/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/prefixsum_rec.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 21:15:15,726 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 21:15:15,728 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 21:15:15,769 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 21:15:15,769 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 21:15:15,776 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 21:15:15,778 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 21:15:15,782 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 21:15:15,785 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 21:15:15,788 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 21:15:15,789 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 21:15:15,790 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 21:15:15,790 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 21:15:15,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 21:15:15,795 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 21:15:15,797 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 21:15:15,798 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 21:15:15,800 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 21:15:15,802 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 21:15:15,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 21:15:15,811 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 21:15:15,812 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 21:15:15,813 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 21:15:15,814 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 21:15:15,826 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 21:15:15,827 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 21:15:15,829 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 21:15:15,830 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 21:15:15,830 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 21:15:15,831 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 21:15:15,831 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 21:15:15,835 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 21:15:15,836 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 21:15:15,837 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 21:15:15,838 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 21:15:15,838 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 21:15:15,842 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 21:15:15,842 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 21:15:15,842 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 21:15:15,843 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 21:15:15,844 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 21:15:15,847 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 21:15:15,882 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 21:15:15,882 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 21:15:15,883 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 21:15:15,883 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 21:15:15,883 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 21:15:15,884 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 21:15:15,884 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 21:15:15,884 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 21:15:15,884 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 21:15:15,885 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 21:15:15,885 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 21:15:15,885 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 21:15:15,885 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 21:15:15,885 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 21:15:15,885 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 21:15:15,886 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 21:15:15,886 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 21:15:15,886 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 21:15:15,886 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 21:15:15,886 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 21:15:15,887 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 21:15:15,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 21:15:15,887 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 21:15:15,887 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 21:15:15,888 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 21:15:15,888 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 21:15:15,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 21:15:15,888 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 21:15:15,888 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 21:15:15,888 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 21:15:16,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 21:15:16,193 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 21:15:16,196 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 21:15:16,198 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 21:15:16,198 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 21:15:16,199 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/prefixsum_rec.c [2020-10-12 21:15:16,261 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b35ed9803/dc69330dbc224653bf6ca02fb9ecc039/FLAG0e288cd5b [2020-10-12 21:15:16,707 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 21:15:16,708 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/prefixsum_rec.c [2020-10-12 21:15:16,716 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b35ed9803/dc69330dbc224653bf6ca02fb9ecc039/FLAG0e288cd5b [2020-10-12 21:15:17,049 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b35ed9803/dc69330dbc224653bf6ca02fb9ecc039 [2020-10-12 21:15:17,057 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 21:15:17,059 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 21:15:17,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 21:15:17,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 21:15:17,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 21:15:17,065 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:15:17" (1/1) ... [2020-10-12 21:15:17,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7503bbdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:15:17, skipping insertion in model container [2020-10-12 21:15:17,068 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:15:17" (1/1) ... [2020-10-12 21:15:17,076 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 21:15:17,096 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 21:15:17,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 21:15:17,307 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 21:15:17,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 21:15:17,451 INFO L208 MainTranslator]: Completed translation [2020-10-12 21:15:17,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:15:17 WrapperNode [2020-10-12 21:15:17,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 21:15:17,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 21:15:17,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 21:15:17,454 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 21:15:17,465 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:15:17" (1/1) ... [2020-10-12 21:15:17,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:15:17" (1/1) ... [2020-10-12 21:15:17,476 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:15:17" (1/1) ... [2020-10-12 21:15:17,477 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:15:17" (1/1) ... [2020-10-12 21:15:17,489 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:15:17" (1/1) ... [2020-10-12 21:15:17,495 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:15:17" (1/1) ... [2020-10-12 21:15:17,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:15:17" (1/1) ... [2020-10-12 21:15:17,501 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 21:15:17,501 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 21:15:17,501 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 21:15:17,502 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 21:15:17,503 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:15:17" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 21:15:17,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 21:15:17,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 21:15:17,570 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 21:15:17,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 21:15:17,571 INFO L138 BoogieDeclarations]: Found implementation of procedure upsweep [2020-10-12 21:15:17,571 INFO L138 BoogieDeclarations]: Found implementation of procedure downsweep [2020-10-12 21:15:17,571 INFO L138 BoogieDeclarations]: Found implementation of procedure is_pow2 [2020-10-12 21:15:17,572 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-12 21:15:17,572 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 21:15:17,572 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-12 21:15:17,573 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-12 21:15:17,573 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-12 21:15:17,573 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 21:15:17,573 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 21:15:17,573 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 21:15:17,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 21:15:17,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 21:15:17,575 INFO L130 BoogieDeclarations]: Found specification of procedure upsweep [2020-10-12 21:15:17,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 21:15:17,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 21:15:17,575 INFO L130 BoogieDeclarations]: Found specification of procedure downsweep [2020-10-12 21:15:17,575 INFO L130 BoogieDeclarations]: Found specification of procedure is_pow2 [2020-10-12 21:15:17,575 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 21:15:17,575 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 21:15:17,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 21:15:17,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-12 21:15:17,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 21:15:17,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 21:15:17,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 21:15:17,990 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 21:15:17,990 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-12 21:15:17,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:15:17 BoogieIcfgContainer [2020-10-12 21:15:17,995 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 21:15:17,996 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 21:15:17,997 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 21:15:18,000 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 21:15:18,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 09:15:17" (1/3) ... [2020-10-12 21:15:18,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b622d32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:15:18, skipping insertion in model container [2020-10-12 21:15:18,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:15:17" (2/3) ... [2020-10-12 21:15:18,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b622d32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:15:18, skipping insertion in model container [2020-10-12 21:15:18,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:15:17" (3/3) ... [2020-10-12 21:15:18,004 INFO L109 eAbstractionObserver]: Analyzing ICFG prefixsum_rec.c [2020-10-12 21:15:18,014 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 21:15:18,022 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 21:15:18,036 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 21:15:18,057 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 21:15:18,057 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 21:15:18,057 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 21:15:18,057 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 21:15:18,058 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 21:15:18,058 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 21:15:18,058 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 21:15:18,058 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 21:15:18,076 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2020-10-12 21:15:18,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-12 21:15:18,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:15:18,086 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:15:18,086 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:15:18,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:15:18,093 INFO L82 PathProgramCache]: Analyzing trace with hash -781002092, now seen corresponding path program 1 times [2020-10-12 21:15:18,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:15:18,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804971388] [2020-10-12 21:15:18,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:15:18,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:18,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:18,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:18,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:19,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:20,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:20,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 21:15:20,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 21:15:20,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2740 [2020-10-12 21:15:20,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:20,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 21:15:20,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-12 21:15:20,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 21:15:20,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 21:15:21,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:15:21,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:21,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:21,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:21,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:15:21,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:21,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 21:15:21,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:21,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:21,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:21,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:21,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:15:21,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 21:15:21,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:21,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:21,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:21,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:21,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:21,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 21:15:21,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 21:15:21,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:21,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:21,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:21,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:21,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:15:21,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-12 21:15:21,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:21,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:21,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:21,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 21:15:21,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:21,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 21:15:21,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:21,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:21,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:21,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:21,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:21,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 21:15:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:21,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:21,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:21,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:21,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:21,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 21:15:21,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:15:21,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:21,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:21,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:21,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:21,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:15:21,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-12 21:15:21,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:21,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:21,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:21,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:15:21,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:21,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 21:15:21,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:21,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 21:15:21,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:21,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:15:21,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:15:21,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 21:15:21,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:21,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:21,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:21,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:15:21,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:21,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 21:15:21,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:21,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 21:15:21,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 21:15:21,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 21:15:21,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:15:21,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 21:15:21,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:21,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:21,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:21,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 21:15:21,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:21,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-12 21:15:21,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:21,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 21:15:21,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 21:15:21,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 21:15:21,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:15:22,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 21:15:22,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:22,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:22,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:22,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:22,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:22,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-12 21:15:22,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:22,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 21:15:22,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 21:15:22,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 21:15:22,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:22,115 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 21:15:22,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804971388] [2020-10-12 21:15:22,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:15:22,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 21:15:22,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612279769] [2020-10-12 21:15:22,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 21:15:22,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:15:22,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 21:15:22,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-12 21:15:22,149 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 14 states. [2020-10-12 21:15:23,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:15:23,366 INFO L93 Difference]: Finished difference Result 149 states and 200 transitions. [2020-10-12 21:15:23,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 21:15:23,369 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-10-12 21:15:23,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:15:23,382 INFO L225 Difference]: With dead ends: 149 [2020-10-12 21:15:23,383 INFO L226 Difference]: Without dead ends: 78 [2020-10-12 21:15:23,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2020-10-12 21:15:23,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-12 21:15:23,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 72. [2020-10-12 21:15:23,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-12 21:15:23,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 88 transitions. [2020-10-12 21:15:23,455 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 88 transitions. Word has length 54 [2020-10-12 21:15:23,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:15:23,455 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 88 transitions. [2020-10-12 21:15:23,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 21:15:23,456 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 88 transitions. [2020-10-12 21:15:23,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-12 21:15:23,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:15:23,464 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:15:23,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 21:15:23,465 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:15:23,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:15:23,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1800540891, now seen corresponding path program 1 times [2020-10-12 21:15:23,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:15:23,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904491031] [2020-10-12 21:15:23,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:15:23,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:23,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:23,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:23,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:23,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:26,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:28,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:28,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 21:15:28,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 21:15:28,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-12 21:15:28,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:28,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 21:15:28,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 21:15:28,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 21:15:28,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:28,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:15:28,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:28,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:28,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:28,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:15:28,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:28,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:15:28,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:28,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:28,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:28,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:28,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:28,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 21:15:28,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:28,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:28,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:28,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:28,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:28,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 21:15:28,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:28,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:15:28,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:28,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:15:28,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:15:28,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-12 21:15:28,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:28,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:28,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:28,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 21:15:28,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:28,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-12 21:15:28,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:28,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 21:15:28,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:28,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 21:15:28,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:28,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 21:15:28,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:28,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:28,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:28,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:28,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:28,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 21:15:28,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:28,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:15:28,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 21:15:28,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:15:28,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 21:15:28,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-12 21:15:28,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:28,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:28,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:28,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:15:28,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:28,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:15:28,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:28,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:28,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 21:15:28,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:28,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:28,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 21:15:28,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:28,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:28,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:28,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:15:28,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:28,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:15:28,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:28,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:28,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 21:15:28,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:28,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:28,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 21:15:28,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:28,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:28,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:28,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 21:15:28,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:28,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 21:15:28,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:28,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:28,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 21:15:28,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:28,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:28,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 21:15:28,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:28,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:28,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:28,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:28,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:28,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 21:15:28,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:28,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:28,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 21:15:28,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:28,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:28,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-12 21:15:28,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:28,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:28,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:28,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:28,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:28,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:15:28,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:28,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:28,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 21:15:28,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:28,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:28,844 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-12 21:15:28,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904491031] [2020-10-12 21:15:28,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:15:28,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 21:15:28,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68336927] [2020-10-12 21:15:28,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 21:15:28,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:15:28,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 21:15:28,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-12 21:15:28,851 INFO L87 Difference]: Start difference. First operand 72 states and 88 transitions. Second operand 10 states. [2020-10-12 21:15:29,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:15:29,506 INFO L93 Difference]: Finished difference Result 131 states and 163 transitions. [2020-10-12 21:15:29,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 21:15:29,507 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 62 [2020-10-12 21:15:29,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:15:29,512 INFO L225 Difference]: With dead ends: 131 [2020-10-12 21:15:29,512 INFO L226 Difference]: Without dead ends: 73 [2020-10-12 21:15:29,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2020-10-12 21:15:29,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-12 21:15:29,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-10-12 21:15:29,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-12 21:15:29,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 89 transitions. [2020-10-12 21:15:29,537 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 89 transitions. Word has length 62 [2020-10-12 21:15:29,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:15:29,538 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 89 transitions. [2020-10-12 21:15:29,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 21:15:29,538 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 89 transitions. [2020-10-12 21:15:29,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-12 21:15:29,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:15:29,540 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:15:29,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 21:15:29,541 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:15:29,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:15:29,541 INFO L82 PathProgramCache]: Analyzing trace with hash 835261205, now seen corresponding path program 1 times [2020-10-12 21:15:29,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:15:29,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953049581] [2020-10-12 21:15:29,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:15:29,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:29,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:29,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:29,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:33,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:34,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:34,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:34,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-12 21:15:34,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 21:15:34,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 21:15:34,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:34,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 21:15:34,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-12 21:15:34,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 21:15:34,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:15:38,691 WARN L193 SmtUtils]: Spent 2.89 s on a formula simplification. DAG size of input: 268 DAG size of output: 12 [2020-10-12 21:15:41,408 WARN L193 SmtUtils]: Spent 2.55 s on a formula simplification. DAG size of input: 344 DAG size of output: 15 [2020-10-12 21:15:41,788 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 9 [2020-10-12 21:15:41,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:15:41,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:41,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:41,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:41,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:15:41,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:41,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 21:15:41,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:41,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:41,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:41,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:41,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 21:15:41,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 21:15:41,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:41,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:41,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:41,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:41,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:41,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:15:41,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:41,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:41,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:41,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:41,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:41,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-12 21:15:41,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:41,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:41,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:41,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 21:15:41,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:41,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 21:15:41,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:41,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:41,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:41,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:41,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:41,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 21:15:41,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:41,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:41,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:41,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:41,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:41,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:15:41,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:41,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:41,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:41,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:41,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:41,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-12 21:15:41,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:41,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:41,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:41,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:15:41,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:41,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 21:15:41,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:41,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 21:15:41,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:41,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:15:41,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:41,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 21:15:41,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:41,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:41,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:41,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:15:41,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:41,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 21:15:41,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:41,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 21:15:41,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 21:15:41,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 21:15:41,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:42,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-12 21:15:42,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:42,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:42,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:42,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 21:15:42,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:42,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 21:15:42,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:42,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 21:15:42,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 21:15:42,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 21:15:42,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:42,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-12 21:15:42,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:42,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:42,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:42,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:42,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:42,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 21:15:42,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:42,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 21:15:42,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 21:15:42,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 21:15:42,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:42,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 21:15:42,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:42,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:42,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:42,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:42,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:42,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 21:15:42,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:42,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:15:42,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:42,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:15:42,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:42,157 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 21:15:42,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1953049581] [2020-10-12 21:15:42,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:15:42,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 21:15:42,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328097386] [2020-10-12 21:15:42,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 21:15:42,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:15:42,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 21:15:42,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-10-12 21:15:42,161 INFO L87 Difference]: Start difference. First operand 73 states and 89 transitions. Second operand 17 states. [2020-10-12 21:15:43,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:15:43,406 INFO L93 Difference]: Finished difference Result 84 states and 102 transitions. [2020-10-12 21:15:43,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 21:15:43,406 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 63 [2020-10-12 21:15:43,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:15:43,411 INFO L225 Difference]: With dead ends: 84 [2020-10-12 21:15:43,411 INFO L226 Difference]: Without dead ends: 66 [2020-10-12 21:15:43,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=135, Invalid=735, Unknown=0, NotChecked=0, Total=870 [2020-10-12 21:15:43,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-12 21:15:43,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-12 21:15:43,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-12 21:15:43,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 80 transitions. [2020-10-12 21:15:43,437 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 80 transitions. Word has length 63 [2020-10-12 21:15:43,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:15:43,441 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 80 transitions. [2020-10-12 21:15:43,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 21:15:43,441 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 80 transitions. [2020-10-12 21:15:43,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-12 21:15:43,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:15:43,446 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:15:43,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 21:15:43,447 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:15:43,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:15:43,448 INFO L82 PathProgramCache]: Analyzing trace with hash 445153888, now seen corresponding path program 1 times [2020-10-12 21:15:43,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:15:43,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982767126] [2020-10-12 21:15:43,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:15:43,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:43,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:43,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:43,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:43,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:44,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:44,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:44,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:45,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:48,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:48,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-12 21:15:48,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 21:15:48,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 21:15:48,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:48,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 21:15:48,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 21:15:48,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 21:15:48,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:48,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:15:48,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:48,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:48,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:48,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:15:48,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:48,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:15:48,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:48,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:48,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:48,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:48,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:48,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 21:15:48,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:48,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:48,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:48,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:48,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:48,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 21:15:48,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:48,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:15:48,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:48,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:15:48,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:48,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-12 21:15:48,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:48,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:48,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:48,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 21:15:48,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:48,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-12 21:15:48,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:48,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 21:15:48,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:48,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 21:15:48,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:48,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 21:15:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:48,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:48,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:48,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:48,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:48,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 21:15:48,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:48,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 21:15:48,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:48,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:15:48,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:48,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-12 21:15:48,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:48,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:48,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:48,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:15:48,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:48,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 21:15:48,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:48,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:15:48,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:48,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 21:15:48,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:15:48,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 21:15:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:48,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:48,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:48,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:15:48,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:48,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 21:15:48,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:48,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:15:48,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:48,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 21:15:48,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:15:48,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-12 21:15:48,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:48,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:48,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:48,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 21:15:48,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:48,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 21:15:48,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:48,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:15:48,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:48,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:15:48,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:15:48,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-12 21:15:48,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:48,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:48,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:48,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-12 21:15:48,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:48,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-12 21:15:48,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:48,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:15:48,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 21:15:48,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 21:15:48,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:49,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 21:15:49,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:49,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:49,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:49,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:49,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:49,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 21:15:49,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:49,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:15:49,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:49,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:15:49,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:49,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 21:15:49,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:49,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:49,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:49,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:49,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:49,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 21:15:49,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:49,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:15:49,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:49,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:15:49,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:49,077 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-12 21:15:49,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982767126] [2020-10-12 21:15:49,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:15:49,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 21:15:49,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270114392] [2020-10-12 21:15:49,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 21:15:49,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:15:49,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 21:15:49,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-12 21:15:49,080 INFO L87 Difference]: Start difference. First operand 65 states and 80 transitions. Second operand 15 states. [2020-10-12 21:15:52,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:15:52,302 INFO L93 Difference]: Finished difference Result 96 states and 121 transitions. [2020-10-12 21:15:52,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 21:15:52,306 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 65 [2020-10-12 21:15:52,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:15:52,308 INFO L225 Difference]: With dead ends: 96 [2020-10-12 21:15:52,308 INFO L226 Difference]: Without dead ends: 82 [2020-10-12 21:15:52,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=119, Invalid=637, Unknown=0, NotChecked=0, Total=756 [2020-10-12 21:15:52,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-12 21:15:52,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-12 21:15:52,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-12 21:15:52,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 103 transitions. [2020-10-12 21:15:52,325 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 103 transitions. Word has length 65 [2020-10-12 21:15:52,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:15:52,325 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 103 transitions. [2020-10-12 21:15:52,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 21:15:52,326 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 103 transitions. [2020-10-12 21:15:52,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-12 21:15:52,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:15:52,328 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:15:52,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 21:15:52,328 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:15:52,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:15:52,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1261676944, now seen corresponding path program 2 times [2020-10-12 21:15:52,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:15:52,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1475413616] [2020-10-12 21:15:52,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:15:52,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:52,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:52,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:52,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:52,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:57,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:57,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:57,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-12 21:15:57,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 21:15:57,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 21:15:57,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:57,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 21:15:57,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:15:57,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-12 21:15:57,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:57,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:15:57,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:57,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:57,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:57,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:15:57,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:57,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:15:57,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:57,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:57,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:57,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:57,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:57,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 21:15:57,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:57,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:57,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:57,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:57,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:57,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 21:15:57,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 21:15:57,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:57,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:15:57,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:57,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:15:57,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:57,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-12 21:15:57,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:57,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:57,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:57,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 21:15:57,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:57,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-12 21:15:57,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:57,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 21:15:57,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:57,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 21:15:57,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:57,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 21:15:57,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:57,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:57,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:57,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:57,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:57,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:15:57,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:57,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 21:15:57,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:57,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:15:57,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:57,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 21:15:57,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:57,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:57,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:57,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:15:57,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:57,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:15:57,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:57,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:15:57,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:57,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 21:15:57,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:57,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 21:15:57,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:57,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:57,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:57,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:15:57,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:57,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:15:57,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:57,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:15:57,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:57,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 21:15:57,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:57,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-12 21:15:57,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:57,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:57,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:57,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 21:15:57,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:57,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 21:15:57,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:57,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:15:57,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 21:15:57,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:15:57,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:57,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 21:15:57,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:57,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:57,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:57,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-12 21:15:57,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:57,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 21:15:57,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:57,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:57,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-12 21:15:57,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:57,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:58,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 21:15:58,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:58,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:58,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:58,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:58,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:58,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:15:58,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:58,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:58,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:58,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:58,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:58,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 21:15:58,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:58,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:58,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:58,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:58,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:58,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:15:58,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:58,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:58,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:58,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:58,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:58,032 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-12 21:15:58,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1475413616] [2020-10-12 21:15:58,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:15:58,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 21:15:58,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219433988] [2020-10-12 21:15:58,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 21:15:58,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:15:58,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 21:15:58,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-12 21:15:58,036 INFO L87 Difference]: Start difference. First operand 81 states and 103 transitions. Second operand 16 states. [2020-10-12 21:16:01,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:16:01,612 INFO L93 Difference]: Finished difference Result 120 states and 155 transitions. [2020-10-12 21:16:01,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 21:16:01,613 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 66 [2020-10-12 21:16:01,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:16:01,615 INFO L225 Difference]: With dead ends: 120 [2020-10-12 21:16:01,616 INFO L226 Difference]: Without dead ends: 98 [2020-10-12 21:16:01,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=144, Invalid=848, Unknown=0, NotChecked=0, Total=992 [2020-10-12 21:16:01,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-12 21:16:01,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 95. [2020-10-12 21:16:01,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-12 21:16:01,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 123 transitions. [2020-10-12 21:16:01,636 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 123 transitions. Word has length 66 [2020-10-12 21:16:01,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:16:01,637 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 123 transitions. [2020-10-12 21:16:01,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 21:16:01,637 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 123 transitions. [2020-10-12 21:16:01,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-12 21:16:01,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:16:01,639 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:16:01,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 21:16:01,640 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:16:01,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:16:01,640 INFO L82 PathProgramCache]: Analyzing trace with hash 428464878, now seen corresponding path program 1 times [2020-10-12 21:16:01,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:16:01,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1767186097] [2020-10-12 21:16:01,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:16:01,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:01,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:01,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:01,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:01,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:01,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:01,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:06,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:06,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 21:16:06,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 21:16:06,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 21:16:06,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:06,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 21:16:06,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 21:16:06,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 21:16:06,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:06,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:16:06,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:06,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:06,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:06,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:16:06,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:06,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:16:06,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:06,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:16:06,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:06,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:16:06,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:06,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 21:16:06,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:06,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:06,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:06,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:16:06,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:06,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 21:16:06,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:06,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:16:06,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:06,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:16:06,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:06,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-12 21:16:06,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:06,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:06,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:06,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 21:16:06,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:06,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-12 21:16:06,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:06,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 21:16:06,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:06,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 21:16:06,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:07,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 21:16:07,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:07,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:07,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:07,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:16:07,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:07,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 21:16:07,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:07,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 21:16:07,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:07,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:16:07,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:07,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-12 21:16:07,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:07,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:07,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:07,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:16:07,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:07,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:16:07,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:07,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:16:07,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:07,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 21:16:07,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:07,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 21:16:07,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:07,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:07,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:07,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:16:07,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:07,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:16:07,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:07,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:16:07,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:07,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 21:16:07,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:07,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-12 21:16:07,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:07,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:07,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:07,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 21:16:07,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:07,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 21:16:07,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:07,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:16:07,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 21:16:07,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 21:16:07,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:07,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 21:16:07,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:07,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:07,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:07,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 21:16:07,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:07,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 21:16:07,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:07,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:16:07,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:07,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:16:07,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:07,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 21:16:07,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:07,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:07,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:07,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 21:16:07,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:07,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 21:16:07,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:07,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:16:07,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:07,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:16:07,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:07,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-12 21:16:07,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:07,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:07,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:07,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:16:07,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:07,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:16:07,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:07,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:16:07,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 21:16:07,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:16:07,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:07,266 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-12 21:16:07,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1767186097] [2020-10-12 21:16:07,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:16:07,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 21:16:07,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792433933] [2020-10-12 21:16:07,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 21:16:07,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:16:07,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 21:16:07,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-12 21:16:07,268 INFO L87 Difference]: Start difference. First operand 95 states and 123 transitions. Second operand 14 states. [2020-10-12 21:16:08,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:16:08,490 INFO L93 Difference]: Finished difference Result 115 states and 146 transitions. [2020-10-12 21:16:08,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 21:16:08,491 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 67 [2020-10-12 21:16:08,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:16:08,493 INFO L225 Difference]: With dead ends: 115 [2020-10-12 21:16:08,493 INFO L226 Difference]: Without dead ends: 80 [2020-10-12 21:16:08,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=681, Unknown=0, NotChecked=0, Total=812 [2020-10-12 21:16:08,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-12 21:16:08,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-10-12 21:16:08,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-12 21:16:08,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 101 transitions. [2020-10-12 21:16:08,529 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 101 transitions. Word has length 67 [2020-10-12 21:16:08,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:16:08,530 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 101 transitions. [2020-10-12 21:16:08,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 21:16:08,532 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 101 transitions. [2020-10-12 21:16:08,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-12 21:16:08,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:16:08,534 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:16:08,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 21:16:08,534 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:16:08,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:16:08,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1661142112, now seen corresponding path program 3 times [2020-10-12 21:16:08,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:16:08,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1761963490] [2020-10-12 21:16:08,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:16:08,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:08,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:08,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:08,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:08,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:09,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:13,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:13,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 21:16:13,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 21:16:13,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 21:16:13,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:13,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 21:16:13,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:16:13,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 21:16:13,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:13,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:16:13,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:13,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:13,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:13,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:16:13,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:13,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:16:13,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:13,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:16:13,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:13,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:16:13,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:13,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 21:16:13,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:13,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:13,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:13,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:13,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:16:13,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 21:16:13,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 21:16:13,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:13,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:16:13,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:13,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:16:13,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:13,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-12 21:16:13,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:13,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:13,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:13,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 21:16:13,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:13,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-12 21:16:13,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:13,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 21:16:13,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:13,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 21:16:13,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:14,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-12 21:16:14,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:14,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:14,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:14,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:16:14,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:14,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:16:14,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:14,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 21:16:14,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:14,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:16:14,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:14,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 21:16:14,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:14,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:14,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:14,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:16:14,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:14,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:16:14,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:14,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:16:14,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:14,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 21:16:14,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:14,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-12 21:16:14,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:14,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:14,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:14,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:16:14,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:14,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:16:14,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:14,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:16:14,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:14,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 21:16:14,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:14,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 21:16:14,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:14,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:14,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:14,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 21:16:14,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:14,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 21:16:14,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:14,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:16:14,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 21:16:14,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:16:14,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:14,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-12 21:16:14,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:14,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:14,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:14,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-12 21:16:14,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:14,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 21:16:14,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:14,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:16:14,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-12 21:16:14,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:16:14,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:14,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 21:16:14,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:14,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:14,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:14,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:16:14,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:14,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:16:14,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:14,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:16:14,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:14,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:16:14,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:14,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 21:16:14,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:14,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:14,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:14,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:16:14,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:14,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:16:14,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:14,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:16:14,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:14,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:16:14,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:14,245 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-12 21:16:14,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1761963490] [2020-10-12 21:16:14,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:16:14,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 21:16:14,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893346052] [2020-10-12 21:16:14,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 21:16:14,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:16:14,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 21:16:14,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-12 21:16:14,247 INFO L87 Difference]: Start difference. First operand 80 states and 101 transitions. Second operand 17 states. [2020-10-12 21:16:21,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:16:21,964 INFO L93 Difference]: Finished difference Result 119 states and 153 transitions. [2020-10-12 21:16:21,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 21:16:21,965 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 67 [2020-10-12 21:16:21,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:16:21,967 INFO L225 Difference]: With dead ends: 119 [2020-10-12 21:16:21,967 INFO L226 Difference]: Without dead ends: 97 [2020-10-12 21:16:21,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=152, Invalid=970, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 21:16:21,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-12 21:16:21,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 81. [2020-10-12 21:16:21,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-12 21:16:21,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 103 transitions. [2020-10-12 21:16:21,986 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 103 transitions. Word has length 67 [2020-10-12 21:16:21,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:16:21,987 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 103 transitions. [2020-10-12 21:16:21,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 21:16:21,987 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 103 transitions. [2020-10-12 21:16:21,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 21:16:21,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:16:21,989 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:16:21,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 21:16:21,989 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:16:21,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:16:21,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1702418178, now seen corresponding path program 2 times [2020-10-12 21:16:21,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:16:21,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1387086979] [2020-10-12 21:16:21,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:16:22,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:22,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:22,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:22,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:22,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:25,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:25,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:26,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:26,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:27,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:27,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 21:16:27,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 21:16:27,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-12 21:16:27,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:27,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 21:16:27,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:16:27,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 21:16:27,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:27,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:16:27,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:27,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:27,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:27,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:16:27,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:27,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:16:27,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:27,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:16:27,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:27,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:16:27,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:27,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 21:16:27,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:27,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:27,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:27,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:27,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:16:27,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 21:16:27,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 21:16:27,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:27,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:16:27,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:27,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:16:27,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:27,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-12 21:16:27,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:27,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:27,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:27,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 21:16:27,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:27,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-12 21:16:27,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:27,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 21:16:27,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:27,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 21:16:27,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:29,553 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 18 [2020-10-12 21:16:31,676 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 18 [2020-10-12 21:16:31,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-12 21:16:31,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:31,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:31,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:31,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:16:31,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:31,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:16:31,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:31,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 21:16:31,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:31,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:16:31,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:31,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 21:16:31,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:31,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:31,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:31,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:16:31,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:31,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:16:31,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:31,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:16:31,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:31,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 21:16:31,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:31,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-12 21:16:31,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:31,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:31,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:31,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:16:31,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:31,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:16:31,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:31,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:16:31,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:31,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 21:16:31,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:31,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 21:16:31,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:31,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:31,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:31,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 21:16:31,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:31,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 21:16:31,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:31,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:16:31,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:31,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 21:16:31,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:31,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 21:16:31,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:31,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:31,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:31,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 21:16:31,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:31,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:16:31,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:31,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:16:31,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:31,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:16:31,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:31,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 21:16:31,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:31,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:31,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:31,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 21:16:31,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:31,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:16:31,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:31,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:16:31,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:31,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:16:31,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:31,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 21:16:31,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:31,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:31,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:31,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:16:31,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:31,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 21:16:31,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:31,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:16:31,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 21:16:31,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:16:31,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:31,969 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-12 21:16:31,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1387086979] [2020-10-12 21:16:31,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:16:31,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 21:16:31,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355196329] [2020-10-12 21:16:31,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 21:16:31,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:16:31,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 21:16:31,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-10-12 21:16:31,972 INFO L87 Difference]: Start difference. First operand 81 states and 103 transitions. Second operand 18 states. [2020-10-12 21:16:34,487 WARN L193 SmtUtils]: Spent 2.13 s on a formula simplification that was a NOOP. DAG size: 30 [2020-10-12 21:16:36,679 WARN L193 SmtUtils]: Spent 2.12 s on a formula simplification that was a NOOP. DAG size: 30 [2020-10-12 21:16:37,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:16:37,984 INFO L93 Difference]: Finished difference Result 115 states and 147 transitions. [2020-10-12 21:16:37,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 21:16:37,985 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 70 [2020-10-12 21:16:37,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:16:37,999 INFO L225 Difference]: With dead ends: 115 [2020-10-12 21:16:37,999 INFO L226 Difference]: Without dead ends: 103 [2020-10-12 21:16:38,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=143, Invalid=979, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 21:16:38,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-12 21:16:38,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 95. [2020-10-12 21:16:38,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-12 21:16:38,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 124 transitions. [2020-10-12 21:16:38,020 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 124 transitions. Word has length 70 [2020-10-12 21:16:38,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:16:38,021 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 124 transitions. [2020-10-12 21:16:38,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 21:16:38,021 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 124 transitions. [2020-10-12 21:16:38,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 21:16:38,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:16:38,023 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:16:38,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 21:16:38,023 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:16:38,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:16:38,024 INFO L82 PathProgramCache]: Analyzing trace with hash 841542398, now seen corresponding path program 3 times [2020-10-12 21:16:38,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:16:38,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594119987] [2020-10-12 21:16:38,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:16:38,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:38,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:38,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:38,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:38,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:38,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:38,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:43,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:43,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 21:16:43,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 21:16:43,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 21:16:43,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:43,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 21:16:43,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:16:43,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 21:16:43,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:43,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:16:43,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:43,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:43,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:43,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:16:43,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:43,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:16:43,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:43,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:16:43,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:43,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:16:43,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:43,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 21:16:43,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:43,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:43,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:43,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:43,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:16:43,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 21:16:43,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:16:43,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:43,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:16:43,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:43,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:16:43,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:43,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-12 21:16:43,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:43,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:43,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:43,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 21:16:43,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:43,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-12 21:16:43,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:43,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 21:16:43,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:43,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 21:16:43,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:43,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 21:16:43,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:43,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:43,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:43,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:16:43,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:43,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:16:43,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:43,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 21:16:43,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:43,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:16:43,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:43,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 21:16:43,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:43,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:43,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:43,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:16:43,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:43,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:16:43,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:43,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:16:43,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:43,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 21:16:43,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:43,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 21:16:43,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:43,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:43,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:43,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:16:43,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:43,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:16:43,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:43,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:16:43,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:43,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 21:16:43,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:43,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-12 21:16:43,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:43,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:43,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:43,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 21:16:43,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:43,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 21:16:43,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:43,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:16:43,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:43,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 21:16:43,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:43,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 21:16:43,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:43,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:43,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:43,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 21:16:43,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:43,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:16:43,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:43,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:16:43,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:43,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:16:43,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:43,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 21:16:43,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:43,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:43,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:43,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 21:16:43,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:43,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:16:43,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:43,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:16:43,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:43,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:16:43,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:43,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-12 21:16:43,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:43,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:43,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:43,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:16:43,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:43,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 21:16:43,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:43,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:16:43,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 21:16:43,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:16:43,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:43,516 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-12 21:16:43,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594119987] [2020-10-12 21:16:43,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:16:43,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 21:16:43,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869258691] [2020-10-12 21:16:43,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 21:16:43,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:16:43,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 21:16:43,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-12 21:16:43,519 INFO L87 Difference]: Start difference. First operand 95 states and 124 transitions. Second operand 16 states. [2020-10-12 21:16:46,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:16:46,839 INFO L93 Difference]: Finished difference Result 123 states and 159 transitions. [2020-10-12 21:16:46,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 21:16:46,842 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 68 [2020-10-12 21:16:46,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:16:46,843 INFO L225 Difference]: With dead ends: 123 [2020-10-12 21:16:46,844 INFO L226 Difference]: Without dead ends: 111 [2020-10-12 21:16:46,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=127, Invalid=743, Unknown=0, NotChecked=0, Total=870 [2020-10-12 21:16:46,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-12 21:16:46,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 108. [2020-10-12 21:16:46,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-12 21:16:46,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 142 transitions. [2020-10-12 21:16:46,862 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 142 transitions. Word has length 68 [2020-10-12 21:16:46,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:16:46,863 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 142 transitions. [2020-10-12 21:16:46,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 21:16:46,863 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 142 transitions. [2020-10-12 21:16:46,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-12 21:16:46,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:16:46,865 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:16:46,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 21:16:46,865 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:16:46,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:16:46,865 INFO L82 PathProgramCache]: Analyzing trace with hash -791322898, now seen corresponding path program 4 times [2020-10-12 21:16:46,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:16:46,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [653360184] [2020-10-12 21:16:46,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:16:46,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:46,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:46,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:46,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:47,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:51,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:51,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-12 21:16:51,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 21:16:51,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-12 21:16:51,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:51,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 21:16:51,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:16:51,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-12 21:16:51,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:52,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:16:52,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:52,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:52,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:52,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:16:52,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:52,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 21:16:52,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:52,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:16:52,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:52,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:16:52,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:52,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 21:16:52,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:52,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:52,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:52,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:52,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:16:52,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 21:16:52,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 21:16:52,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:52,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:16:52,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:52,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:16:52,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:52,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-12 21:16:52,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:52,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:52,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:52,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 21:16:52,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:52,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-12 21:16:52,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:52,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 21:16:52,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:52,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 21:16:52,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:54,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 21:16:54,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:54,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:54,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:54,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:16:54,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:54,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:16:54,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:54,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 21:16:54,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:54,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:16:54,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:54,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 21:16:54,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:54,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:54,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:54,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:16:54,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:54,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:16:54,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:54,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:16:54,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:54,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 21:16:54,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:54,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-12 21:16:54,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:54,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:54,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:54,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:16:54,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:54,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:16:54,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:54,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:16:54,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:54,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 21:16:54,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:54,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 21:16:54,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:54,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:54,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:54,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 21:16:54,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:54,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 21:16:54,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:54,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:16:54,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:54,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 21:16:54,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:54,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 21:16:54,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:54,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:54,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:54,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 21:16:54,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:54,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:16:54,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:54,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:16:54,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:54,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:16:54,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:54,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 21:16:54,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:54,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:54,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:54,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 21:16:54,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:54,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:16:54,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:54,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:16:54,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:54,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:16:54,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:54,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-12 21:16:54,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:54,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:54,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:54,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:16:54,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:54,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 21:16:54,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:54,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:16:54,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 21:16:54,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:16:54,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:54,861 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-12 21:16:54,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [653360184] [2020-10-12 21:16:54,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:16:54,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 21:16:54,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534380742] [2020-10-12 21:16:54,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 21:16:54,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:16:54,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 21:16:54,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=270, Unknown=1, NotChecked=0, Total=306 [2020-10-12 21:16:54,863 INFO L87 Difference]: Start difference. First operand 108 states and 142 transitions. Second operand 18 states. [2020-10-12 21:16:57,815 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-10-12 21:16:59,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:16:59,394 INFO L93 Difference]: Finished difference Result 139 states and 183 transitions. [2020-10-12 21:16:59,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 21:16:59,396 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 71 [2020-10-12 21:16:59,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:16:59,397 INFO L225 Difference]: With dead ends: 139 [2020-10-12 21:16:59,397 INFO L226 Difference]: Without dead ends: 127 [2020-10-12 21:16:59,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=184, Invalid=1221, Unknown=1, NotChecked=0, Total=1406 [2020-10-12 21:16:59,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-12 21:16:59,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 96. [2020-10-12 21:16:59,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-12 21:16:59,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 126 transitions. [2020-10-12 21:16:59,452 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 126 transitions. Word has length 71 [2020-10-12 21:16:59,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:16:59,453 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 126 transitions. [2020-10-12 21:16:59,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 21:16:59,453 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 126 transitions. [2020-10-12 21:16:59,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-12 21:16:59,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:16:59,459 INFO L422 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:16:59,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 21:16:59,460 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:16:59,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:16:59,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1682827006, now seen corresponding path program 5 times [2020-10-12 21:16:59,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:16:59,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493838903] [2020-10-12 21:16:59,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:16:59,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:59,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:59,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:59,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:59,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:17:04,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:17:04,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-12 21:17:04,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 21:17:04,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 21:17:04,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:17:04,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 21:17:04,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:17:04,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 21:17:04,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:17:04,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:17:04,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:17:04,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:17:04,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:17:04,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:17:04,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:17:04,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:17:04,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:17:04,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:17:04,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:17:04,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:17:04,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:17:04,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 21:17:04,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:17:04,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:17:04,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:17:04,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:17:04,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:17:04,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 21:17:04,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:17:04,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:17:04,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:17:04,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:17:04,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:17:04,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:17:04,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-12 21:17:04,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:17:04,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:17:04,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:17:04,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 21:17:04,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:17:04,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-10-12 21:17:04,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:17:04,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 21:17:04,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:17:04,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 21:17:04,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:17:08,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-12 21:17:08,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:17:08,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:17:08,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:17:08,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:17:08,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:17:08,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 21:17:08,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:17:08,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 21:17:08,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:17:08,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:17:08,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:17:08,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 21:17:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:17:08,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:17:08,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:17:08,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:17:08,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:17:08,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:17:08,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:17:08,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:17:08,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:17:08,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 21:17:08,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:17:08,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 21:17:08,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:17:08,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:17:08,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:17:08,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:17:08,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:17:08,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:17:08,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:17:08,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:17:08,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:17:08,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 21:17:08,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:17:08,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-12 21:17:08,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:17:08,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:17:08,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:17:08,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:17:08,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:17:08,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 21:17:08,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 21:17:08,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-12 21:17:08,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:17:08,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 21:17:08,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 21:17:08,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 21:17:08,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:17:08,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 21:17:08,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:17:08,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:17:08,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:17:08,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 21:17:08,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:17:08,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 21:17:08,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:17:08,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 21:17:08,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:17:08,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 21:17:08,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:17:09,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 21:17:09,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:17:09,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:17:09,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:17:09,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 21:17:09,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:17:09,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 21:17:09,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:17:09,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:17:09,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:17:09,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:17:09,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:17:09,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-12 21:17:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:17:09,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:17:09,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:17:09,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:17:09,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:17:09,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 21:17:09,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:17:09,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:17:09,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 21:17:09,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:17:09,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:17:09,133 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 31 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-12 21:17:09,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493838903] [2020-10-12 21:17:09,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:17:09,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-12 21:17:09,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136470552] [2020-10-12 21:17:09,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-12 21:17:09,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:17:09,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-12 21:17:09,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=549, Unknown=1, NotChecked=0, Total=600 [2020-10-12 21:17:09,137 INFO L87 Difference]: Start difference. First operand 96 states and 126 transitions. Second operand 25 states. [2020-10-12 21:18:42,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:18:42,922 INFO L93 Difference]: Finished difference Result 147 states and 200 transitions. [2020-10-12 21:18:42,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-12 21:18:42,924 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 72 [2020-10-12 21:18:42,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:18:42,926 INFO L225 Difference]: With dead ends: 147 [2020-10-12 21:18:42,926 INFO L226 Difference]: Without dead ends: 123 [2020-10-12 21:18:42,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=216, Invalid=2133, Unknown=3, NotChecked=0, Total=2352 [2020-10-12 21:18:42,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-12 21:18:42,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 114. [2020-10-12 21:18:42,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-12 21:18:42,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 157 transitions. [2020-10-12 21:18:42,952 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 157 transitions. Word has length 72 [2020-10-12 21:18:42,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:18:42,953 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 157 transitions. [2020-10-12 21:18:42,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-12 21:18:42,956 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 157 transitions. [2020-10-12 21:18:42,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-12 21:18:42,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:18:42,961 INFO L422 BasicCegarLoop]: trace histogram [7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:18:42,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 21:18:42,961 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:18:42,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:18:42,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1072062702, now seen corresponding path program 6 times [2020-10-12 21:18:42,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:18:42,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213425521] [2020-10-12 21:18:42,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:18:42,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:18:42,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:18:43,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:18:43,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:18:45,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:18:45,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:18:45,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:18:47,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:18:47,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 21:18:47,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 21:18:47,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-12 21:18:47,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:18:47,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 21:18:47,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:18:47,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 21:18:47,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:18:48,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:18:48,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:18:48,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:18:48,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:18:48,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:18:48,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:18:48,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:18:48,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:18:48,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:18:48,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:18:48,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:18:48,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:18:48,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 21:18:48,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:18:48,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:18:48,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:18:48,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:18:48,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:18:48,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 21:18:48,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 21:18:48,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:18:48,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:18:48,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:18:48,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:18:48,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:18:48,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-12 21:18:48,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:18:48,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:18:48,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:18:48,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 21:18:48,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:18:48,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 637 [2020-10-12 21:18:48,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:18:48,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 21:18:48,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:18:48,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 21:18:48,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:18:57,548 WARN L193 SmtUtils]: Spent 6.29 s on a formula simplification that was a NOOP. DAG size: 41 [2020-10-12 21:19:12,400 WARN L193 SmtUtils]: Spent 7.81 s on a formula simplification. DAG size of input: 74 DAG size of output: 41