/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/gcd01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 23:45:28,549 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 23:45:28,552 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 23:45:28,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 23:45:28,579 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 23:45:28,581 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 23:45:28,582 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 23:45:28,584 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 23:45:28,585 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 23:45:28,587 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 23:45:28,588 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 23:45:28,589 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 23:45:28,589 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 23:45:28,591 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 23:45:28,592 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 23:45:28,593 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 23:45:28,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 23:45:28,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 23:45:28,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 23:45:28,599 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 23:45:28,600 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 23:45:28,601 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 23:45:28,602 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 23:45:28,603 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 23:45:28,606 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 23:45:28,606 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 23:45:28,607 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 23:45:28,608 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 23:45:28,608 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 23:45:28,609 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 23:45:28,610 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 23:45:28,611 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 23:45:28,611 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 23:45:28,612 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 23:45:28,614 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 23:45:28,614 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 23:45:28,615 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 23:45:28,615 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 23:45:28,615 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 23:45:28,616 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 23:45:28,617 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 23:45:28,618 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 23:45:28,645 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 23:45:28,645 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 23:45:28,646 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 23:45:28,646 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 23:45:28,647 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 23:45:28,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 23:45:28,647 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 23:45:28,647 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 23:45:28,648 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 23:45:28,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 23:45:28,648 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 23:45:28,648 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 23:45:28,648 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 23:45:28,648 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 23:45:28,649 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 23:45:28,649 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 23:45:28,649 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 23:45:28,649 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 23:45:28,649 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 23:45:28,650 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 23:45:28,650 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 23:45:28,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:45:28,650 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 23:45:28,651 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 23:45:28,651 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 23:45:28,651 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 23:45:28,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 23:45:28,651 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 23:45:28,652 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 23:45:28,652 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; [2020-09-24 23:45:29,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 23:45:29,141 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 23:45:29,145 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 23:45:29,147 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 23:45:29,149 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 23:45:29,150 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/gcd01-1.c [2020-09-24 23:45:29,239 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/33e4e6055/8e17a53df32d4c8c8638cd3df25bc1c1/FLAGf1634ce96 [2020-09-24 23:45:29,758 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 23:45:29,758 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/gcd01-1.c [2020-09-24 23:45:29,765 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/33e4e6055/8e17a53df32d4c8c8638cd3df25bc1c1/FLAGf1634ce96 [2020-09-24 23:45:30,098 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/33e4e6055/8e17a53df32d4c8c8638cd3df25bc1c1 [2020-09-24 23:45:30,112 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 23:45:30,119 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 23:45:30,120 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 23:45:30,120 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 23:45:30,124 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 23:45:30,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:45:30" (1/1) ... [2020-09-24 23:45:30,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12391971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:45:30, skipping insertion in model container [2020-09-24 23:45:30,130 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:45:30" (1/1) ... [2020-09-24 23:45:30,139 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 23:45:30,163 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 23:45:30,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:45:30,412 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 23:45:30,433 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:45:30,449 INFO L208 MainTranslator]: Completed translation [2020-09-24 23:45:30,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:45:30 WrapperNode [2020-09-24 23:45:30,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 23:45:30,450 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 23:45:30,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 23:45:30,450 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 23:45:30,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:45:30" (1/1) ... [2020-09-24 23:45:30,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:45:30" (1/1) ... [2020-09-24 23:45:30,469 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:45:30" (1/1) ... [2020-09-24 23:45:30,469 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:45:30" (1/1) ... [2020-09-24 23:45:30,473 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:45:30" (1/1) ... [2020-09-24 23:45:30,476 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:45:30" (1/1) ... [2020-09-24 23:45:30,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:45:30" (1/1) ... [2020-09-24 23:45:30,479 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 23:45:30,479 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 23:45:30,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 23:45:30,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 23:45:30,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:45:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:45:30,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 23:45:30,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 23:45:30,640 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2020-09-24 23:45:30,640 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 23:45:30,641 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 23:45:30,641 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 23:45:30,641 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2020-09-24 23:45:30,641 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 23:45:30,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 23:45:30,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 23:45:30,912 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 23:45:30,913 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 23:45:30,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:45:30 BoogieIcfgContainer [2020-09-24 23:45:30,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 23:45:30,929 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 23:45:30,929 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 23:45:30,933 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 23:45:30,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:45:30" (1/3) ... [2020-09-24 23:45:30,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59367ccf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:45:30, skipping insertion in model container [2020-09-24 23:45:30,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:45:30" (2/3) ... [2020-09-24 23:45:30,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59367ccf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:45:30, skipping insertion in model container [2020-09-24 23:45:30,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:45:30" (3/3) ... [2020-09-24 23:45:30,940 INFO L109 eAbstractionObserver]: Analyzing ICFG gcd01-1.c [2020-09-24 23:45:30,953 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 23:45:30,963 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 23:45:30,985 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 23:45:31,014 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 23:45:31,014 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 23:45:31,014 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 23:45:31,015 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 23:45:31,015 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 23:45:31,015 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 23:45:31,015 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 23:45:31,015 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 23:45:31,035 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-09-24 23:45:31,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-24 23:45:31,043 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:45:31,044 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:45:31,045 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:45:31,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:45:31,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1470222128, now seen corresponding path program 1 times [2020-09-24 23:45:31,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:45:31,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1751451544] [2020-09-24 23:45:31,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:45:31,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:31,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:31,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:31,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:31,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 23:45:31,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:31,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-09-24 23:45:31,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:31,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:45:31,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 23:45:31,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 23:45:31,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 23:45:31,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:45:31,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:31,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:31,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:31,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:45:31,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:31,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:45:31,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:31,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:45:31,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:31,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:45:31,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:31,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 23:45:31,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:31,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:31,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:31,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:45:31,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:31,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 23:45:31,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:31,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:45:31,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:45:31,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:45:31,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:31,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:45:31,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1751451544] [2020-09-24 23:45:31,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:45:31,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 23:45:31,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722372272] [2020-09-24 23:45:31,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 23:45:31,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:45:31,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 23:45:31,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 23:45:31,855 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 7 states. [2020-09-24 23:45:32,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:45:32,005 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2020-09-24 23:45:32,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 23:45:32,007 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-09-24 23:45:32,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:45:32,021 INFO L225 Difference]: With dead ends: 60 [2020-09-24 23:45:32,021 INFO L226 Difference]: Without dead ends: 38 [2020-09-24 23:45:32,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-24 23:45:32,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-24 23:45:32,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-24 23:45:32,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-24 23:45:32,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-09-24 23:45:32,081 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 24 [2020-09-24 23:45:32,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:45:32,082 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-09-24 23:45:32,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 23:45:32,082 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-09-24 23:45:32,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-24 23:45:32,084 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:45:32,085 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:45:32,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 23:45:32,085 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:45:32,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:45:32,086 INFO L82 PathProgramCache]: Analyzing trace with hash 831268307, now seen corresponding path program 1 times [2020-09-24 23:45:32,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:45:32,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2125319067] [2020-09-24 23:45:32,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:45:32,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:32,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:32,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:32,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:32,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:32,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 23:45:32,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:45:32,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 409 [2020-09-24 23:45:32,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:32,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:45:32,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 23:45:32,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 23:45:32,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 23:45:32,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:45:32,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:32,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:32,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:32,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:45:32,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:32,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:45:32,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:32,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:45:32,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:32,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:45:32,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:32,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 23:45:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:32,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:32,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:32,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:45:32,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:32,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 23:45:32,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:32,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:45:32,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:32,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 23:45:32,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:32,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:45:32,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2125319067] [2020-09-24 23:45:32,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:45:32,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 23:45:32,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076413655] [2020-09-24 23:45:32,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 23:45:32,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:45:32,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 23:45:32,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 23:45:32,639 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 6 states. [2020-09-24 23:45:32,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:45:32,822 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2020-09-24 23:45:32,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 23:45:32,823 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-09-24 23:45:32,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:45:32,827 INFO L225 Difference]: With dead ends: 46 [2020-09-24 23:45:32,827 INFO L226 Difference]: Without dead ends: 40 [2020-09-24 23:45:32,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 23:45:32,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-24 23:45:32,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-09-24 23:45:32,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-24 23:45:32,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-09-24 23:45:32,855 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 25 [2020-09-24 23:45:32,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:45:32,856 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-09-24 23:45:32,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 23:45:32,856 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-09-24 23:45:32,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 23:45:32,862 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:45:32,862 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:45:32,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 23:45:32,863 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:45:32,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:45:32,864 INFO L82 PathProgramCache]: Analyzing trace with hash -852904039, now seen corresponding path program 1 times [2020-09-24 23:45:32,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:45:32,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033441448] [2020-09-24 23:45:32,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:45:32,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:32,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:32,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:33,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:33,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:33,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 23:45:33,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:45:33,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 570 [2020-09-24 23:45:33,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:33,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 23:45:33,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 23:45:33,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 23:45:33,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:33,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:45:33,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:33,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:33,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:33,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:45:33,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:33,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:45:33,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:33,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:45:33,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:33,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:45:33,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:33,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 23:45:33,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:33,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:33,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:33,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:33,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 23:45:33,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:33,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-09-24 23:45:33,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:33,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 23:45:33,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:45:33,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 23:45:33,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:33,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:45:33,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:33,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:33,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:33,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:45:33,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:33,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 23:45:33,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:33,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:45:33,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:33,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:45:33,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:33,860 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 23:45:33,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033441448] [2020-09-24 23:45:33,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:45:33,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 23:45:33,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610114774] [2020-09-24 23:45:33,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 23:45:33,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:45:33,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 23:45:33,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-24 23:45:33,864 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 9 states. [2020-09-24 23:45:34,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:45:34,074 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2020-09-24 23:45:34,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 23:45:34,075 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-09-24 23:45:34,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:45:34,077 INFO L225 Difference]: With dead ends: 56 [2020-09-24 23:45:34,077 INFO L226 Difference]: Without dead ends: 50 [2020-09-24 23:45:34,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-09-24 23:45:34,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-24 23:45:34,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 43. [2020-09-24 23:45:34,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-24 23:45:34,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2020-09-24 23:45:34,089 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 35 [2020-09-24 23:45:34,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:45:34,089 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2020-09-24 23:45:34,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 23:45:34,090 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2020-09-24 23:45:34,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 23:45:34,091 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:45:34,092 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:45:34,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 23:45:34,092 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:45:34,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:45:34,093 INFO L82 PathProgramCache]: Analyzing trace with hash 2030561919, now seen corresponding path program 1 times [2020-09-24 23:45:34,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:45:34,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [681092613] [2020-09-24 23:45:34,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:45:34,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:34,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:34,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:34,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:34,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:34,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 23:45:34,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:45:34,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-09-24 23:45:34,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:34,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:45:34,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 23:45:34,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 23:45:34,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:34,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:45:34,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:34,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:34,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:34,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:45:34,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:34,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:45:34,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:34,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:45:34,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:34,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:45:34,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:34,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 23:45:34,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:34,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:34,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:34,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:34,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 23:45:34,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:34,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-24 23:45:34,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:34,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:45:34,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 23:45:34,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 23:45:34,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:34,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:45:34,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:34,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:34,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:34,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:45:34,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:34,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 23:45:34,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:34,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:45:34,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:34,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:45:34,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:34,631 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 23:45:34,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [681092613] [2020-09-24 23:45:34,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:45:34,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 23:45:34,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697909936] [2020-09-24 23:45:34,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 23:45:34,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:45:34,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 23:45:34,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-24 23:45:34,633 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 9 states. [2020-09-24 23:45:34,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:45:34,770 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2020-09-24 23:45:34,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 23:45:34,770 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-09-24 23:45:34,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:45:34,772 INFO L225 Difference]: With dead ends: 58 [2020-09-24 23:45:34,772 INFO L226 Difference]: Without dead ends: 52 [2020-09-24 23:45:34,773 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-24 23:45:34,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-24 23:45:34,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-24 23:45:34,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-24 23:45:34,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2020-09-24 23:45:34,784 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 35 [2020-09-24 23:45:34,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:45:34,784 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2020-09-24 23:45:34,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 23:45:34,784 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2020-09-24 23:45:34,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-24 23:45:34,786 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:45:34,786 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:45:34,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 23:45:34,787 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:45:34,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:45:34,787 INFO L82 PathProgramCache]: Analyzing trace with hash -2122258312, now seen corresponding path program 1 times [2020-09-24 23:45:34,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:45:34,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418196313] [2020-09-24 23:45:34,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:45:34,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:34,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:34,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:34,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:34,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:35,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:35,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:35,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 23:45:35,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 23:45:35,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 730 [2020-09-24 23:45:35,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:35,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 23:45:35,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 23:45:35,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 23:45:35,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:35,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:45:35,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:35,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:35,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:35,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:45:35,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:35,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:45:35,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:35,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:45:35,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:35,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:45:35,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:35,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 23:45:35,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:35,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:35,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:35,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 23:45:35,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:35,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-24 23:45:35,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:35,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 23:45:35,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:35,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 23:45:35,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:35,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:45:35,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:35,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:35,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:35,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:45:35,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:35,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 23:45:35,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:35,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:45:35,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:35,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 23:45:35,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:35,738 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 23:45:35,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418196313] [2020-09-24 23:45:35,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:45:35,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 23:45:35,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356615404] [2020-09-24 23:45:35,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 23:45:35,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:45:35,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 23:45:35,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-24 23:45:35,742 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 9 states. [2020-09-24 23:45:35,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:45:35,959 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2020-09-24 23:45:35,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 23:45:35,960 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2020-09-24 23:45:35,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:45:35,961 INFO L225 Difference]: With dead ends: 61 [2020-09-24 23:45:35,962 INFO L226 Difference]: Without dead ends: 55 [2020-09-24 23:45:35,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-09-24 23:45:35,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-24 23:45:35,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48. [2020-09-24 23:45:35,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-24 23:45:35,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2020-09-24 23:45:35,971 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 36 [2020-09-24 23:45:35,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:45:35,971 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2020-09-24 23:45:35,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 23:45:35,972 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2020-09-24 23:45:35,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-24 23:45:35,974 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:45:35,974 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:45:35,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 23:45:35,974 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:45:35,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:45:35,975 INFO L82 PathProgramCache]: Analyzing trace with hash 404002040, now seen corresponding path program 1 times [2020-09-24 23:45:35,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:45:35,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616335609] [2020-09-24 23:45:35,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:45:35,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:35,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:36,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:36,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:36,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:36,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:37,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:37,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 23:45:37,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 23:45:37,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1556 [2020-09-24 23:45:37,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:37,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 23:45:37,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 23:45:37,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 23:45:37,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:37,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:45:37,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:37,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:37,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:37,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:45:37,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:37,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:45:37,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:37,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:45:37,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:37,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:45:37,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:37,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 23:45:37,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:37,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:37,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:37,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:37,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:37,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:37,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 23:45:37,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 23:45:37,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-09-24 23:45:37,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:37,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 23:45:37,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:37,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 23:45:37,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:37,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:45:37,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:37,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:37,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:37,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:45:37,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:37,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-24 23:45:37,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:37,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:45:37,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:37,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 23:45:37,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:37,989 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 23:45:37,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616335609] [2020-09-24 23:45:37,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:45:37,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 23:45:37,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258150282] [2020-09-24 23:45:37,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 23:45:37,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:45:37,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 23:45:38,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-24 23:45:38,000 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 10 states. [2020-09-24 23:45:38,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:45:38,315 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2020-09-24 23:45:38,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 23:45:38,316 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-09-24 23:45:38,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:45:38,317 INFO L225 Difference]: With dead ends: 61 [2020-09-24 23:45:38,317 INFO L226 Difference]: Without dead ends: 55 [2020-09-24 23:45:38,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-09-24 23:45:38,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-24 23:45:38,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-24 23:45:38,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-24 23:45:38,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2020-09-24 23:45:38,338 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 36 [2020-09-24 23:45:38,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:45:38,339 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2020-09-24 23:45:38,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 23:45:38,339 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2020-09-24 23:45:38,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 23:45:38,345 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:45:38,348 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:45:38,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 23:45:38,348 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:45:38,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:45:38,349 INFO L82 PathProgramCache]: Analyzing trace with hash 594320754, now seen corresponding path program 1 times [2020-09-24 23:45:38,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:45:38,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1319288202] [2020-09-24 23:45:38,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:45:38,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:38,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:38,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:38,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:38,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 23:45:38,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:38,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-09-24 23:45:38,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:38,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 23:45:38,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 23:45:38,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 23:45:38,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:38,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:45:38,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:38,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:38,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:38,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:45:38,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:38,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:45:38,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:38,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:45:38,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:38,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:45:38,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:38,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 23:45:38,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:38,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:38,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:39,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:39,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 23:45:39,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:39,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-09-24 23:45:39,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:39,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 23:45:39,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 23:45:39,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 23:45:39,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:39,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:45:39,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:39,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:39,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:39,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:39,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 23:45:39,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:39,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-09-24 23:45:39,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:39,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 23:45:39,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:45:39,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 23:45:39,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:39,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:45:39,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:39,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:39,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:39,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:45:39,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:39,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 23:45:39,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:39,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:45:39,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:39,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:45:39,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:39,303 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 23:45:39,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1319288202] [2020-09-24 23:45:39,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:45:39,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 23:45:39,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17520279] [2020-09-24 23:45:39,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 23:45:39,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:45:39,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 23:45:39,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-24 23:45:39,307 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand 10 states. [2020-09-24 23:45:39,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:45:39,567 INFO L93 Difference]: Finished difference Result 76 states and 89 transitions. [2020-09-24 23:45:39,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 23:45:39,568 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 46 [2020-09-24 23:45:39,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:45:39,569 INFO L225 Difference]: With dead ends: 76 [2020-09-24 23:45:39,569 INFO L226 Difference]: Without dead ends: 49 [2020-09-24 23:45:39,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-09-24 23:45:39,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-24 23:45:39,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2020-09-24 23:45:39,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-24 23:45:39,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2020-09-24 23:45:39,583 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 46 [2020-09-24 23:45:39,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:45:39,583 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2020-09-24 23:45:39,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 23:45:39,584 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2020-09-24 23:45:39,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-24 23:45:39,587 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:45:39,587 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:45:39,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 23:45:39,587 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:45:39,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:45:39,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1010225367, now seen corresponding path program 1 times [2020-09-24 23:45:39,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:45:39,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990006371] [2020-09-24 23:45:39,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:45:39,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:39,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:39,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:39,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:39,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:39,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:39,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:39,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:40,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:44,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:44,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 23:45:44,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 23:45:44,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4538 [2020-09-24 23:45:44,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:44,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 23:45:44,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 23:45:44,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 23:45:44,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:44,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:45:44,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:44,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:44,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:44,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:45:44,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:44,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:45:44,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:44,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:45:44,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:44,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:45:44,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:44,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 23:45:44,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:44,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:44,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:44,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 23:45:44,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:44,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-09-24 23:45:44,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:44,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 23:45:44,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:44,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 23:45:44,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:44,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:45:44,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:44,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:44,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:44,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 23:45:44,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:44,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-09-24 23:45:44,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:44,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 23:45:44,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:44,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 23:45:44,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:44,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:45:44,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:44,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:44,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:44,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:45:44,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:44,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-24 23:45:44,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:44,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:45:44,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:44,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 23:45:44,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:44,757 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 23:45:44,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990006371] [2020-09-24 23:45:44,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:45:44,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 23:45:44,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582956766] [2020-09-24 23:45:44,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 23:45:44,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:45:44,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 23:45:44,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-09-24 23:45:44,762 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand 14 states. [2020-09-24 23:45:45,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:45:45,105 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions. [2020-09-24 23:45:45,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 23:45:45,106 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 47 [2020-09-24 23:45:45,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:45:45,107 INFO L225 Difference]: With dead ends: 63 [2020-09-24 23:45:45,107 INFO L226 Difference]: Without dead ends: 57 [2020-09-24 23:45:45,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2020-09-24 23:45:45,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-24 23:45:45,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2020-09-24 23:45:45,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-24 23:45:45,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2020-09-24 23:45:45,125 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 47 [2020-09-24 23:45:45,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:45:45,125 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2020-09-24 23:45:45,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 23:45:45,125 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2020-09-24 23:45:45,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-24 23:45:45,126 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:45:45,127 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:45:45,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 23:45:45,127 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:45:45,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:45:45,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1466875377, now seen corresponding path program 2 times [2020-09-24 23:45:45,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:45:45,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [644985481] [2020-09-24 23:45:45,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:45:45,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:45,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:45,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:45,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:45,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:45,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:45,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:45,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:45,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:48,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:48,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 23:45:48,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 23:45:48,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3167 [2020-09-24 23:45:48,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:48,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 23:45:48,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 23:45:48,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 23:45:48,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:48,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:45:48,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:48,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:48,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:48,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:45:48,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:48,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:45:48,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:48,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:45:48,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:48,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:45:48,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:48,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 23:45:48,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:48,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:48,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:48,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 23:45:48,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:48,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-09-24 23:45:48,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:48,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 23:45:48,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:48,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 23:45:48,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:48,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:45:48,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:48,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:48,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:48,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 23:45:48,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:48,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-24 23:45:48,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:48,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 23:45:48,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:48,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 23:45:48,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:48,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:45:48,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:48,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:48,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:48,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:45:48,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:48,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 23:45:48,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:48,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:45:48,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:48,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 23:45:48,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:48,830 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-24 23:45:48,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [644985481] [2020-09-24 23:45:48,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:45:48,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 23:45:48,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9257784] [2020-09-24 23:45:48,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 23:45:48,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:45:48,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 23:45:48,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-09-24 23:45:48,833 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 12 states. [2020-09-24 23:45:49,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:45:49,073 INFO L93 Difference]: Finished difference Result 68 states and 77 transitions. [2020-09-24 23:45:49,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 23:45:49,074 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 47 [2020-09-24 23:45:49,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:45:49,075 INFO L225 Difference]: With dead ends: 68 [2020-09-24 23:45:49,075 INFO L226 Difference]: Without dead ends: 62 [2020-09-24 23:45:49,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-24 23:45:49,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-24 23:45:49,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 55. [2020-09-24 23:45:49,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-24 23:45:49,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2020-09-24 23:45:49,091 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 47 [2020-09-24 23:45:49,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:45:49,091 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2020-09-24 23:45:49,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 23:45:49,092 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2020-09-24 23:45:49,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-24 23:45:49,093 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:45:49,093 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:45:49,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 23:45:49,094 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:45:49,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:45:49,094 INFO L82 PathProgramCache]: Analyzing trace with hash 628814935, now seen corresponding path program 2 times [2020-09-24 23:45:49,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:45:49,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66763019] [2020-09-24 23:45:49,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:45:49,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:49,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:49,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:49,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:49,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:49,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:49,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:49,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:51,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:51,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 23:45:51,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 23:45:51,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2698 [2020-09-24 23:45:51,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:51,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 23:45:51,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 23:45:51,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 23:45:51,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:51,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:45:51,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:51,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:51,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:51,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:45:51,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:51,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:45:51,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:51,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:45:51,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:51,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:45:51,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:51,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 23:45:51,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:51,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:52,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:52,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 23:45:52,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:52,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-24 23:45:52,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:52,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 23:45:52,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:52,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 23:45:52,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:52,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:45:52,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:52,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:52,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:52,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 23:45:52,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:52,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-24 23:45:52,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:52,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 23:45:52,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:52,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 23:45:52,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:52,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:45:52,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:52,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:52,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:52,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:45:52,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:52,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 23:45:52,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:52,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:45:52,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:52,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 23:45:52,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:52,213 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-24 23:45:52,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66763019] [2020-09-24 23:45:52,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:45:52,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 23:45:52,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729583706] [2020-09-24 23:45:52,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 23:45:52,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:45:52,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 23:45:52,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-24 23:45:52,216 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand 10 states. [2020-09-24 23:45:52,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:45:52,402 INFO L93 Difference]: Finished difference Result 68 states and 77 transitions. [2020-09-24 23:45:52,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 23:45:52,402 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 47 [2020-09-24 23:45:52,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:45:52,404 INFO L225 Difference]: With dead ends: 68 [2020-09-24 23:45:52,404 INFO L226 Difference]: Without dead ends: 62 [2020-09-24 23:45:52,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-09-24 23:45:52,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-24 23:45:52,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-09-24 23:45:52,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-24 23:45:52,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 71 transitions. [2020-09-24 23:45:52,421 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 71 transitions. Word has length 47 [2020-09-24 23:45:52,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:45:52,421 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 71 transitions. [2020-09-24 23:45:52,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 23:45:52,421 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 71 transitions. [2020-09-24 23:45:52,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 23:45:52,425 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:45:52,425 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:45:52,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 23:45:52,427 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:45:52,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:45:52,427 INFO L82 PathProgramCache]: Analyzing trace with hash -925145612, now seen corresponding path program 3 times [2020-09-24 23:45:52,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:45:52,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [528351756] [2020-09-24 23:45:52,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:45:52,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:52,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:52,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:52,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:52,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:52,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:52,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:52,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:53,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:53,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:53,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:53,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:57,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:57,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-24 23:45:57,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 23:45:57,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 23:45:57,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:57,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 23:45:57,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 23:45:57,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 23:45:57,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:57,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:45:57,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:57,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:57,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:57,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:45:57,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:57,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:45:57,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:57,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:45:57,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:57,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:45:57,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:57,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 23:45:57,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:57,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:57,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:57,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 23:45:57,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:57,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-09-24 23:45:57,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:57,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 23:45:57,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:57,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-24 23:45:57,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:57,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:45:57,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:57,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:58,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:58,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 23:45:58,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:58,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-24 23:45:58,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:58,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 23:45:58,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:58,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 23:45:58,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:58,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:45:58,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:58,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:58,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:58,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 23:45:58,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:58,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-24 23:45:58,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:58,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 23:45:58,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:58,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 23:45:58,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:58,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:45:58,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:58,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:58,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:58,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:45:58,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:58,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 23:45:58,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:58,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:45:58,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:58,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 23:45:58,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:58,374 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-24 23:45:58,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [528351756] [2020-09-24 23:45:58,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:45:58,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 23:45:58,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233754414] [2020-09-24 23:45:58,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 23:45:58,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:45:58,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 23:45:58,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-09-24 23:45:58,377 INFO L87 Difference]: Start difference. First operand 62 states and 71 transitions. Second operand 16 states. [2020-09-24 23:45:59,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:45:59,065 INFO L93 Difference]: Finished difference Result 80 states and 93 transitions. [2020-09-24 23:45:59,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 23:45:59,066 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 58 [2020-09-24 23:45:59,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:45:59,067 INFO L225 Difference]: With dead ends: 80 [2020-09-24 23:45:59,067 INFO L226 Difference]: Without dead ends: 74 [2020-09-24 23:45:59,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=185, Invalid=745, Unknown=0, NotChecked=0, Total=930 [2020-09-24 23:45:59,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-24 23:45:59,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 67. [2020-09-24 23:45:59,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-24 23:45:59,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 77 transitions. [2020-09-24 23:45:59,082 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 77 transitions. Word has length 58 [2020-09-24 23:45:59,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:45:59,087 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 77 transitions. [2020-09-24 23:45:59,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 23:45:59,087 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 77 transitions. [2020-09-24 23:45:59,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 23:45:59,088 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:45:59,088 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:45:59,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 23:45:59,090 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:45:59,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:45:59,090 INFO L82 PathProgramCache]: Analyzing trace with hash -609776486, now seen corresponding path program 4 times [2020-09-24 23:45:59,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:45:59,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270232089] [2020-09-24 23:45:59,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:45:59,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:59,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:59,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:59,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:59,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:59,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:59,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:59,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:59,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:59,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:59,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:59,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:00,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:00,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:04,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:04,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-24 23:46:04,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-24 23:46:04,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 23:46:04,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:04,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 23:46:04,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 23:46:04,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 23:46:04,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:04,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:46:04,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:04,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:04,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:04,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:46:04,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:04,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:46:04,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:04,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:46:04,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:04,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:46:04,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:04,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 23:46:04,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:04,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:04,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:04,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 23:46:04,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:04,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-09-24 23:46:04,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:04,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 23:46:04,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:04,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-24 23:46:04,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:04,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:46:04,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:04,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:04,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:04,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 23:46:04,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:04,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-09-24 23:46:04,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:04,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 23:46:04,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:04,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 23:46:04,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:04,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:46:04,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:04,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:04,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:04,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 23:46:04,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:04,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-24 23:46:04,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:04,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 23:46:04,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:04,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 23:46:04,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:04,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:46:04,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:04,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:04,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:04,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:46:04,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:04,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 23:46:04,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:04,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:46:04,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:04,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 23:46:04,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:04,951 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-24 23:46:04,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [270232089] [2020-09-24 23:46:04,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:46:04,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 23:46:04,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579370548] [2020-09-24 23:46:04,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 23:46:04,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:46:04,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 23:46:04,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-09-24 23:46:04,954 INFO L87 Difference]: Start difference. First operand 67 states and 77 transitions. Second operand 14 states. [2020-09-24 23:46:05,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:46:05,349 INFO L93 Difference]: Finished difference Result 83 states and 95 transitions. [2020-09-24 23:46:05,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 23:46:05,350 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 58 [2020-09-24 23:46:05,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:46:05,351 INFO L225 Difference]: With dead ends: 83 [2020-09-24 23:46:05,351 INFO L226 Difference]: Without dead ends: 77 [2020-09-24 23:46:05,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=497, Unknown=0, NotChecked=0, Total=600 [2020-09-24 23:46:05,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-09-24 23:46:05,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 70. [2020-09-24 23:46:05,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-24 23:46:05,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 80 transitions. [2020-09-24 23:46:05,358 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 80 transitions. Word has length 58 [2020-09-24 23:46:05,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:46:05,359 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 80 transitions. [2020-09-24 23:46:05,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 23:46:05,359 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 80 transitions. [2020-09-24 23:46:05,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 23:46:05,360 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:46:05,360 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:46:05,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 23:46:05,360 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:46:05,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:46:05,361 INFO L82 PathProgramCache]: Analyzing trace with hash 304923956, now seen corresponding path program 5 times [2020-09-24 23:46:05,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:46:05,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [264278933] [2020-09-24 23:46:05,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:46:05,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:05,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:05,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:05,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:05,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:05,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:05,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:05,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:05,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:05,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:06,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:06,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:06,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:06,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:10,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:10,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-24 23:46:10,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-24 23:46:10,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 23:46:10,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:10,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 23:46:10,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 23:46:10,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 23:46:10,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:10,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:46:10,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:10,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:10,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:10,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:46:10,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:10,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:46:10,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:10,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:46:10,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:10,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:46:10,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:10,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 23:46:10,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:10,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:10,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:10,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 23:46:10,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:10,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-09-24 23:46:10,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:10,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 23:46:10,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:10,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-24 23:46:10,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:10,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:46:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:10,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:10,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:10,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 23:46:10,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:10,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-24 23:46:10,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:10,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 23:46:10,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:10,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 23:46:10,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:10,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:46:10,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:10,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:11,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:11,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 23:46:11,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:11,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-24 23:46:11,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:11,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 23:46:11,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:11,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 23:46:11,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:11,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:46:11,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:11,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:11,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:11,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:46:11,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:11,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 23:46:11,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:11,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:46:11,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:11,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 23:46:11,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:11,215 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 15 proven. 19 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 23:46:11,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [264278933] [2020-09-24 23:46:11,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:46:11,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 23:46:11,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698208845] [2020-09-24 23:46:11,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 23:46:11,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:46:11,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 23:46:11,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2020-09-24 23:46:11,217 INFO L87 Difference]: Start difference. First operand 70 states and 80 transitions. Second operand 17 states. [2020-09-24 23:46:11,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:46:11,794 INFO L93 Difference]: Finished difference Result 81 states and 92 transitions. [2020-09-24 23:46:11,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 23:46:11,795 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 58 [2020-09-24 23:46:11,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:46:11,796 INFO L225 Difference]: With dead ends: 81 [2020-09-24 23:46:11,796 INFO L226 Difference]: Without dead ends: 75 [2020-09-24 23:46:11,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=143, Invalid=669, Unknown=0, NotChecked=0, Total=812 [2020-09-24 23:46:11,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-24 23:46:11,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2020-09-24 23:46:11,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-24 23:46:11,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 83 transitions. [2020-09-24 23:46:11,802 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 83 transitions. Word has length 58 [2020-09-24 23:46:11,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:46:11,803 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 83 transitions. [2020-09-24 23:46:11,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 23:46:11,803 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 83 transitions. [2020-09-24 23:46:11,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 23:46:11,804 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:46:11,804 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:46:11,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 23:46:11,805 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:46:11,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:46:11,805 INFO L82 PathProgramCache]: Analyzing trace with hash -411905612, now seen corresponding path program 6 times [2020-09-24 23:46:11,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:46:11,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244384203] [2020-09-24 23:46:11,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:46:11,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:11,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:11,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:11,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:12,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:12,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:12,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:12,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:12,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:12,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:12,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:12,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:16,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:16,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-24 23:46:16,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 23:46:16,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 23:46:16,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:16,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 23:46:16,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 23:46:16,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 23:46:16,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:16,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:46:16,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:16,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:16,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:16,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:46:16,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:16,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:46:16,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:16,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:46:16,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:16,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:46:16,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:16,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 23:46:16,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:16,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:16,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:16,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:16,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:16,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:17,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:17,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:17,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:17,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:19,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:19,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:19,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 23:46:19,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 23:46:19,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3017 [2020-09-24 23:46:19,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:19,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 23:46:19,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:19,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-24 23:46:19,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:19,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:46:19,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:19,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:19,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:19,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:19,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:19,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:20,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:20,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 23:46:20,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 23:46:20,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 495 [2020-09-24 23:46:20,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:20,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 23:46:20,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:20,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 23:46:20,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:20,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:46:20,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:20,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:20,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:20,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:20,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:20,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:20,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 23:46:20,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 23:46:20,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-24 23:46:20,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:20,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 23:46:20,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:20,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 23:46:20,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:20,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:46:20,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:20,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:20,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:20,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:20,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:46:20,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:46:20,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 23:46:20,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:20,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:46:20,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:20,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 23:46:20,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:20,662 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-24 23:46:20,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244384203] [2020-09-24 23:46:20,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:46:20,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 23:46:20,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587201331] [2020-09-24 23:46:20,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 23:46:20,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:46:20,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 23:46:20,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-24 23:46:20,665 INFO L87 Difference]: Start difference. First operand 73 states and 83 transitions. Second operand 11 states. [2020-09-24 23:46:20,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:46:20,945 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2020-09-24 23:46:20,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 23:46:20,946 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 58 [2020-09-24 23:46:20,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:46:20,946 INFO L225 Difference]: With dead ends: 73 [2020-09-24 23:46:20,947 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 23:46:20,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2020-09-24 23:46:20,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 23:46:20,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 23:46:20,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 23:46:20,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 23:46:20,950 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2020-09-24 23:46:20,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:46:20,950 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 23:46:20,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 23:46:20,951 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 23:46:20,951 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 23:46:20,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 23:46:20,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 23:46:21,081 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 23:46:21,081 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 23:46:21,081 INFO L268 CegarLoopResult]: For program point gcdFINAL(lines 15 26) no Hoare annotation was computed. [2020-09-24 23:46:21,081 INFO L268 CegarLoopResult]: For program point gcdEXIT(lines 15 26) no Hoare annotation was computed. [2020-09-24 23:46:21,082 INFO L264 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (and (<= 1 gcd_~y2) (<= (+ gcd_~y1 1) gcd_~y2) (<= |gcd_#in~y2| gcd_~y2) (<= gcd_~y1 |gcd_#in~y1|) (<= |gcd_#in~y1| gcd_~y1) (<= gcd_~y2 |gcd_#in~y2|)) [2020-09-24 23:46:21,082 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-09-24 23:46:21,082 INFO L271 CegarLoopResult]: At program point gcdENTRY(lines 15 26) the Hoare annotation is: true [2020-09-24 23:46:21,082 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (and (<= 1 gcd_~y2) (<= (+ gcd_~y2 1) gcd_~y1) (<= |gcd_#in~y2| gcd_~y2) (<= gcd_~y1 |gcd_#in~y1|) (<= |gcd_#in~y1| gcd_~y1) (<= gcd_~y2 |gcd_#in~y2|)) [2020-09-24 23:46:21,082 INFO L268 CegarLoopResult]: For program point L25-2(line 25) no Hoare annotation was computed. [2020-09-24 23:46:21,082 INFO L268 CegarLoopResult]: For program point L22(lines 22 24) no Hoare annotation was computed. [2020-09-24 23:46:21,083 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-24 23:46:21,083 INFO L268 CegarLoopResult]: For program point L25-3(line 25) no Hoare annotation was computed. [2020-09-24 23:46:21,083 INFO L268 CegarLoopResult]: For program point L23-2(line 23) no Hoare annotation was computed. [2020-09-24 23:46:21,083 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-24 23:46:21,083 INFO L268 CegarLoopResult]: For program point L23-3(line 23) no Hoare annotation was computed. [2020-09-24 23:46:21,083 INFO L268 CegarLoopResult]: For program point L19(lines 19 21) no Hoare annotation was computed. [2020-09-24 23:46:21,083 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-24 23:46:21,083 INFO L268 CegarLoopResult]: For program point L16(lines 16 18) no Hoare annotation was computed. [2020-09-24 23:46:21,084 INFO L268 CegarLoopResult]: For program point L15(lines 15 26) no Hoare annotation was computed. [2020-09-24 23:46:21,084 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 23:46:21,084 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 23:46:21,084 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 23:46:21,084 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 23:46:21,084 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-24 23:46:21,084 INFO L268 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-09-24 23:46:21,084 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-24 23:46:21,084 INFO L268 CegarLoopResult]: For program point L33-2(line 33) no Hoare annotation was computed. [2020-09-24 23:46:21,085 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-09-24 23:46:21,087 INFO L268 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed. [2020-09-24 23:46:21,087 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 28 43) no Hoare annotation was computed. [2020-09-24 23:46:21,088 INFO L268 CegarLoopResult]: For program point L38(lines 38 42) no Hoare annotation was computed. [2020-09-24 23:46:21,088 INFO L268 CegarLoopResult]: For program point L38-1(lines 28 43) no Hoare annotation was computed. [2020-09-24 23:46:21,088 INFO L268 CegarLoopResult]: For program point L34(lines 34 36) no Hoare annotation was computed. [2020-09-24 23:46:21,088 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 39) no Hoare annotation was computed. [2020-09-24 23:46:21,088 INFO L268 CegarLoopResult]: For program point L30(lines 30 32) no Hoare annotation was computed. [2020-09-24 23:46:21,088 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 28 43) the Hoare annotation is: true [2020-09-24 23:46:21,089 INFO L268 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-09-24 23:46:21,089 INFO L268 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-09-24 23:46:21,089 INFO L264 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (and (<= 1 main_~n~0) (<= 1 main_~m~0)) [2020-09-24 23:46:21,089 INFO L268 CegarLoopResult]: For program point L37-1(line 37) no Hoare annotation was computed. [2020-09-24 23:46:21,090 INFO L268 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-09-24 23:46:21,090 INFO L268 CegarLoopResult]: For program point L37-2(line 37) no Hoare annotation was computed. [2020-09-24 23:46:21,090 INFO L268 CegarLoopResult]: For program point L37-3(line 37) no Hoare annotation was computed. [2020-09-24 23:46:21,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 11:46:21 BoogieIcfgContainer [2020-09-24 23:46:21,101 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 23:46:21,106 INFO L168 Benchmark]: Toolchain (without parser) took 50989.04 ms. Allocated memory was 140.0 MB in the beginning and 434.6 MB in the end (delta: 294.6 MB). Free memory was 103.6 MB in the beginning and 189.3 MB in the end (delta: -85.6 MB). Peak memory consumption was 209.0 MB. Max. memory is 7.1 GB. [2020-09-24 23:46:21,106 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.2 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-09-24 23:46:21,107 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.78 ms. Allocated memory is still 140.0 MB. Free memory was 103.0 MB in the beginning and 93.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-09-24 23:46:21,114 INFO L168 Benchmark]: Boogie Preprocessor took 28.95 ms. Allocated memory is still 140.0 MB. Free memory was 93.0 MB in the beginning and 91.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-24 23:46:21,118 INFO L168 Benchmark]: RCFGBuilder took 439.30 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 91.7 MB in the beginning and 167.2 MB in the end (delta: -75.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-09-24 23:46:21,119 INFO L168 Benchmark]: TraceAbstraction took 50172.26 ms. Allocated memory was 202.4 MB in the beginning and 434.6 MB in the end (delta: 232.3 MB). Free memory was 166.6 MB in the beginning and 189.3 MB in the end (delta: -22.7 MB). Peak memory consumption was 209.5 MB. Max. memory is 7.1 GB. [2020-09-24 23:46:21,124 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.2 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 329.78 ms. Allocated memory is still 140.0 MB. Free memory was 103.0 MB in the beginning and 93.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.95 ms. Allocated memory is still 140.0 MB. Free memory was 93.0 MB in the beginning and 91.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 439.30 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 91.7 MB in the beginning and 167.2 MB in the end (delta: -75.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 50172.26 ms. Allocated memory was 202.4 MB in the beginning and 434.6 MB in the end (delta: 232.3 MB). Free memory was 166.6 MB in the beginning and 189.3 MB in the end (delta: -22.7 MB). Peak memory consumption was 209.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 39]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 49.9s, OverallIterations: 14, TraceHistogramMax: 4, AutomataDifference: 4.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 424 SDtfs, 614 SDslu, 2220 SDs, 0 SdLazy, 2199 SolverSat, 114 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 352 GetRequests, 125 SyntacticMatches, 4 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 48 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 14 NumberOfFragments, 54 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 19 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 44.9s InterpolantComputationTime, 610 NumberOfCodeBlocks, 610 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 596 ConstructedInterpolants, 0 QuantifiedInterpolants, 93809 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 5 PerfectInterpolantSequences, 191/272 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct!