18:31:21,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:21,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:21,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:21,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:21,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 18:31:21,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:21,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-12 18:31:21,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:21,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:31:21,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:21,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 18:31:21,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:21,232 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 153 proven. 306 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-12 18:31:21,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1764679851] [2020-10-12 18:31:21,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:31:21,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 18:31:21,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483052107] [2020-10-12 18:31:21,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 18:31:21,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:31:21,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 18:31:21,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-12 18:31:21,236 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand 10 states. [2020-10-12 18:31:21,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:31:21,444 INFO L93 Difference]: Finished difference Result 82 states and 106 transitions. [2020-10-12 18:31:21,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 18:31:21,445 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 86 [2020-10-12 18:31:21,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:31:21,447 INFO L225 Difference]: With dead ends: 82 [2020-10-12 18:31:21,447 INFO L226 Difference]: Without dead ends: 48 [2020-10-12 18:31:21,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-12 18:31:21,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-12 18:31:21,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-10-12 18:31:21,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-12 18:31:21,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2020-10-12 18:31:21,457 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 86 [2020-10-12 18:31:21,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:31:21,458 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2020-10-12 18:31:21,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 18:31:21,458 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2020-10-12 18:31:21,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-12 18:31:21,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:31:21,460 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:31:21,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 18:31:21,460 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:31:21,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:31:21,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1543869505, now seen corresponding path program 7 times [2020-10-12 18:31:21,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:31:21,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289815478] [2020-10-12 18:31:21,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:31:21,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:21,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:21,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:21,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:21,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:26,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:26,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-12 18:31:26,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:31:26,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-12 18:31:26,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:26,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:31:26,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-12 18:31:26,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 18:31:26,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:26,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:31:26,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:26,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:26,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:26,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:31:26,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:26,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:31:26,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:26,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:26,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:26,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:26,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:26,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:31:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:26,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:26,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:26,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:26,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 18:31:26,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:26,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-12 18:31:26,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:26,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:31:26,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:26,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 18:31:26,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:26,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 18:31:26,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:26,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:26,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:26,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 18:31:26,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:26,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-12 18:31:26,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:26,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:31:26,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:26,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 18:31:26,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:31:26,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-12 18:31:26,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:26,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:26,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:27,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:27,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 18:31:27,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:27,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-12 18:31:27,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:27,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:31:27,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:27,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 18:31:27,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:27,186 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 210 proven. 420 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-12 18:31:27,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289815478] [2020-10-12 18:31:27,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:31:27,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 18:31:27,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048607364] [2020-10-12 18:31:27,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 18:31:27,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:31:27,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 18:31:27,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-12 18:31:27,189 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand 11 states. [2020-10-12 18:31:27,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:31:27,440 INFO L93 Difference]: Finished difference Result 88 states and 114 transitions. [2020-10-12 18:31:27,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 18:31:27,440 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 95 [2020-10-12 18:31:27,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:31:27,442 INFO L225 Difference]: With dead ends: 88 [2020-10-12 18:31:27,442 INFO L226 Difference]: Without dead ends: 51 [2020-10-12 18:31:27,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-12 18:31:27,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-12 18:31:27,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2020-10-12 18:31:27,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-12 18:31:27,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 61 transitions. [2020-10-12 18:31:27,456 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 61 transitions. Word has length 95 [2020-10-12 18:31:27,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:31:27,457 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 61 transitions. [2020-10-12 18:31:27,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 18:31:27,457 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 61 transitions. [2020-10-12 18:31:27,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-12 18:31:27,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:31:27,458 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:31:27,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 18:31:27,459 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:31:27,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:31:27,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1095277706, now seen corresponding path program 8 times [2020-10-12 18:31:27,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:31:27,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110285820] [2020-10-12 18:31:27,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:31:27,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:27,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:27,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:27,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:27,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:32,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:32,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 18:31:32,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:31:32,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-12 18:31:32,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:32,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:31:32,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:31:32,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 18:31:32,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:32,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:31:32,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:32,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:32,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:32,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:31:32,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:32,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:31:32,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:32,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:32,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:32,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:32,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:32,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:31:32,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:32,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:32,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:32,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 18:31:32,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:32,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-12 18:31:32,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:32,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:31:32,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:32,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 18:31:32,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:32,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 18:31:32,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:32,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:32,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:32,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:32,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 18:31:32,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:32,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-12 18:31:32,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:32,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:31:32,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:32,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 18:31:32,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:32,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-12 18:31:32,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:32,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:32,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:33,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:33,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 18:31:33,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:33,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-12 18:31:33,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:33,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:31:33,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:33,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 18:31:33,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:33,075 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 276 proven. 552 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-12 18:31:33,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110285820] [2020-10-12 18:31:33,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:31:33,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 18:31:33,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161413462] [2020-10-12 18:31:33,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 18:31:33,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:31:33,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 18:31:33,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-12 18:31:33,078 INFO L87 Difference]: Start difference. First operand 49 states and 61 transitions. Second operand 12 states. [2020-10-12 18:31:33,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:31:33,382 INFO L93 Difference]: Finished difference Result 94 states and 122 transitions. [2020-10-12 18:31:33,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 18:31:33,383 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 104 [2020-10-12 18:31:33,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:31:33,384 INFO L225 Difference]: With dead ends: 94 [2020-10-12 18:31:33,384 INFO L226 Difference]: Without dead ends: 54 [2020-10-12 18:31:33,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-12 18:31:33,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-12 18:31:33,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2020-10-12 18:31:33,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-12 18:31:33,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2020-10-12 18:31:33,399 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 104 [2020-10-12 18:31:33,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:31:33,399 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2020-10-12 18:31:33,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 18:31:33,400 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2020-10-12 18:31:33,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-12 18:31:33,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:31:33,400 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:31:33,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 18:31:33,401 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:31:33,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:31:33,401 INFO L82 PathProgramCache]: Analyzing trace with hash -799436129, now seen corresponding path program 9 times [2020-10-12 18:31:33,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:31:33,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020978535] [2020-10-12 18:31:33,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:31:33,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:33,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:33,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:33,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:33,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:38,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:38,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-12 18:31:38,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:31:38,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-12 18:31:38,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:38,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:31:38,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-12 18:31:38,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 18:31:38,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:38,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:31:38,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:38,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:38,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:38,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:31:38,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:38,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:31:38,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:38,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:38,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:38,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:38,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:38,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:31:38,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:38,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:38,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:38,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:38,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 18:31:38,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:38,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-12 18:31:38,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:38,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:31:38,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:38,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 18:31:38,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:38,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-12 18:31:38,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:38,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:38,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:38,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 18:31:38,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:38,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-12 18:31:38,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:38,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:31:38,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:38,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 18:31:38,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:38,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-12 18:31:38,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:38,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:39,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:39,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:39,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 18:31:39,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:39,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-12 18:31:39,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:39,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:31:39,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:39,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 18:31:39,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:39,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1149 backedges. 351 proven. 702 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-12 18:31:39,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020978535] [2020-10-12 18:31:39,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:31:39,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 18:31:39,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279829187] [2020-10-12 18:31:39,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 18:31:39,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:31:39,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 18:31:39,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:31:39,137 INFO L87 Difference]: Start difference. First operand 52 states and 65 transitions. Second operand 13 states. [2020-10-12 18:31:39,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:31:39,459 INFO L93 Difference]: Finished difference Result 100 states and 130 transitions. [2020-10-12 18:31:39,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 18:31:39,460 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 113 [2020-10-12 18:31:39,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:31:39,461 INFO L225 Difference]: With dead ends: 100 [2020-10-12 18:31:39,462 INFO L226 Difference]: Without dead ends: 57 [2020-10-12 18:31:39,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-12 18:31:39,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-12 18:31:39,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2020-10-12 18:31:39,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-12 18:31:39,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 69 transitions. [2020-10-12 18:31:39,470 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 69 transitions. Word has length 113 [2020-10-12 18:31:39,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:31:39,470 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 69 transitions. [2020-10-12 18:31:39,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 18:31:39,471 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 69 transitions. [2020-10-12 18:31:39,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 18:31:39,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:31:39,472 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:31:39,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 18:31:39,472 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:31:39,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:31:39,473 INFO L82 PathProgramCache]: Analyzing trace with hash -178262634, now seen corresponding path program 10 times [2020-10-12 18:31:39,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:31:39,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [547722955] [2020-10-12 18:31:39,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:31:39,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:39,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:39,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:39,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:39,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:44,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:44,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-12 18:31:44,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:31:44,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 18:31:44,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:44,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:31:44,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:31:44,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 18:31:44,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:44,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:31:44,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:44,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:44,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:44,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:31:44,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:44,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:31:44,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:44,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:44,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:44,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:44,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:44,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:31:44,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:44,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:44,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:44,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 18:31:44,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:44,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-12 18:31:44,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:44,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:31:44,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:44,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 18:31:44,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:44,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 18:31:44,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:44,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:44,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:45,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:45,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 18:31:45,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:45,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 492 [2020-10-12 18:31:45,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:45,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:31:45,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:45,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 18:31:45,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:31:45,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 18:31:45,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:45,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:45,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:45,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:45,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 18:31:45,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:45,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 512 [2020-10-12 18:31:45,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:45,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:31:45,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:45,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 18:31:45,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:45,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 435 proven. 870 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-12 18:31:45,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [547722955] [2020-10-12 18:31:45,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:31:45,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 18:31:45,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31049014] [2020-10-12 18:31:45,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 18:31:45,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:31:45,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 18:31:45,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-12 18:31:45,929 INFO L87 Difference]: Start difference. First operand 55 states and 69 transitions. Second operand 14 states. [2020-10-12 18:31:46,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:31:46,284 INFO L93 Difference]: Finished difference Result 106 states and 138 transitions. [2020-10-12 18:31:46,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 18:31:46,285 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 122 [2020-10-12 18:31:46,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:31:46,286 INFO L225 Difference]: With dead ends: 106 [2020-10-12 18:31:46,287 INFO L226 Difference]: Without dead ends: 60 [2020-10-12 18:31:46,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-12 18:31:46,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-12 18:31:46,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2020-10-12 18:31:46,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-12 18:31:46,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 73 transitions. [2020-10-12 18:31:46,298 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 73 transitions. Word has length 122 [2020-10-12 18:31:46,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:31:46,299 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 73 transitions. [2020-10-12 18:31:46,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 18:31:46,299 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 73 transitions. [2020-10-12 18:31:46,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-12 18:31:46,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:31:46,300 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:31:46,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 18:31:46,300 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:31:46,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:31:46,300 INFO L82 PathProgramCache]: Analyzing trace with hash 2088354175, now seen corresponding path program 11 times [2020-10-12 18:31:46,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:31:46,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147371713] [2020-10-12 18:31:46,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:31:46,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:46,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:46,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:46,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:46,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:51,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:51,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-12 18:31:51,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:31:51,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 18:31:51,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:51,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:31:51,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-12 18:31:51,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 18:31:51,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:51,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:31:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:51,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:51,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:51,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:31:51,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:51,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:31:51,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:51,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:51,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:51,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:51,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:51,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:31:51,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:51,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:51,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:51,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:51,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-12 18:31:51,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:51,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 312 [2020-10-12 18:31:51,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:51,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:31:51,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:51,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 18:31:51,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:51,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-12 18:31:51,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:51,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:52,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:52,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-12 18:31:52,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:52,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-12 18:31:52,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:52,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:31:52,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:52,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 18:31:52,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:52,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-12 18:31:52,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:52,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:52,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:52,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:52,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-12 18:31:52,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:52,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 515 [2020-10-12 18:31:52,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:52,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:31:52,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:52,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 18:31:52,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:31:52,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1698 backedges. 528 proven. 1056 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-12 18:31:52,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147371713] [2020-10-12 18:31:52,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:31:52,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 18:31:52,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564265756] [2020-10-12 18:31:52,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 18:31:52,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:31:52,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 18:31:52,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-12 18:31:52,626 INFO L87 Difference]: Start difference. First operand 58 states and 73 transitions. Second operand 15 states. [2020-10-12 18:31:53,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:31:53,111 INFO L93 Difference]: Finished difference Result 112 states and 146 transitions. [2020-10-12 18:31:53,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 18:31:53,112 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 131 [2020-10-12 18:31:53,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:31:53,113 INFO L225 Difference]: With dead ends: 112 [2020-10-12 18:31:53,113 INFO L226 Difference]: Without dead ends: 63 [2020-10-12 18:31:53,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-12 18:31:53,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-12 18:31:53,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2020-10-12 18:31:53,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-12 18:31:53,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 77 transitions. [2020-10-12 18:31:53,133 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 77 transitions. Word has length 131 [2020-10-12 18:31:53,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:31:53,134 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 77 transitions. [2020-10-12 18:31:53,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 18:31:53,134 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 77 transitions. [2020-10-12 18:31:53,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-12 18:31:53,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:31:53,141 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:31:53,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 18:31:53,142 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:31:53,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:31:53,143 INFO L82 PathProgramCache]: Analyzing trace with hash 2017259446, now seen corresponding path program 12 times [2020-10-12 18:31:53,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:31:53,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [766909182] [2020-10-12 18:31:53,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:31:53,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:53,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:53,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:53,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:53,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:58,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:58,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-12 18:31:58,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:31:58,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-12 18:31:58,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:58,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:31:58,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 18:31:58,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:31:58,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:31:58,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:31:58,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:58,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:58,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:58,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:31:58,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:58,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:31:58,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:58,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:58,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:58,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:58,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:31:58,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:31:58,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:58,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:58,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:58,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:58,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 18:31:58,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:58,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 523 [2020-10-12 18:31:58,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:58,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:31:58,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:58,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:31:58,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:58,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-12 18:31:58,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:58,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:59,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:59,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 18:31:59,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:59,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 459 [2020-10-12 18:31:59,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:59,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:31:59,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:59,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:31:59,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:59,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 18:31:59,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:59,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:59,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:59,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:59,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 18:31:59,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:59,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 405 [2020-10-12 18:31:59,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:59,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:31:59,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:59,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:31:59,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:59,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2013 backedges. 630 proven. 1260 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-12 18:31:59,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [766909182] [2020-10-12 18:31:59,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:31:59,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 18:31:59,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115225208] [2020-10-12 18:31:59,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 18:31:59,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:31:59,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 18:31:59,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-12 18:31:59,857 INFO L87 Difference]: Start difference. First operand 61 states and 77 transitions. Second operand 16 states. [2020-10-12 18:32:00,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:00,237 INFO L93 Difference]: Finished difference Result 118 states and 154 transitions. [2020-10-12 18:32:00,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 18:32:00,238 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 140 [2020-10-12 18:32:00,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:00,239 INFO L225 Difference]: With dead ends: 118 [2020-10-12 18:32:00,239 INFO L226 Difference]: Without dead ends: 66 [2020-10-12 18:32:00,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-12 18:32:00,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-12 18:32:00,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-10-12 18:32:00,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-12 18:32:00,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 81 transitions. [2020-10-12 18:32:00,247 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 81 transitions. Word has length 140 [2020-10-12 18:32:00,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:00,248 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 81 transitions. [2020-10-12 18:32:00,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 18:32:00,248 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 81 transitions. [2020-10-12 18:32:00,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-12 18:32:00,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:00,250 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:00,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 18:32:00,250 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:00,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:00,250 INFO L82 PathProgramCache]: Analyzing trace with hash -427755425, now seen corresponding path program 13 times [2020-10-12 18:32:00,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:00,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626662943] [2020-10-12 18:32:00,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:00,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:00,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:00,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:00,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:00,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:05,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:05,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-12 18:32:05,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:32:05,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-12 18:32:05,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:05,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 18:32:05,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-12 18:32:05,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 18:32:05,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:05,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:05,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:05,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:05,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:05,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:05,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:05,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:32:05,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:05,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:05,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:05,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:05,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:05,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:32:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:05,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:05,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:05,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:05,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-12 18:32:05,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:05,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 433 [2020-10-12 18:32:05,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:05,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 18:32:05,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:05,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 18:32:05,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:05,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-12 18:32:05,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:05,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:06,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:06,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-12 18:32:06,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:06,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-12 18:32:06,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:06,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 18:32:06,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:06,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 18:32:06,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:06,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-12 18:32:06,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:06,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:06,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:06,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:06,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-12 18:32:06,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:06,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 362 [2020-10-12 18:32:06,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:06,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 18:32:06,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:06,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 18:32:06,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:06,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2355 backedges. 741 proven. 1482 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-10-12 18:32:06,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1626662943] [2020-10-12 18:32:06,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:06,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 18:32:06,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795402322] [2020-10-12 18:32:06,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 18:32:06,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:06,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 18:32:06,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-12 18:32:06,626 INFO L87 Difference]: Start difference. First operand 64 states and 81 transitions. Second operand 17 states. [2020-10-12 18:32:07,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:07,068 INFO L93 Difference]: Finished difference Result 124 states and 162 transitions. [2020-10-12 18:32:07,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 18:32:07,069 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 149 [2020-10-12 18:32:07,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:07,070 INFO L225 Difference]: With dead ends: 124 [2020-10-12 18:32:07,071 INFO L226 Difference]: Without dead ends: 69 [2020-10-12 18:32:07,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-12 18:32:07,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-12 18:32:07,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2020-10-12 18:32:07,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-12 18:32:07,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 85 transitions. [2020-10-12 18:32:07,078 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 85 transitions. Word has length 149 [2020-10-12 18:32:07,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:07,079 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 85 transitions. [2020-10-12 18:32:07,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 18:32:07,079 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 85 transitions. [2020-10-12 18:32:07,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-12 18:32:07,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:07,081 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:07,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 18:32:07,081 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:07,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:07,081 INFO L82 PathProgramCache]: Analyzing trace with hash -2044171818, now seen corresponding path program 14 times [2020-10-12 18:32:07,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:07,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [670476181] [2020-10-12 18:32:07,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:07,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:07,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:07,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:07,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:07,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:12,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:12,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-12 18:32:12,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:32:12,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 18:32:12,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:12,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 18:32:12,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-12 18:32:12,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 18:32:12,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:12,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:12,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:12,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:12,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:12,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:12,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:12,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:32:12,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:12,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:12,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:12,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:12,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:12,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:32:12,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:12,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:12,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:12,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:12,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 18:32:12,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:12,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 413 [2020-10-12 18:32:12,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:12,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 18:32:12,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:12,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 18:32:12,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:12,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-12 18:32:12,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:12,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:13,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:13,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 18:32:13,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:13,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-10-12 18:32:13,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:13,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 18:32:13,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:13,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 18:32:13,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:13,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-12 18:32:13,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:13,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:13,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:13,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:13,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 18:32:13,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:13,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 413 [2020-10-12 18:32:13,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:13,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 18:32:13,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:13,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 18:32:13,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:13,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2724 backedges. 861 proven. 1722 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-10-12 18:32:13,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [670476181] [2020-10-12 18:32:13,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:13,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 18:32:13,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574166347] [2020-10-12 18:32:13,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 18:32:13,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:13,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 18:32:13,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-12 18:32:13,533 INFO L87 Difference]: Start difference. First operand 67 states and 85 transitions. Second operand 18 states. [2020-10-12 18:32:14,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:14,002 INFO L93 Difference]: Finished difference Result 130 states and 170 transitions. [2020-10-12 18:32:14,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 18:32:14,003 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 158 [2020-10-12 18:32:14,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:14,004 INFO L225 Difference]: With dead ends: 130 [2020-10-12 18:32:14,004 INFO L226 Difference]: Without dead ends: 72 [2020-10-12 18:32:14,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 18:32:14,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-12 18:32:14,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2020-10-12 18:32:14,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-12 18:32:14,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 89 transitions. [2020-10-12 18:32:14,011 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 89 transitions. Word has length 158 [2020-10-12 18:32:14,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:14,012 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 89 transitions. [2020-10-12 18:32:14,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 18:32:14,012 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 89 transitions. [2020-10-12 18:32:14,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-12 18:32:14,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:14,014 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:14,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 18:32:14,014 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:14,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:14,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1995098305, now seen corresponding path program 15 times [2020-10-12 18:32:14,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:14,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875819045] [2020-10-12 18:32:14,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:14,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:14,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:14,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:14,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:14,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:19,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:19,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-12 18:32:19,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:32:19,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-12 18:32:19,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:19,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 18:32:19,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:32:19,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-12 18:32:19,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:19,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:19,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:19,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:19,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:19,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:19,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:19,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:32:19,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:19,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:19,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:19,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:19,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:19,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:32:19,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:19,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:19,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:19,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-12 18:32:19,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:19,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 367 [2020-10-12 18:32:19,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:19,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 18:32:19,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:19,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-12 18:32:19,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:19,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-12 18:32:19,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:19,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:19,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:20,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:20,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-12 18:32:20,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:20,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 507 [2020-10-12 18:32:20,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:20,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 18:32:20,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:20,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-12 18:32:20,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:20,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-12 18:32:20,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:20,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:20,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:20,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:20,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-12 18:32:20,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:20,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 481 [2020-10-12 18:32:20,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:20,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 18:32:20,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:20,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-12 18:32:20,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:20,692 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 990 proven. 1980 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2020-10-12 18:32:20,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875819045] [2020-10-12 18:32:20,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:20,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 18:32:20,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620944602] [2020-10-12 18:32:20,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 18:32:20,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:20,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 18:32:20,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-12 18:32:20,694 INFO L87 Difference]: Start difference. First operand 70 states and 89 transitions. Second operand 19 states. [2020-10-12 18:32:21,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:21,179 INFO L93 Difference]: Finished difference Result 136 states and 178 transitions. [2020-10-12 18:32:21,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 18:32:21,180 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 167 [2020-10-12 18:32:21,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:21,181 INFO L225 Difference]: With dead ends: 136 [2020-10-12 18:32:21,181 INFO L226 Difference]: Without dead ends: 75 [2020-10-12 18:32:21,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 18:32:21,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-12 18:32:21,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2020-10-12 18:32:21,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-12 18:32:21,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 93 transitions. [2020-10-12 18:32:21,187 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 93 transitions. Word has length 167 [2020-10-12 18:32:21,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:21,188 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 93 transitions. [2020-10-12 18:32:21,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 18:32:21,188 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 93 transitions. [2020-10-12 18:32:21,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-12 18:32:21,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:21,190 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 48, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:21,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 18:32:21,191 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:21,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:21,191 INFO L82 PathProgramCache]: Analyzing trace with hash 293362678, now seen corresponding path program 16 times [2020-10-12 18:32:21,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:21,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383829703] [2020-10-12 18:32:21,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:21,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:21,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:21,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:21,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:21,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:26,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:26,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-12 18:32:26,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:32:26,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-12 18:32:26,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:26,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 18:32:26,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-12 18:32:26,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 18:32:26,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:26,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:26,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:26,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:26,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:26,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:26,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:26,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:32:26,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:26,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:26,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:26,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:26,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:26,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:32:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:26,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:26,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:26,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:26,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 18:32:26,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:26,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 549 [2020-10-12 18:32:26,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:26,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 18:32:26,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:26,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 18:32:26,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:27,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-12 18:32:27,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:27,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:27,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:27,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 18:32:27,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:27,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 429 [2020-10-12 18:32:27,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:27,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 18:32:27,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:27,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 18:32:27,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:27,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-12 18:32:27,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:27,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:27,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:28,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:28,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 18:32:28,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:28,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 613 [2020-10-12 18:32:28,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:28,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 18:32:28,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:28,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 18:32:28,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:28,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3543 backedges. 1128 proven. 2256 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-12 18:32:28,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383829703] [2020-10-12 18:32:28,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:28,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 18:32:28,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300217035] [2020-10-12 18:32:28,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 18:32:28,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:28,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 18:32:28,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-12 18:32:28,176 INFO L87 Difference]: Start difference. First operand 73 states and 93 transitions. Second operand 20 states. [2020-10-12 18:32:28,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:28,708 INFO L93 Difference]: Finished difference Result 142 states and 186 transitions. [2020-10-12 18:32:28,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 18:32:28,709 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 176 [2020-10-12 18:32:28,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:28,710 INFO L225 Difference]: With dead ends: 142 [2020-10-12 18:32:28,710 INFO L226 Difference]: Without dead ends: 78 [2020-10-12 18:32:28,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 18:32:28,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-12 18:32:28,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-10-12 18:32:28,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-12 18:32:28,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 97 transitions. [2020-10-12 18:32:28,717 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 97 transitions. Word has length 176 [2020-10-12 18:32:28,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:28,717 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 97 transitions. [2020-10-12 18:32:28,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 18:32:28,718 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 97 transitions. [2020-10-12 18:32:28,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-12 18:32:28,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:28,720 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 51, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:28,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 18:32:28,720 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:28,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:28,721 INFO L82 PathProgramCache]: Analyzing trace with hash 2069659167, now seen corresponding path program 17 times [2020-10-12 18:32:28,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:28,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993161048] [2020-10-12 18:32:28,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:28,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:28,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:28,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:28,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:28,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:33,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:33,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-12 18:32:33,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:32:33,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-12 18:32:33,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:33,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 18:32:33,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:32:33,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 18:32:33,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:33,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:33,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:33,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:33,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:33,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:33,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:33,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:32:33,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:33,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:33,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:33,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:33,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:33,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:32:33,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:33,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:34,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:34,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-12 18:32:34,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:34,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 451 [2020-10-12 18:32:34,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:34,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 18:32:34,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:34,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 18:32:34,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:34,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-12 18:32:34,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:34,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:34,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:34,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:34,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-12 18:32:34,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:34,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 509 [2020-10-12 18:32:34,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:34,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 18:32:34,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:34,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 18:32:34,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:35,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-12 18:32:35,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:35,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:35,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:35,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:35,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-12 18:32:35,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:35,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 462 [2020-10-12 18:32:35,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:35,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 18:32:35,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:35,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 18:32:35,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:35,510 INFO L134 CoverageAnalysis]: Checked inductivity of 3993 backedges. 1275 proven. 2550 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2020-10-12 18:32:35,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993161048] [2020-10-12 18:32:35,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:35,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 18:32:35,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794755820] [2020-10-12 18:32:35,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 18:32:35,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:35,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 18:32:35,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-12 18:32:35,512 INFO L87 Difference]: Start difference. First operand 76 states and 97 transitions. Second operand 21 states. [2020-10-12 18:32:36,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:36,034 INFO L93 Difference]: Finished difference Result 148 states and 194 transitions. [2020-10-12 18:32:36,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 18:32:36,035 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 185 [2020-10-12 18:32:36,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:36,036 INFO L225 Difference]: With dead ends: 148 [2020-10-12 18:32:36,036 INFO L226 Difference]: Without dead ends: 81 [2020-10-12 18:32:36,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 18:32:36,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-12 18:32:36,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2020-10-12 18:32:36,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-12 18:32:36,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 101 transitions. [2020-10-12 18:32:36,043 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 101 transitions. Word has length 185 [2020-10-12 18:32:36,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:36,044 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 101 transitions. [2020-10-12 18:32:36,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 18:32:36,044 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 101 transitions. [2020-10-12 18:32:36,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-12 18:32:36,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:36,046 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 54, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:36,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 18:32:36,047 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:36,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:36,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1611843094, now seen corresponding path program 18 times [2020-10-12 18:32:36,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:36,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025873427] [2020-10-12 18:32:36,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:36,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:36,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:36,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:36,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:36,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:41,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:41,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-12 18:32:41,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:32:41,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-12 18:32:41,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:41,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 18:32:41,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-12 18:32:41,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 18:32:41,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:41,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:41,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:41,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:41,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:41,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:41,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:41,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:32:41,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:41,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:41,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:41,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:41,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:41,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:32:41,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:41,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:41,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:41,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:41,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 18:32:41,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:41,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 709 [2020-10-12 18:32:41,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:41,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 18:32:41,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:41,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 18:32:41,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:42,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-12 18:32:42,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:42,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:42,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:42,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 18:32:42,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:42,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 536 [2020-10-12 18:32:42,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:42,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 18:32:42,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:42,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 18:32:42,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:42,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-12 18:32:42,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:42,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:42,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:43,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:43,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 18:32:43,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:43,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 601 [2020-10-12 18:32:43,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:43,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 18:32:43,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:43,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 18:32:43,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:43,319 INFO L134 CoverageAnalysis]: Checked inductivity of 4470 backedges. 1431 proven. 2862 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-10-12 18:32:43,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2025873427] [2020-10-12 18:32:43,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:43,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-12 18:32:43,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301772658] [2020-10-12 18:32:43,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-12 18:32:43,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:43,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-12 18:32:43,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-12 18:32:43,321 INFO L87 Difference]: Start difference. First operand 79 states and 101 transitions. Second operand 22 states. [2020-10-12 18:32:43,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:43,918 INFO L93 Difference]: Finished difference Result 154 states and 202 transitions. [2020-10-12 18:32:43,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 18:32:43,919 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 194 [2020-10-12 18:32:43,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:43,920 INFO L225 Difference]: With dead ends: 154 [2020-10-12 18:32:43,920 INFO L226 Difference]: Without dead ends: 84 [2020-10-12 18:32:43,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2020-10-12 18:32:43,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-12 18:32:43,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2020-10-12 18:32:43,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-12 18:32:43,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 105 transitions. [2020-10-12 18:32:43,928 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 105 transitions. Word has length 194 [2020-10-12 18:32:43,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:43,929 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 105 transitions. [2020-10-12 18:32:43,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-12 18:32:43,929 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 105 transitions. [2020-10-12 18:32:43,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-12 18:32:43,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:43,931 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 57, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:43,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 18:32:43,931 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:43,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:43,932 INFO L82 PathProgramCache]: Analyzing trace with hash -788738817, now seen corresponding path program 19 times [2020-10-12 18:32:43,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:43,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199895270] [2020-10-12 18:32:43,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:43,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:43,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:43,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:44,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:44,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:48,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:48,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-12 18:32:48,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:32:48,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 18:32:48,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:48,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 18:32:48,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:32:48,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 18:32:48,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:48,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:48,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:48,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:48,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:48,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:48,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:48,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:32:48,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:48,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:48,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:48,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:48,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:48,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:32:48,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:49,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:49,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:49,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-12 18:32:49,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:49,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 593 [2020-10-12 18:32:49,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:49,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 18:32:49,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:49,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 18:32:49,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:49,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-12 18:32:49,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:49,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:49,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:50,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:50,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-12 18:32:50,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:50,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 626 [2020-10-12 18:32:50,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:50,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 18:32:50,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:50,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 18:32:50,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:50,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-12 18:32:50,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:50,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:50,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:51,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:51,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-12 18:32:51,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:51,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 640 [2020-10-12 18:32:51,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:51,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 18:32:51,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:51,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 18:32:51,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:51,213 INFO L134 CoverageAnalysis]: Checked inductivity of 4974 backedges. 1596 proven. 3192 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2020-10-12 18:32:51,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199895270] [2020-10-12 18:32:51,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:51,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-12 18:32:51,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876518574] [2020-10-12 18:32:51,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-12 18:32:51,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:51,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-12 18:32:51,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-12 18:32:51,215 INFO L87 Difference]: Start difference. First operand 82 states and 105 transitions. Second operand 23 states. [2020-10-12 18:32:51,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:51,913 INFO L93 Difference]: Finished difference Result 160 states and 210 transitions. [2020-10-12 18:32:51,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 18:32:51,913 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 203 [2020-10-12 18:32:51,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:51,914 INFO L225 Difference]: With dead ends: 160 [2020-10-12 18:32:51,915 INFO L226 Difference]: Without dead ends: 87 [2020-10-12 18:32:51,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2020-10-12 18:32:51,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-12 18:32:51,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2020-10-12 18:32:51,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-12 18:32:51,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 109 transitions. [2020-10-12 18:32:51,922 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 109 transitions. Word has length 203 [2020-10-12 18:32:51,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:51,922 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 109 transitions. [2020-10-12 18:32:51,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-12 18:32:51,922 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 109 transitions. [2020-10-12 18:32:51,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-12 18:32:51,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:51,924 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 60, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:51,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 18:32:51,924 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:51,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:51,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1421498314, now seen corresponding path program 20 times [2020-10-12 18:32:51,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:51,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [277233711] [2020-10-12 18:32:51,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:51,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:51,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:51,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:52,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:52,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:56,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:56,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-12 18:32:56,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:32:56,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-12 18:32:56,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:56,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 18:32:56,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:32:56,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 18:32:56,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:57,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:57,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:57,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:57,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:57,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:57,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:57,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:32:57,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:57,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:57,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:57,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:57,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:57,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:32:57,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:57,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:57,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:57,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 18:32:57,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:57,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 640 [2020-10-12 18:32:57,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:57,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 18:32:57,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:57,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 18:32:57,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:57,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-12 18:32:57,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:57,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:58,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:58,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:58,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 18:32:58,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:58,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 743 [2020-10-12 18:32:58,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:58,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 18:32:58,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:58,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 18:32:58,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:58,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-12 18:32:58,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:58,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:59,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:59,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:59,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 18:32:59,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:59,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 732 [2020-10-12 18:32:59,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:59,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 18:32:59,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:59,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 18:32:59,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:59,577 INFO L134 CoverageAnalysis]: Checked inductivity of 5505 backedges. 1770 proven. 3540 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2020-10-12 18:32:59,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [277233711] [2020-10-12 18:32:59,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:59,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-12 18:32:59,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484703491] [2020-10-12 18:32:59,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-12 18:32:59,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:59,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-12 18:32:59,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-12 18:32:59,580 INFO L87 Difference]: Start difference. First operand 85 states and 109 transitions. Second operand 24 states. [2020-10-12 18:33:00,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:33:00,257 INFO L93 Difference]: Finished difference Result 166 states and 218 transitions. [2020-10-12 18:33:00,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 18:33:00,257 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 212 [2020-10-12 18:33:00,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:33:00,258 INFO L225 Difference]: With dead ends: 166 [2020-10-12 18:33:00,258 INFO L226 Difference]: Without dead ends: 90 [2020-10-12 18:33:00,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980 [2020-10-12 18:33:00,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-12 18:33:00,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2020-10-12 18:33:00,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-12 18:33:00,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 113 transitions. [2020-10-12 18:33:00,265 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 113 transitions. Word has length 212 [2020-10-12 18:33:00,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:33:00,265 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 113 transitions. [2020-10-12 18:33:00,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-12 18:33:00,266 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 113 transitions. [2020-10-12 18:33:00,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-12 18:33:00,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:33:00,267 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 63, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:33:00,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 18:33:00,268 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:33:00,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:33:00,268 INFO L82 PathProgramCache]: Analyzing trace with hash -98819105, now seen corresponding path program 21 times [2020-10-12 18:33:00,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:33:00,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1631517625] [2020-10-12 18:33:00,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:33:00,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:00,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:00,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:00,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:00,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:05,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:05,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-12 18:33:05,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:33:05,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-12 18:33:05,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:05,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 18:33:05,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:33:05,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 18:33:05,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:05,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:33:05,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:05,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:05,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:05,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:33:05,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:05,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:33:05,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:05,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:33:05,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:33:05,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:33:05,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:05,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:33:05,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:05,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:06,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:06,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 18:33:06,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:06,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 758 [2020-10-12 18:33:06,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:06,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 18:33:06,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:06,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 18:33:06,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:06,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-12 18:33:06,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:06,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:06,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:07,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:07,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 18:33:07,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:07,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1113 [2020-10-12 18:33:07,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:07,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 18:33:07,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:07,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 18:33:07,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:07,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-12 18:33:07,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:07,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:07,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:08,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:08,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 18:33:08,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:08,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 857 [2020-10-12 18:33:08,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:08,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 18:33:08,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:08,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 18:33:08,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:08,545 INFO L134 CoverageAnalysis]: Checked inductivity of 6063 backedges. 1953 proven. 3906 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2020-10-12 18:33:08,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1631517625] [2020-10-12 18:33:08,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:33:08,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-12 18:33:08,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081614905] [2020-10-12 18:33:08,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-12 18:33:08,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:33:08,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-12 18:33:08,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-12 18:33:08,546 INFO L87 Difference]: Start difference. First operand 88 states and 113 transitions. Second operand 25 states. [2020-10-12 18:33:09,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:33:09,309 INFO L93 Difference]: Finished difference Result 172 states and 226 transitions. [2020-10-12 18:33:09,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 18:33:09,312 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 221 [2020-10-12 18:33:09,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:33:09,313 INFO L225 Difference]: With dead ends: 172 [2020-10-12 18:33:09,313 INFO L226 Difference]: Without dead ends: 93 [2020-10-12 18:33:09,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162 [2020-10-12 18:33:09,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-12 18:33:09,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2020-10-12 18:33:09,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-12 18:33:09,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 117 transitions. [2020-10-12 18:33:09,320 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 117 transitions. Word has length 221 [2020-10-12 18:33:09,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:33:09,320 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 117 transitions. [2020-10-12 18:33:09,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-12 18:33:09,320 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 117 transitions. [2020-10-12 18:33:09,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-12 18:33:09,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:33:09,322 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 66, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:33:09,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 18:33:09,322 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:33:09,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:33:09,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1074855338, now seen corresponding path program 22 times [2020-10-12 18:33:09,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:33:09,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1102096722] [2020-10-12 18:33:09,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:33:09,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:09,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:09,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:09,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:09,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:14,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:14,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-12 18:33:14,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:33:14,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 18:33:14,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:14,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 18:33:14,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:33:14,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 18:33:14,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:14,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:33:14,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:14,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:14,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:14,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:33:14,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:14,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:33:14,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:14,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:33:14,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:33:14,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:33:14,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:14,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:33:14,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:14,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:15,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:15,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 18:33:15,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:15,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 855 [2020-10-12 18:33:15,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:15,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 18:33:15,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:15,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 18:33:15,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:15,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-12 18:33:15,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:15,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:15,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:16,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:16,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 18:33:16,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:16,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 940 [2020-10-12 18:33:16,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:16,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 18:33:16,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:16,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 18:33:16,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:16,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-12 18:33:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:16,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:16,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:17,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:17,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 18:33:17,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:17,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 912 [2020-10-12 18:33:17,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:17,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 18:33:17,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:17,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 18:33:17,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:17,545 INFO L134 CoverageAnalysis]: Checked inductivity of 6648 backedges. 2145 proven. 4290 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2020-10-12 18:33:17,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1102096722] [2020-10-12 18:33:17,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:33:17,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-12 18:33:17,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057485905] [2020-10-12 18:33:17,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-12 18:33:17,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:33:17,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-12 18:33:17,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-12 18:33:17,548 INFO L87 Difference]: Start difference. First operand 91 states and 117 transitions. Second operand 26 states. [2020-10-12 18:33:18,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:33:18,347 INFO L93 Difference]: Finished difference Result 178 states and 234 transitions. [2020-10-12 18:33:18,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 18:33:18,347 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 230 [2020-10-12 18:33:18,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:33:18,349 INFO L225 Difference]: With dead ends: 178 [2020-10-12 18:33:18,349 INFO L226 Difference]: Without dead ends: 96 [2020-10-12 18:33:18,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=900, Invalid=1452, Unknown=0, NotChecked=0, Total=2352 [2020-10-12 18:33:18,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-12 18:33:18,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2020-10-12 18:33:18,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-12 18:33:18,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 121 transitions. [2020-10-12 18:33:18,357 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 121 transitions. Word has length 230 [2020-10-12 18:33:18,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:33:18,357 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 121 transitions. [2020-10-12 18:33:18,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-12 18:33:18,358 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 121 transitions. [2020-10-12 18:33:18,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-12 18:33:18,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:33:18,359 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 69, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:33:18,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 18:33:18,360 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:33:18,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:33:18,360 INFO L82 PathProgramCache]: Analyzing trace with hash 593527487, now seen corresponding path program 23 times [2020-10-12 18:33:18,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:33:18,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706445318] [2020-10-12 18:33:18,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:33:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:18,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:18,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:18,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:18,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:23,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:23,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-12 18:33:23,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:33:23,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-12 18:33:23,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:23,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 18:33:23,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:33:23,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 18:33:23,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:23,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:33:23,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:23,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:23,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:23,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:33:23,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:23,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:33:23,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:23,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:33:23,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:33:23,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:33:23,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:23,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:33:23,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:23,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:24,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:24,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 18:33:24,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:24,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 938 [2020-10-12 18:33:24,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:24,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 18:33:24,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:24,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 18:33:24,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:24,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 18:33:24,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:24,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:24,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:25,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:25,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 18:33:25,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:25,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-10-12 18:33:25,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:25,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 18:33:25,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:25,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 18:33:25,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:25,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-12 18:33:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:25,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:25,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:26,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:26,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 18:33:26,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:26,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1006 [2020-10-12 18:33:26,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:26,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 18:33:26,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:26,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 18:33:26,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:26,904 INFO L134 CoverageAnalysis]: Checked inductivity of 7260 backedges. 2346 proven. 4692 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-12 18:33:26,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706445318] [2020-10-12 18:33:26,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:33:26,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-12 18:33:26,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463445852] [2020-10-12 18:33:26,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-12 18:33:26,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:33:26,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-12 18:33:26,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-12 18:33:26,907 INFO L87 Difference]: Start difference. First operand 94 states and 121 transitions. Second operand 27 states. [2020-10-12 18:33:27,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:33:27,729 INFO L93 Difference]: Finished difference Result 184 states and 242 transitions. [2020-10-12 18:33:27,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-12 18:33:27,731 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 239 [2020-10-12 18:33:27,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:33:27,732 INFO L225 Difference]: With dead ends: 184 [2020-10-12 18:33:27,732 INFO L226 Difference]: Without dead ends: 99 [2020-10-12 18:33:27,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2020-10-12 18:33:27,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-12 18:33:27,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 97. [2020-10-12 18:33:27,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-12 18:33:27,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 125 transitions. [2020-10-12 18:33:27,743 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 125 transitions. Word has length 239 [2020-10-12 18:33:27,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:33:27,746 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 125 transitions. [2020-10-12 18:33:27,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-12 18:33:27,746 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 125 transitions. [2020-10-12 18:33:27,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-12 18:33:27,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:33:27,748 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 72, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:33:27,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 18:33:27,749 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:33:27,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:33:27,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1637297034, now seen corresponding path program 24 times [2020-10-12 18:33:27,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:33:27,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [363406581] [2020-10-12 18:33:27,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:33:27,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:27,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:27,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:27,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:28,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:32,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:32,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-12 18:33:32,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:33:32,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-12 18:33:32,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:32,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 18:33:32,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:33:32,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 18:33:32,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:32,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:33:32,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:32,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:32,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:32,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:33:32,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:32,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:33:32,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:32,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:33:32,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:33:32,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:33:32,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:32,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:33:32,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:32,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:33,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:33,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 18:33:33,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:33,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1041 [2020-10-12 18:33:33,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:33,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 18:33:33,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:33,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 18:33:33,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:34,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-12 18:33:34,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:34,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:34,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:35,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:35,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 18:33:35,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:35,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1084 [2020-10-12 18:33:35,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:35,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 18:33:35,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:35,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 18:33:35,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:35,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-12 18:33:35,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:35,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:35,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:36,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:36,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 18:33:36,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:36,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1139 [2020-10-12 18:33:36,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:36,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 18:33:36,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:36,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 18:33:36,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:36,642 INFO L134 CoverageAnalysis]: Checked inductivity of 7899 backedges. 2556 proven. 5112 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-10-12 18:33:36,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [363406581] [2020-10-12 18:33:36,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:33:36,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-12 18:33:36,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218343920] [2020-10-12 18:33:36,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-12 18:33:36,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:33:36,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-12 18:33:36,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-12 18:33:36,644 INFO L87 Difference]: Start difference. First operand 97 states and 125 transitions. Second operand 28 states. [2020-10-12 18:33:37,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:33:37,535 INFO L93 Difference]: Finished difference Result 190 states and 250 transitions. [2020-10-12 18:33:37,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-12 18:33:37,536 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 248 [2020-10-12 18:33:37,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:33:37,537 INFO L225 Difference]: With dead ends: 190 [2020-10-12 18:33:37,537 INFO L226 Difference]: Without dead ends: 102 [2020-10-12 18:33:37,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1053, Invalid=1703, Unknown=0, NotChecked=0, Total=2756 [2020-10-12 18:33:37,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-12 18:33:37,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2020-10-12 18:33:37,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-12 18:33:37,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 129 transitions. [2020-10-12 18:33:37,544 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 129 transitions. Word has length 248 [2020-10-12 18:33:37,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:33:37,544 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 129 transitions. [2020-10-12 18:33:37,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-12 18:33:37,544 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 129 transitions. [2020-10-12 18:33:37,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-12 18:33:37,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:33:37,546 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 75, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:33:37,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 18:33:37,546 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:33:37,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:33:37,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1779439201, now seen corresponding path program 25 times [2020-10-12 18:33:37,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:33:37,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60864020] [2020-10-12 18:33:37,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:33:37,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:37,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:37,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:37,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:37,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:42,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:42,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-12 18:33:42,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:33:42,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5095 [2020-10-12 18:33:42,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:42,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 18:33:42,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:33:42,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 18:33:42,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:42,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:33:42,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:42,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:42,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:42,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:33:42,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:42,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:33:42,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:42,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:33:42,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:33:42,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:33:42,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:42,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:33:42,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:42,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:43,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:43,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-12 18:33:43,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:43,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1192 [2020-10-12 18:33:43,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:43,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 18:33:43,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:43,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 18:33:43,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:44,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-12 18:33:44,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:44,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:44,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:45,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:45,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-12 18:33:45,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:45,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1192 [2020-10-12 18:33:45,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:45,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 18:33:45,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:45,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 18:33:45,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:45,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-12 18:33:45,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:45,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:45,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:46,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:46,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-12 18:33:46,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:46,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1259 [2020-10-12 18:33:46,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:46,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 18:33:46,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:46,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 18:33:46,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:46,892 INFO L134 CoverageAnalysis]: Checked inductivity of 8565 backedges. 2775 proven. 5550 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2020-10-12 18:33:46,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60864020] [2020-10-12 18:33:46,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:33:46,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-12 18:33:46,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786736910] [2020-10-12 18:33:46,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-12 18:33:46,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:33:46,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-12 18:33:46,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-12 18:33:46,894 INFO L87 Difference]: Start difference. First operand 100 states and 129 transitions. Second operand 29 states. [2020-10-12 18:33:47,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:33:47,796 INFO L93 Difference]: Finished difference Result 196 states and 258 transitions. [2020-10-12 18:33:47,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-12 18:33:47,796 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 257 [2020-10-12 18:33:47,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:33:47,798 INFO L225 Difference]: With dead ends: 196 [2020-10-12 18:33:47,798 INFO L226 Difference]: Without dead ends: 105 [2020-10-12 18:33:47,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1134, Invalid=1836, Unknown=0, NotChecked=0, Total=2970 [2020-10-12 18:33:47,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-12 18:33:47,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2020-10-12 18:33:47,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-12 18:33:47,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 133 transitions. [2020-10-12 18:33:47,806 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 133 transitions. Word has length 257 [2020-10-12 18:33:47,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:33:47,806 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 133 transitions. [2020-10-12 18:33:47,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-12 18:33:47,806 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 133 transitions. [2020-10-12 18:33:47,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-10-12 18:33:47,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:33:47,808 INFO L422 BasicCegarLoop]: trace histogram [78, 78, 78, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:33:47,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 18:33:47,809 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:33:47,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:33:47,809 INFO L82 PathProgramCache]: Analyzing trace with hash 445456022, now seen corresponding path program 26 times [2020-10-12 18:33:47,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:33:47,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391123087] [2020-10-12 18:33:47,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:33:47,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:47,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:47,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:47,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:47,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:52,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:52,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-12 18:33:52,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:33:52,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-12 18:33:52,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:52,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 18:33:52,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:33:52,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 18:33:52,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:52,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:33:52,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:52,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:52,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:52,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:33:52,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:52,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:33:52,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:52,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:33:52,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:33:52,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:33:52,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:52,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:33:52,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:52,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:54,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:54,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 18:33:54,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:54,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1293 [2020-10-12 18:33:54,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:54,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 18:33:54,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:54,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 18:33:54,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:54,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-12 18:33:54,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:54,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:54,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:56,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:56,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 18:33:56,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:56,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1324 [2020-10-12 18:33:56,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:56,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 18:33:56,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:56,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 18:33:56,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:56,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-12 18:33:56,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:56,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:56,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:57,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:57,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 18:33:57,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:57,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1362 [2020-10-12 18:33:57,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:57,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 18:33:57,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:57,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 18:33:57,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:57,486 INFO L134 CoverageAnalysis]: Checked inductivity of 9258 backedges. 3003 proven. 6006 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2020-10-12 18:33:57,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391123087] [2020-10-12 18:33:57,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:33:57,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-12 18:33:57,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630800230] [2020-10-12 18:33:57,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-12 18:33:57,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:33:57,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-12 18:33:57,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-12 18:33:57,488 INFO L87 Difference]: Start difference. First operand 103 states and 133 transitions. Second operand 30 states. [2020-10-12 18:33:58,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:33:58,491 INFO L93 Difference]: Finished difference Result 202 states and 266 transitions. [2020-10-12 18:33:58,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-12 18:33:58,493 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 266 [2020-10-12 18:33:58,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:33:58,495 INFO L225 Difference]: With dead ends: 202 [2020-10-12 18:33:58,495 INFO L226 Difference]: Without dead ends: 108 [2020-10-12 18:33:58,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1218, Invalid=1974, Unknown=0, NotChecked=0, Total=3192 [2020-10-12 18:33:58,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-12 18:33:58,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 106. [2020-10-12 18:33:58,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-12 18:33:58,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 137 transitions. [2020-10-12 18:33:58,502 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 137 transitions. Word has length 266 [2020-10-12 18:33:58,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:33:58,502 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 137 transitions. [2020-10-12 18:33:58,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-12 18:33:58,502 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 137 transitions. [2020-10-12 18:33:58,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-10-12 18:33:58,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:33:58,504 INFO L422 BasicCegarLoop]: trace histogram [81, 81, 81, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:33:58,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 18:33:58,505 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:33:58,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:33:58,505 INFO L82 PathProgramCache]: Analyzing trace with hash 393238655, now seen corresponding path program 27 times [2020-10-12 18:33:58,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:33:58,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535888790] [2020-10-12 18:33:58,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:33:58,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:58,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:58,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:58,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:58,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:03,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:03,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 18:34:03,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:34:03,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-12 18:34:03,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:03,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 18:34:03,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:34:03,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-12 18:34:03,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:03,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:34:03,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:03,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:03,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:03,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:34:03,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:34:03,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:34:03,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:03,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:34:03,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:34:03,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:34:03,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:03,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:34:03,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:03,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:05,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:05,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 18:34:05,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:34:05,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1406 [2020-10-12 18:34:05,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:05,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 18:34:05,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:05,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-12 18:34:05,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:05,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 18:34:05,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:05,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:05,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:07,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:07,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 18:34:07,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:34:07,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1534 [2020-10-12 18:34:07,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:07,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 18:34:07,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:07,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-12 18:34:07,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:07,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-12 18:34:07,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:07,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:07,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:08,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:08,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 18:34:08,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:34:08,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1564 [2020-10-12 18:34:08,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:08,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 18:34:08,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:08,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-12 18:34:08,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:08,759 INFO L134 CoverageAnalysis]: Checked inductivity of 9978 backedges. 3240 proven. 6480 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2020-10-12 18:34:08,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535888790] [2020-10-12 18:34:08,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:34:08,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-12 18:34:08,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087408140] [2020-10-12 18:34:08,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-12 18:34:08,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:34:08,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-12 18:34:08,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-12 18:34:08,762 INFO L87 Difference]: Start difference. First operand 106 states and 137 transitions. Second operand 31 states. [2020-10-12 18:34:09,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:34:09,825 INFO L93 Difference]: Finished difference Result 208 states and 274 transitions. [2020-10-12 18:34:09,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-12 18:34:09,826 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 275 [2020-10-12 18:34:09,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:34:09,827 INFO L225 Difference]: With dead ends: 208 [2020-10-12 18:34:09,827 INFO L226 Difference]: Without dead ends: 111 [2020-10-12 18:34:09,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422 [2020-10-12 18:34:09,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-12 18:34:09,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2020-10-12 18:34:09,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-12 18:34:09,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 141 transitions. [2020-10-12 18:34:09,835 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 141 transitions. Word has length 275 [2020-10-12 18:34:09,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:34:09,836 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 141 transitions. [2020-10-12 18:34:09,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-12 18:34:09,836 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 141 transitions. [2020-10-12 18:34:09,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-10-12 18:34:09,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:34:09,838 INFO L422 BasicCegarLoop]: trace histogram [84, 84, 84, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:34:09,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 18:34:09,838 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:34:09,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:34:09,839 INFO L82 PathProgramCache]: Analyzing trace with hash 2075517110, now seen corresponding path program 28 times [2020-10-12 18:34:09,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:34:09,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1899143782] [2020-10-12 18:34:09,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:34:09,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:09,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:09,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:09,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:10,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:14,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:14,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-12 18:34:14,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:34:14,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-12 18:34:14,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:14,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 18:34:14,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:34:14,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 18:34:14,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:14,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:34:14,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:14,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:14,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:14,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:34:14,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:34:14,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:34:14,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:14,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:34:14,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:34:14,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:34:14,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:14,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:34:14,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:14,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:16,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:16,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-12 18:34:16,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:34:16,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1595 [2020-10-12 18:34:16,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:16,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 18:34:16,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:16,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 18:34:16,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:17,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-12 18:34:17,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:17,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:17,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:18,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:18,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-12 18:34:18,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:34:18,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1736 [2020-10-12 18:34:18,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:18,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 18:34:18,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:18,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 18:34:18,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:18,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-12 18:34:18,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:18,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:18,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:20,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:20,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-12 18:34:20,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:34:20,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1760 [2020-10-12 18:34:20,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:20,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 18:34:20,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:20,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 18:34:20,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:20,722 INFO L134 CoverageAnalysis]: Checked inductivity of 10725 backedges. 3486 proven. 6972 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2020-10-12 18:34:20,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1899143782] [2020-10-12 18:34:20,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:34:20,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-12 18:34:20,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314813042] [2020-10-12 18:34:20,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-12 18:34:20,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:34:20,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-12 18:34:20,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-12 18:34:20,724 INFO L87 Difference]: Start difference. First operand 109 states and 141 transitions. Second operand 32 states. [2020-10-12 18:34:21,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:34:21,836 INFO L93 Difference]: Finished difference Result 214 states and 282 transitions. [2020-10-12 18:34:21,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-12 18:34:21,837 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 284 [2020-10-12 18:34:21,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:34:21,838 INFO L225 Difference]: With dead ends: 214 [2020-10-12 18:34:21,839 INFO L226 Difference]: Without dead ends: 114 [2020-10-12 18:34:21,841 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1395, Invalid=2265, Unknown=0, NotChecked=0, Total=3660 [2020-10-12 18:34:21,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-12 18:34:21,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 112. [2020-10-12 18:34:21,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-12 18:34:21,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 145 transitions. [2020-10-12 18:34:21,848 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 145 transitions. Word has length 284 [2020-10-12 18:34:21,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:34:21,848 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 145 transitions. [2020-10-12 18:34:21,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-12 18:34:21,848 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 145 transitions. [2020-10-12 18:34:21,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-12 18:34:21,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:34:21,851 INFO L422 BasicCegarLoop]: trace histogram [87, 87, 87, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:34:21,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 18:34:21,851 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:34:21,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:34:21,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1242025823, now seen corresponding path program 29 times [2020-10-12 18:34:21,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:34:21,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305047052] [2020-10-12 18:34:21,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:34:21,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:21,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:21,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:22,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:22,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:26,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:26,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 305 [2020-10-12 18:34:26,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:34:26,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-12 18:34:26,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:26,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 18:34:26,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-12 18:34:26,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-12 18:34:26,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:26,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:34:26,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:26,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:26,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:26,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:34:26,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:34:26,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:34:26,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:26,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:34:26,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:34:26,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:34:26,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:26,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:34:26,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:26,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:27,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:28,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:28,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-12 18:34:28,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:34:28,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1792 [2020-10-12 18:34:28,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:28,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 18:34:28,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:28,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-12 18:34:28,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:29,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-12 18:34:29,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:29,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:31,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:31,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-12 18:34:31,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:34:31,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1813 [2020-10-12 18:34:31,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:31,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 18:34:31,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:31,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-12 18:34:31,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:31,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-12 18:34:31,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:31,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:31,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:33,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:33,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-12 18:34:33,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:34:33,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1875 [2020-10-12 18:34:33,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:33,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 18:34:33,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:33,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-12 18:34:33,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:33,140 INFO L134 CoverageAnalysis]: Checked inductivity of 11499 backedges. 3741 proven. 7482 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2020-10-12 18:34:33,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [305047052] [2020-10-12 18:34:33,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:34:33,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-12 18:34:33,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652799210] [2020-10-12 18:34:33,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-12 18:34:33,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:34:33,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-12 18:34:33,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 18:34:33,143 INFO L87 Difference]: Start difference. First operand 112 states and 145 transitions. Second operand 33 states. [2020-10-12 18:34:34,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:34:34,263 INFO L93 Difference]: Finished difference Result 220 states and 290 transitions. [2020-10-12 18:34:34,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-12 18:34:34,263 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 293 [2020-10-12 18:34:34,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:34:34,265 INFO L225 Difference]: With dead ends: 220 [2020-10-12 18:34:34,265 INFO L226 Difference]: Without dead ends: 117 [2020-10-12 18:34:34,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906 [2020-10-12 18:34:34,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-12 18:34:34,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 115. [2020-10-12 18:34:34,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-12 18:34:34,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 149 transitions. [2020-10-12 18:34:34,273 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 149 transitions. Word has length 293 [2020-10-12 18:34:34,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:34:34,273 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 149 transitions. [2020-10-12 18:34:34,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-12 18:34:34,274 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 149 transitions. [2020-10-12 18:34:34,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-10-12 18:34:34,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:34:34,276 INFO L422 BasicCegarLoop]: trace histogram [90, 90, 90, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:34:34,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 18:34:34,276 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:34:34,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:34:34,276 INFO L82 PathProgramCache]: Analyzing trace with hash 482155222, now seen corresponding path program 30 times [2020-10-12 18:34:34,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:34:34,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144223462] [2020-10-12 18:34:34,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:34:34,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:34,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:34,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:34,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:34,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:39,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:39,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-12 18:34:39,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:34:39,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5220 [2020-10-12 18:34:39,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:39,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 18:34:39,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:34:39,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-12 18:34:39,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:39,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:34:39,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:39,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:39,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:39,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:34:39,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:34:39,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:34:39,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:39,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:34:39,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:34:39,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:34:39,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:39,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:34:39,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:39,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:41,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:41,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-12 18:34:41,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:34:41,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1821 [2020-10-12 18:34:41,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:41,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 18:34:41,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:41,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-12 18:34:41,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:41,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-12 18:34:41,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:42,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:42,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:43,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:43,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-12 18:34:43,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:34:43,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1958 [2020-10-12 18:34:43,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:43,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 18:34:43,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:43,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-12 18:34:43,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:43,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-12 18:34:43,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:44,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:44,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:46,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:46,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-12 18:34:46,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:34:46,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2036 [2020-10-12 18:34:46,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:46,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 18:34:46,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:46,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-12 18:34:46,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:46,115 INFO L134 CoverageAnalysis]: Checked inductivity of 12300 backedges. 4005 proven. 8010 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2020-10-12 18:34:46,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144223462] [2020-10-12 18:34:46,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:34:46,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-12 18:34:46,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799573830] [2020-10-12 18:34:46,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-12 18:34:46,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:34:46,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-12 18:34:46,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 18:34:46,117 INFO L87 Difference]: Start difference. First operand 115 states and 149 transitions. Second operand 34 states. [2020-10-12 18:34:47,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:34:47,293 INFO L93 Difference]: Finished difference Result 226 states and 298 transitions. [2020-10-12 18:34:47,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-12 18:34:47,294 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 302 [2020-10-12 18:34:47,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:34:47,295 INFO L225 Difference]: With dead ends: 226 [2020-10-12 18:34:47,296 INFO L226 Difference]: Without dead ends: 120 [2020-10-12 18:34:47,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1584, Invalid=2576, Unknown=0, NotChecked=0, Total=4160 [2020-10-12 18:34:47,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-12 18:34:47,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2020-10-12 18:34:47,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-12 18:34:47,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 153 transitions. [2020-10-12 18:34:47,304 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 153 transitions. Word has length 302 [2020-10-12 18:34:47,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:34:47,305 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 153 transitions. [2020-10-12 18:34:47,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-12 18:34:47,305 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 153 transitions. [2020-10-12 18:34:47,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-12 18:34:47,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:34:47,307 INFO L422 BasicCegarLoop]: trace histogram [93, 93, 93, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:34:47,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 18:34:47,308 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:34:47,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:34:47,308 INFO L82 PathProgramCache]: Analyzing trace with hash 207375935, now seen corresponding path program 31 times [2020-10-12 18:34:47,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:34:47,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216574743] [2020-10-12 18:34:47,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:34:47,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:47,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:47,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:47,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:47,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking...