/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=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 00:54:22,730 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:54:22,734 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:54:22,762 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:54:22,762 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:54:22,764 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:54:22,769 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:54:22,772 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:54:22,775 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:54:22,776 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:54:22,777 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:54:22,778 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:54:22,780 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:54:22,782 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:54:22,785 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:54:22,786 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:54:22,790 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:54:22,791 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:54:22,793 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:54:22,798 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:54:22,800 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:54:22,803 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:54:22,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:54:22,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:54:22,809 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:54:22,809 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:54:22,810 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:54:22,812 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:54:22,813 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:54:22,822 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:54:22,822 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:54:22,823 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:54:22,824 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:54:22,827 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:54:22,828 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:54:22,828 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:54:22,829 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:54:22,829 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:54:22,829 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:54:22,831 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:54:22,831 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:54:22,832 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 [2020-09-25 00:54:22,873 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:54:22,873 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:54:22,875 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:54:22,876 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:54:22,876 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:54:22,876 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:54:22,877 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:54:22,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:54:22,877 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:54:22,877 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:54:22,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:54:22,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:54:22,879 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:54:22,879 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:54:22,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:54:22,879 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:54:22,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:54:22,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:54:22,880 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:54:22,880 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:54:22,880 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:54:22,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:54:22,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:54:22,881 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:54:22,881 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:54:22,881 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:54:22,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:54:22,882 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:54:22,882 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:54:22,882 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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;log-additional-information=true; [2020-09-25 00:54:23,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:54:23,370 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:54:23,376 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:54:23,379 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:54:23,379 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:54:23,380 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_5-2.c [2020-09-25 00:54:23,468 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d6b500382/16d2f7a523d945d59ae494c4b936521c/FLAG06d9f4464 [2020-09-25 00:54:23,959 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:54:23,960 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_5-2.c [2020-09-25 00:54:23,967 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d6b500382/16d2f7a523d945d59ae494c4b936521c/FLAG06d9f4464 [2020-09-25 00:54:24,308 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d6b500382/16d2f7a523d945d59ae494c4b936521c [2020-09-25 00:54:24,320 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:54:24,326 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:54:24,327 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:54:24,328 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:54:24,332 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:54:24,333 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:54:24" (1/1) ... [2020-09-25 00:54:24,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3225ae23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:24, skipping insertion in model container [2020-09-25 00:54:24,338 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:54:24" (1/1) ... [2020-09-25 00:54:24,347 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:54:24,371 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:54:24,617 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:54:24,625 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:54:24,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:54:24,670 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:54:24,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:24 WrapperNode [2020-09-25 00:54:24,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:54:24,673 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:54:24,673 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:54:24,673 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:54:24,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:24" (1/1) ... [2020-09-25 00:54:24,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:24" (1/1) ... [2020-09-25 00:54:24,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:24" (1/1) ... [2020-09-25 00:54:24,701 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:24" (1/1) ... [2020-09-25 00:54:24,705 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:24" (1/1) ... [2020-09-25 00:54:24,709 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:24" (1/1) ... [2020-09-25 00:54:24,710 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:24" (1/1) ... [2020-09-25 00:54:24,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:54:24,712 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:54:24,712 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:54:24,713 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:54:24,714 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:24" (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 [2020-09-25 00:54:24,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:54:24,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:54:24,884 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-25 00:54:24,884 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:54:24,884 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 00:54:24,884 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:54:24,885 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-25 00:54:24,885 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:54:24,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:54:24,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:54:25,113 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:54:25,114 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 00:54:25,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:54:25 BoogieIcfgContainer [2020-09-25 00:54:25,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:54:25,124 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:54:25,125 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:54:25,130 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:54:25,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:54:24" (1/3) ... [2020-09-25 00:54:25,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f8bb3e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:54:25, skipping insertion in model container [2020-09-25 00:54:25,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:24" (2/3) ... [2020-09-25 00:54:25,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f8bb3e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:54:25, skipping insertion in model container [2020-09-25 00:54:25,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:54:25" (3/3) ... [2020-09-25 00:54:25,141 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_5-2.c [2020-09-25 00:54:25,166 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:54:25,177 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 00:54:25,209 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 00:54:25,239 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:54:25,240 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:54:25,240 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:54:25,240 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:54:25,240 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:54:25,241 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:54:25,241 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:54:25,241 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:54:25,264 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-25 00:54:25,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 00:54:25,272 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:54:25,273 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:54:25,273 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:54:25,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:54:25,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-25 00:54:25,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:54:25,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [462409810] [2020-09-25 00:54:25,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:54:25,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:25,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:25,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:25,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:25,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 00:54:25,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:54:25,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-09-25 00:54:25,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:25,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:54:25,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 00:54:25,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:54:25,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 00:54:25,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:54:25,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:25,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:25,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:25,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:54:25,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:25,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:54:25,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:25,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:54:25,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:25,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:54:25,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:25,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:54:25,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:25,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:25,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:25,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:54:25,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:25,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 00:54:25,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:25,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:54:25,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:25,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:54:25,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:25,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:54:25,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [462409810] [2020-09-25 00:54:25,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:54:25,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:54:25,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221609520] [2020-09-25 00:54:25,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:54:25,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:54:25,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:54:25,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:54:25,759 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-25 00:54:25,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:54:25,857 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-25 00:54:25,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:54:25,860 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 00:54:25,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:54:25,876 INFO L225 Difference]: With dead ends: 44 [2020-09-25 00:54:25,877 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 00:54:25,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 00:54:25,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 00:54:25,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 00:54:25,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 00:54:25,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 00:54:25,937 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-25 00:54:25,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:54:25,938 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 00:54:25,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 00:54:25,938 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 00:54:25,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 00:54:25,941 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:54:25,941 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:54:25,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:54:25,942 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:54:25,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:54:25,942 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-25 00:54:25,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:54:25,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169033112] [2020-09-25 00:54:25,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:54:25,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:25,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:26,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:26,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:26,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 00:54:26,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:54:26,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-09-25 00:54:26,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:26,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:54:26,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 00:54:26,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:54:26,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:26,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:54:26,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:26,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:26,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:26,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:54:26,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:26,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:54:26,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:26,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:54:26,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:26,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:54:26,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:26,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:54:26,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:26,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:26,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:26,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:54:26,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:26,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 00:54:26,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:26,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:54:26,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:26,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:54:26,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:26,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:54:26,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [169033112] [2020-09-25 00:54:26,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:54:26,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:54:26,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145813147] [2020-09-25 00:54:26,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:54:26,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:54:26,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:54:26,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:54:26,211 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-25 00:54:26,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:54:26,244 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-25 00:54:26,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:54:26,245 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 00:54:26,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:54:26,246 INFO L225 Difference]: With dead ends: 36 [2020-09-25 00:54:26,246 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 00:54:26,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 00:54:26,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 00:54:26,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-25 00:54:26,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 00:54:26,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 00:54:26,256 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-25 00:54:26,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:54:26,257 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 00:54:26,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 00:54:26,257 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 00:54:26,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 00:54:26,258 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:54:26,259 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 00:54:26,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 00:54:26,259 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:54:26,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:54:26,260 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-25 00:54:26,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:54:26,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269902542] [2020-09-25 00:54:26,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:54:26,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:26,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:26,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:26,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:26,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:28,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:28,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 00:54:28,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 00:54:28,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1951 [2020-09-25 00:54:28,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:28,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:54:28,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 00:54:28,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 00:54:28,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:28,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:54:28,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:28,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:28,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:28,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:54:28,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:28,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:54:28,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:28,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:54:28,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:28,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:54:28,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:28,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:54:28,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:28,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:28,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:28,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:28,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 00:54:28,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:54:28,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-09-25 00:54:28,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:28,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:54:28,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 00:54:28,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:54:28,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:28,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:54:28,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:28,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:28,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:28,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:54:28,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:28,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:54:28,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:28,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:54:28,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:54:28,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:54:28,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:28,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 00:54:28,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:28,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:28,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:28,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:54:28,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:28,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:54:28,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:28,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:54:28,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 00:54:28,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:54:28,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:28,676 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 00:54:28,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269902542] [2020-09-25 00:54:28,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:54:28,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 00:54:28,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354937092] [2020-09-25 00:54:28,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 00:54:28,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:54:28,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 00:54:28,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 00:54:28,679 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 8 states. [2020-09-25 00:54:28,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:54:28,798 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2020-09-25 00:54:28,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:54:28,798 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-09-25 00:54:28,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:54:28,800 INFO L225 Difference]: With dead ends: 52 [2020-09-25 00:54:28,800 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 00:54:28,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 00:54:28,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 00:54:28,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-25 00:54:28,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 00:54:28,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-09-25 00:54:28,810 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 33 [2020-09-25 00:54:28,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:54:28,810 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-09-25 00:54:28,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 00:54:28,811 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-09-25 00:54:28,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 00:54:28,812 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:54:28,813 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 00:54:28,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 00:54:28,813 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:54:28,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:54:28,814 INFO L82 PathProgramCache]: Analyzing trace with hash -643371531, now seen corresponding path program 1 times [2020-09-25 00:54:28,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:54:28,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606489224] [2020-09-25 00:54:28,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:54:28,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:28,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:28,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:29,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:29,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:29,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 00:54:29,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:54:29,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1078 [2020-09-25 00:54:29,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:29,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:54:29,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 00:54:29,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 00:54:29,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:29,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:54:29,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:29,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:29,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:29,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:54:29,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:29,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:54:29,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:29,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:54:29,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:29,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:54:29,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:29,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:54:29,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:29,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:30,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:30,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:54:30,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:30,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 00:54:30,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:30,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:54:30,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:30,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 00:54:30,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:30,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:54:30,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:30,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:30,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:30,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:54:30,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:30,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 00:54:30,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:30,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:54:30,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:30,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:54:30,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:30,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:54:30,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:30,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:30,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:30,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:54:30,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:30,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 00:54:30,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:30,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:54:30,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:30,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:54:30,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:30,147 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 00:54:30,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606489224] [2020-09-25 00:54:30,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:54:30,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 00:54:30,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435075215] [2020-09-25 00:54:30,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 00:54:30,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:54:30,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 00:54:30,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 00:54:30,156 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 8 states. [2020-09-25 00:54:30,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:54:30,313 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2020-09-25 00:54:30,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 00:54:30,315 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-09-25 00:54:30,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:54:30,318 INFO L225 Difference]: With dead ends: 48 [2020-09-25 00:54:30,318 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 00:54:30,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-25 00:54:30,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 00:54:30,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2020-09-25 00:54:30,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-25 00:54:30,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-09-25 00:54:30,340 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 34 [2020-09-25 00:54:30,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:54:30,340 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-09-25 00:54:30,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 00:54:30,341 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2020-09-25 00:54:30,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 00:54:30,345 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:54:30,345 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] [2020-09-25 00:54:30,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 00:54:30,346 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:54:30,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:54:30,347 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-25 00:54:30,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:54:30,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343333084] [2020-09-25 00:54:30,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:54:30,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:30,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:30,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:30,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:30,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:30,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:31,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:31,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 00:54:31,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 00:54:31,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1630 [2020-09-25 00:54:31,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:31,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:54:31,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 00:54:31,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 00:54:31,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:32,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:54:32,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:32,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:32,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:32,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:54:32,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:32,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:54:32,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:32,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:54:32,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:32,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:54:32,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:32,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:54:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:32,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:32,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:32,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:32,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:32,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 00:54:32,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:54:32,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 471 [2020-09-25 00:54:32,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:32,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:54:32,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 00:54:32,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 00:54:32,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:32,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:54:32,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:32,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:32,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:32,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:54:32,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:32,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 00:54:32,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:32,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:54:32,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:32,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:54:32,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:32,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:54:32,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:32,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:32,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:32,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:32,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:54:32,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:54:32,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 00:54:32,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:32,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:54:32,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:54:32,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:54:32,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:32,660 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 00:54:32,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343333084] [2020-09-25 00:54:32,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:54:32,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 00:54:32,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080170182] [2020-09-25 00:54:32,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 00:54:32,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:54:32,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 00:54:32,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:54:32,664 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 9 states. [2020-09-25 00:54:32,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:54:32,900 INFO L93 Difference]: Finished difference Result 79 states and 106 transitions. [2020-09-25 00:54:32,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 00:54:32,902 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-09-25 00:54:32,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:54:32,903 INFO L225 Difference]: With dead ends: 79 [2020-09-25 00:54:32,903 INFO L226 Difference]: Without dead ends: 48 [2020-09-25 00:54:32,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-09-25 00:54:32,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-25 00:54:32,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2020-09-25 00:54:32,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 00:54:32,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2020-09-25 00:54:32,913 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 35 [2020-09-25 00:54:32,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:54:32,914 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2020-09-25 00:54:32,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 00:54:32,914 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2020-09-25 00:54:32,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 00:54:32,920 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:54:32,920 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:54:32,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 00:54:32,923 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:54:32,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:54:32,924 INFO L82 PathProgramCache]: Analyzing trace with hash 99184320, now seen corresponding path program 2 times [2020-09-25 00:54:32,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:54:32,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958266271] [2020-09-25 00:54:32,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:54:32,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:32,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:32,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:33,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:33,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:37,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:37,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 00:54:37,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 00:54:37,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 00:54:37,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:37,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 00:54:37,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 00:54:37,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 00:54:37,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:37,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:54:37,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:37,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:37,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:37,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:54:37,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:37,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:54:37,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:37,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:54:37,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:37,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:54:37,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:37,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:54:37,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:37,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:38,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:38,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 00:54:38,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:38,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-09-25 00:54:38,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:38,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 00:54:38,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:38,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 00:54:38,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 00:54:38,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:54:38,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:38,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:38,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:38,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:54:38,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:38,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 00:54:38,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:38,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:54:38,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:38,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 00:54:38,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:38,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:54:38,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:38,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:38,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:38,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:54:38,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:38,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 00:54:38,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:38,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:54:38,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:38,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:54:38,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:38,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:54:38,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:38,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:38,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:38,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:54:38,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:38,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 00:54:38,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:38,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:54:38,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:38,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:54:38,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:38,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 00:54:38,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:38,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:38,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:38,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:54:38,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:38,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 00:54:38,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:38,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:54:38,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:38,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:54:38,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:38,417 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 00:54:38,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958266271] [2020-09-25 00:54:38,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:54:38,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 00:54:38,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461833503] [2020-09-25 00:54:38,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 00:54:38,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:54:38,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 00:54:38,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-09-25 00:54:38,421 INFO L87 Difference]: Start difference. First operand 42 states and 52 transitions. Second operand 12 states. [2020-09-25 00:54:38,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:54:38,595 INFO L93 Difference]: Finished difference Result 70 states and 90 transitions. [2020-09-25 00:54:38,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 00:54:38,596 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2020-09-25 00:54:38,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:54:38,598 INFO L225 Difference]: With dead ends: 70 [2020-09-25 00:54:38,598 INFO L226 Difference]: Without dead ends: 64 [2020-09-25 00:54:38,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2020-09-25 00:54:38,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-09-25 00:54:38,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 56. [2020-09-25 00:54:38,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-25 00:54:38,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 76 transitions. [2020-09-25 00:54:38,609 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 76 transitions. Word has length 52 [2020-09-25 00:54:38,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:54:38,610 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 76 transitions. [2020-09-25 00:54:38,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 00:54:38,610 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 76 transitions. [2020-09-25 00:54:38,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 00:54:38,613 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:54:38,613 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:54:38,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 00:54:38,614 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:54:38,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:54:38,614 INFO L82 PathProgramCache]: Analyzing trace with hash 501566307, now seen corresponding path program 3 times [2020-09-25 00:54:38,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:54:38,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999151006] [2020-09-25 00:54:38,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:54:38,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:38,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:38,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:38,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:38,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:38,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:38,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:39,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:39,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:41,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:41,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:43,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:43,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-25 00:54:43,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 00:54:43,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 00:54:43,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:43,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 00:54:43,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 00:54:43,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 00:54:43,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:43,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:54:43,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:43,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:43,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:43,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:54:43,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:43,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:54:43,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:43,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:54:43,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:43,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:54:43,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:43,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:54:43,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:43,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:43,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:43,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:43,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:43,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:44,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:44,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:44,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:44,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:47,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:48,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:48,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:48,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:48,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:48,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:48,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:48,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 00:54:48,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 00:54:48,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 00:54:48,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:48,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 00:54:48,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 00:54:48,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 00:54:48,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:48,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:54:48,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:48,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:48,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:48,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:48,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:54:48,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:54:48,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-09-25 00:54:48,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:48,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:54:48,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:48,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 00:54:48,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:48,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:54:48,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:48,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:48,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:48,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:54:48,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:48,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 00:54:48,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:48,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:54:48,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:48,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:54:48,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:48,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:54:48,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:48,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:48,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:48,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:54:48,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:48,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:54:48,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:48,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:54:48,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:48,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:54:48,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:49,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 00:54:49,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:49,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:49,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:49,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:49,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:49,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:49,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:51,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:51,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 00:54:51,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 00:54:51,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2618 [2020-09-25 00:54:51,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:51,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:54:51,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:54:51,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 00:54:51,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:51,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:54:51,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:51,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:51,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:51,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:54:51,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:51,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 00:54:51,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:51,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:54:51,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:51,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 00:54:51,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:51,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:54:51,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:51,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:51,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:51,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:54:51,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:51,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:54:51,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:51,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:54:51,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:51,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:54:51,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:51,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:54:51,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:51,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:51,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:51,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:54:51,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:51,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:54:51,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:51,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:54:51,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:51,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:54:51,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:51,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 00:54:51,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:51,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:51,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:51,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:51,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:54:51,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:54:51,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 00:54:51,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:51,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:54:51,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:51,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:54:51,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:51,754 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 84 proven. 58 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-09-25 00:54:51,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999151006] [2020-09-25 00:54:51,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:54:51,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 00:54:51,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190667673] [2020-09-25 00:54:51,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 00:54:51,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:54:51,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 00:54:51,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:54:51,757 INFO L87 Difference]: Start difference. First operand 56 states and 76 transitions. Second operand 9 states. [2020-09-25 00:54:51,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:54:51,982 INFO L93 Difference]: Finished difference Result 128 states and 194 transitions. [2020-09-25 00:54:51,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 00:54:51,982 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-09-25 00:54:51,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:54:51,986 INFO L225 Difference]: With dead ends: 128 [2020-09-25 00:54:51,986 INFO L226 Difference]: Without dead ends: 78 [2020-09-25 00:54:51,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-09-25 00:54:51,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-25 00:54:51,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 64. [2020-09-25 00:54:51,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-25 00:54:52,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 85 transitions. [2020-09-25 00:54:52,001 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 85 transitions. Word has length 87 [2020-09-25 00:54:52,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:54:52,002 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 85 transitions. [2020-09-25 00:54:52,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 00:54:52,002 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 85 transitions. [2020-09-25 00:54:52,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 00:54:52,004 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:54:52,004 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:54:52,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 00:54:52,005 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:54:52,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:54:52,005 INFO L82 PathProgramCache]: Analyzing trace with hash -758395752, now seen corresponding path program 4 times [2020-09-25 00:54:52,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:54:52,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035395703] [2020-09-25 00:54:52,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:54:52,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:52,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:52,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:52,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:52,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:52,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:52,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:52,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:53,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:54,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:54,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:56,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:56,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:56,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:57,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:57,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 00:54:57,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 00:54:57,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 00:54:57,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:57,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 00:54:57,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 00:54:57,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 00:54:57,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:57,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:54:57,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:57,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:57,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:57,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:54:57,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:57,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:54:57,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:57,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:54:57,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:57,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:54:57,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:57,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:54:57,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:57,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:57,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:57,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:57,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:57,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:57,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:57,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:57,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:59,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:02,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:02,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 00:55:02,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 00:55:02,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 00:55:02,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:02,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 00:55:02,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 00:55:02,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 00:55:02,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:02,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:55:02,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:02,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:02,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:02,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:02,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:55:02,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:55:02,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-09-25 00:55:02,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:02,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:55:02,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:02,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 00:55:02,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:02,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:55:02,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:02,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:02,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:02,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:55:02,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:02,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:55:02,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:02,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:55:02,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:02,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:55:02,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:02,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:55:02,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:02,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:02,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:02,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:55:02,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:02,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:55:02,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:02,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:55:02,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:02,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:55:02,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:02,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 00:55:02,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:02,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:02,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:02,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:02,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:02,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:55:02,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:55:02,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-09-25 00:55:02,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:02,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:55:02,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:55:02,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 00:55:02,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:02,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:55:02,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:02,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:02,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:02,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:55:02,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:02,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 00:55:02,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:02,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:55:02,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:02,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:55:02,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:02,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:55:02,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:02,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:02,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:02,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:55:02,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:02,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:55:02,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:02,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:55:02,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:02,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:55:02,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:02,565 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 40 proven. 39 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-09-25 00:55:02,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035395703] [2020-09-25 00:55:02,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:55:02,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 00:55:02,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792574257] [2020-09-25 00:55:02,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 00:55:02,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:55:02,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 00:55:02,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:55:02,567 INFO L87 Difference]: Start difference. First operand 64 states and 85 transitions. Second operand 9 states. [2020-09-25 00:55:02,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:55:02,939 INFO L93 Difference]: Finished difference Result 130 states and 176 transitions. [2020-09-25 00:55:02,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 00:55:02,941 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-09-25 00:55:02,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:55:02,943 INFO L225 Difference]: With dead ends: 130 [2020-09-25 00:55:02,943 INFO L226 Difference]: Without dead ends: 67 [2020-09-25 00:55:02,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-09-25 00:55:02,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-09-25 00:55:02,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 61. [2020-09-25 00:55:02,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-25 00:55:02,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2020-09-25 00:55:02,952 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 69 [2020-09-25 00:55:02,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:55:02,953 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2020-09-25 00:55:02,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 00:55:02,953 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2020-09-25 00:55:02,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 00:55:02,954 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:55:02,955 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:55:02,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 00:55:02,955 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:55:02,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:55:02,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1742794134, now seen corresponding path program 5 times [2020-09-25 00:55:02,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:55:02,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263055722] [2020-09-25 00:55:02,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:55:02,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:02,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:02,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:03,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:03,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:03,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:03,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:03,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:03,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:04,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:07,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:07,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 00:55:07,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 00:55:07,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 00:55:07,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:07,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:55:07,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 00:55:07,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 00:55:07,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:07,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:55:07,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:07,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:07,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:07,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:55:07,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:07,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:55:07,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:07,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:55:07,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:07,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:55:07,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:07,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:55:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:07,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:08,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:08,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:08,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:08,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:08,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:09,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:09,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:09,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:12,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:12,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 00:55:12,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 00:55:12,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 00:55:12,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:12,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:55:12,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 00:55:12,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 00:55:12,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:12,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:55:13,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:13,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:13,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:13,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:13,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:13,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:13,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 00:55:13,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 00:55:13,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 958 [2020-09-25 00:55:13,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:13,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:55:13,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 00:55:13,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 00:55:13,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:13,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:55:13,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:13,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:13,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:13,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:14,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:14,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:55:14,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:55:14,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-09-25 00:55:14,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:14,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:55:14,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:14,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 00:55:14,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:14,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:55:14,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:14,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:14,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:14,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:14,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:55:14,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:55:14,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 00:55:14,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:14,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:55:14,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:14,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:55:14,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:14,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:55:14,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:14,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:14,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:14,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:55:14,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:14,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:55:14,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:14,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:55:14,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:14,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:55:14,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:14,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 00:55:14,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:14,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:14,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:14,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:55:14,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:14,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:55:14,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:14,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:55:14,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:55:14,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:55:14,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:14,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 00:55:14,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:14,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:14,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:14,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:55:14,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:14,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:55:14,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:14,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:55:14,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 00:55:14,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:55:14,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:14,264 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 51 proven. 27 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-09-25 00:55:14,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263055722] [2020-09-25 00:55:14,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:55:14,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 00:55:14,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899898879] [2020-09-25 00:55:14,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 00:55:14,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:55:14,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 00:55:14,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:55:14,267 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand 9 states. [2020-09-25 00:55:14,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:55:14,426 INFO L93 Difference]: Finished difference Result 110 states and 136 transitions. [2020-09-25 00:55:14,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 00:55:14,431 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-09-25 00:55:14,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:55:14,432 INFO L225 Difference]: With dead ends: 110 [2020-09-25 00:55:14,432 INFO L226 Difference]: Without dead ends: 55 [2020-09-25 00:55:14,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-09-25 00:55:14,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-25 00:55:14,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2020-09-25 00:55:14,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-25 00:55:14,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2020-09-25 00:55:14,447 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 69 [2020-09-25 00:55:14,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:55:14,447 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2020-09-25 00:55:14,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 00:55:14,447 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2020-09-25 00:55:14,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 00:55:14,448 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:55:14,448 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:55:14,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 00:55:14,449 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:55:14,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:55:14,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1505694539, now seen corresponding path program 6 times [2020-09-25 00:55:14,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:55:14,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1721040717] [2020-09-25 00:55:14,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:55:14,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:14,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:14,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:14,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:14,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:14,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:14,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:15,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:15,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:18,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking...