/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/array-tiling/rewrev.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 18:30:34,741 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 18:30:34,744 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 18:30:34,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 18:30:34,786 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 18:30:34,794 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 18:30:34,796 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 18:30:34,799 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 18:30:34,802 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 18:30:34,806 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 18:30:34,807 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 18:30:34,808 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 18:30:34,808 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 18:30:34,811 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 18:30:34,813 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 18:30:34,815 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 18:30:34,816 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 18:30:34,818 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 18:30:34,821 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 18:30:34,829 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 18:30:34,831 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 18:30:34,832 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 18:30:34,833 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 18:30:34,834 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 18:30:34,846 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 18:30:34,846 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 18:30:34,846 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 18:30:34,850 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 18:30:34,851 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 18:30:34,852 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 18:30:34,852 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 18:30:34,853 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 18:30:34,853 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 18:30:34,854 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 18:30:34,855 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 18:30:34,855 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 18:30:34,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 18:30:34,856 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 18:30:34,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 18:30:34,857 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 18:30:34,858 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 18:30:34,858 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 [2020-10-14 18:30:34,881 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 18:30:34,881 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 18:30:34,882 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 18:30:34,883 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 18:30:34,883 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 18:30:34,883 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 18:30:34,883 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 18:30:34,883 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 18:30:34,884 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 18:30:34,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 18:30:34,884 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 18:30:34,884 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 18:30:34,884 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 18:30:34,884 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 18:30:34,885 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 18:30:34,885 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 18:30:34,885 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 18:30:34,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 18:30:34,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 18:30:34,886 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 18:30:34,886 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 18:30:34,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 18:30:34,886 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 18:30:34,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 18:30:34,887 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 18:30:34,887 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 18:30:34,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 18:30:34,887 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 18:30:34,887 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 18:30:34,888 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 18:30:35,206 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 18:30:35,224 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 18:30:35,230 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 18:30:35,232 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 18:30:35,232 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 18:30:35,233 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/rewrev.c [2020-10-14 18:30:35,295 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a6be16f1d/c08032b1031542719f7e59b67428c985/FLAG7dfe9ab63 [2020-10-14 18:30:35,746 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 18:30:35,747 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-tiling/rewrev.c [2020-10-14 18:30:35,754 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a6be16f1d/c08032b1031542719f7e59b67428c985/FLAG7dfe9ab63 [2020-10-14 18:30:36,138 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a6be16f1d/c08032b1031542719f7e59b67428c985 [2020-10-14 18:30:36,147 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 18:30:36,149 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 18:30:36,150 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 18:30:36,151 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 18:30:36,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 18:30:36,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:30:36" (1/1) ... [2020-10-14 18:30:36,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71e0f281 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:30:36, skipping insertion in model container [2020-10-14 18:30:36,163 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:30:36" (1/1) ... [2020-10-14 18:30:36,172 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 18:30:36,195 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 18:30:36,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:30:36,375 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 18:30:36,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:30:36,409 INFO L208 MainTranslator]: Completed translation [2020-10-14 18:30:36,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:30:36 WrapperNode [2020-10-14 18:30:36,410 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 18:30:36,411 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 18:30:36,411 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 18:30:36,411 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 18:30:36,507 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:30:36" (1/1) ... [2020-10-14 18:30:36,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:30:36" (1/1) ... [2020-10-14 18:30:36,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:30:36" (1/1) ... [2020-10-14 18:30:36,522 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:30:36" (1/1) ... [2020-10-14 18:30:36,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:30:36" (1/1) ... [2020-10-14 18:30:36,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:30:36" (1/1) ... [2020-10-14 18:30:36,549 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:30:36" (1/1) ... [2020-10-14 18:30:36,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 18:30:36,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 18:30:36,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 18:30:36,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 18:30:36,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:30:36" (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 [2020-10-14 18:30:36,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 18:30:36,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 18:30:36,615 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 18:30:36,615 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 18:30:36,615 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 18:30:36,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 18:30:36,615 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 18:30:36,615 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 18:30:36,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 18:30:36,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 18:30:36,616 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 18:30:36,616 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 18:30:36,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 18:30:36,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 18:30:36,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 18:30:36,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 18:30:36,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 18:30:36,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 18:30:36,914 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 18:30:36,914 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-14 18:30:36,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:30:36 BoogieIcfgContainer [2020-10-14 18:30:36,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 18:30:36,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 18:30:36,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 18:30:36,923 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 18:30:36,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 06:30:36" (1/3) ... [2020-10-14 18:30:36,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b26b801 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:30:36, skipping insertion in model container [2020-10-14 18:30:36,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:30:36" (2/3) ... [2020-10-14 18:30:36,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b26b801 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:30:36, skipping insertion in model container [2020-10-14 18:30:36,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:30:36" (3/3) ... [2020-10-14 18:30:36,927 INFO L109 eAbstractionObserver]: Analyzing ICFG rewrev.c [2020-10-14 18:30:36,938 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 18:30:36,945 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 18:30:36,959 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 18:30:36,985 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 18:30:36,985 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 18:30:36,985 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 18:30:36,985 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 18:30:36,985 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 18:30:36,986 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 18:30:36,986 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 18:30:36,986 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 18:30:37,005 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-10-14 18:30:37,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-14 18:30:37,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:37,013 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:30:37,014 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:37,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:37,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1564765221, now seen corresponding path program 1 times [2020-10-14 18:30:37,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:37,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172371787] [2020-10-14 18:30:37,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:37,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:37,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:37,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:37,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 18:30:37,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:37,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-14 18:30:37,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:37,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:37,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:37,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:30:37,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 18:30:37,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 18:30:37,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:30:37,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:37,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:37,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:37,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:30:37,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:37,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 18:30:37,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:37,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:37,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:37,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:37,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:37,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:37,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:30:37,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172371787] [2020-10-14 18:30:37,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:30:37,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 18:30:37,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468270709] [2020-10-14 18:30:37,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 18:30:37,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:30:37,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 18:30:37,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 18:30:37,528 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 4 states. [2020-10-14 18:30:37,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:30:37,646 INFO L93 Difference]: Finished difference Result 54 states and 69 transitions. [2020-10-14 18:30:37,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 18:30:37,648 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-14 18:30:37,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:30:37,657 INFO L225 Difference]: With dead ends: 54 [2020-10-14 18:30:37,658 INFO L226 Difference]: Without dead ends: 26 [2020-10-14 18:30:37,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 18:30:37,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-14 18:30:37,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-10-14 18:30:37,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-14 18:30:37,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-10-14 18:30:37,695 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 14 [2020-10-14 18:30:37,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:30:37,696 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-10-14 18:30:37,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 18:30:37,696 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-10-14 18:30:37,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 18:30:37,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:37,698 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:30:37,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 18:30:37,698 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:37,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:37,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1138009376, now seen corresponding path program 1 times [2020-10-14 18:30:37,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:37,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386130741] [2020-10-14 18:30:37,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:37,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:37,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:37,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:37,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:37,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 18:30:37,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:30:37,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-14 18:30:37,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:37,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:37,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 18:30:37,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:30:37,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:37,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 18:30:37,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:30:37,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:37,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:37,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:37,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:30:37,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:37,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 18:30:37,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:37,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:37,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:37,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:37,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:37,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:37,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:30:38,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1386130741] [2020-10-14 18:30:38,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:30:38,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 18:30:38,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125790844] [2020-10-14 18:30:38,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 18:30:38,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:30:38,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 18:30:38,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 18:30:38,012 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 5 states. [2020-10-14 18:30:38,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:30:38,125 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2020-10-14 18:30:38,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 18:30:38,126 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-14 18:30:38,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:30:38,127 INFO L225 Difference]: With dead ends: 38 [2020-10-14 18:30:38,127 INFO L226 Difference]: Without dead ends: 27 [2020-10-14 18:30:38,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 18:30:38,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-14 18:30:38,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-14 18:30:38,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-14 18:30:38,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-10-14 18:30:38,136 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 18 [2020-10-14 18:30:38,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:30:38,136 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-10-14 18:30:38,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 18:30:38,137 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-10-14 18:30:38,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 18:30:38,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:38,138 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:30:38,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 18:30:38,138 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:38,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:38,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1844234969, now seen corresponding path program 1 times [2020-10-14 18:30:38,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:38,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201118006] [2020-10-14 18:30:38,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:38,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:38,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:38,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:38,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:38,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:39,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:39,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 18:30:39,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 18:30:39,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 962 [2020-10-14 18:30:39,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:39,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:39,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 18:30:39,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:30:39,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 18:30:39,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:39,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:30:39,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:39,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:39,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:39,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:30:39,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:39,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:30:39,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:39,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:39,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:39,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:39,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:39,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 18:30:39,344 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 18:30:39,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201118006] [2020-10-14 18:30:39,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:30:39,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 18:30:39,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873742071] [2020-10-14 18:30:39,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 18:30:39,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:30:39,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 18:30:39,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-14 18:30:39,350 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 11 states. [2020-10-14 18:30:39,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:30:39,781 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2020-10-14 18:30:39,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 18:30:39,782 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2020-10-14 18:30:39,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:30:39,783 INFO L225 Difference]: With dead ends: 39 [2020-10-14 18:30:39,783 INFO L226 Difference]: Without dead ends: 37 [2020-10-14 18:30:39,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2020-10-14 18:30:39,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-14 18:30:39,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2020-10-14 18:30:39,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-14 18:30:39,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-10-14 18:30:39,805 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 22 [2020-10-14 18:30:39,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:30:39,805 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-10-14 18:30:39,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 18:30:39,806 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-10-14 18:30:39,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 18:30:39,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:39,807 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:30:39,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 18:30:39,808 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:39,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:39,808 INFO L82 PathProgramCache]: Analyzing trace with hash 2097899152, now seen corresponding path program 1 times [2020-10-14 18:30:39,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:39,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008795796] [2020-10-14 18:30:39,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:39,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:39,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:39,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:39,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:40,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:40,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:40,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:41,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:41,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 18:30:41,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 18:30:41,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2104 [2020-10-14 18:30:41,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:41,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:41,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 18:30:41,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:30:41,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 18:30:41,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:42,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:30:42,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:42,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:42,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:42,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:30:42,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:42,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:30:42,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:42,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:42,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:42,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:42,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:42,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 18:30:42,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 18:30:42,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:42,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:42,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:42,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:42,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:42,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 18:30:42,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:42,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:42,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:42,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:42,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:42,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:42,355 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:30:42,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008795796] [2020-10-14 18:30:42,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:30:42,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 18:30:42,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809192841] [2020-10-14 18:30:42,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 18:30:42,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:30:42,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 18:30:42,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-14 18:30:42,362 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 13 states. [2020-10-14 18:30:43,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:30:43,077 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2020-10-14 18:30:43,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 18:30:43,089 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 30 [2020-10-14 18:30:43,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:30:43,099 INFO L225 Difference]: With dead ends: 60 [2020-10-14 18:30:43,099 INFO L226 Difference]: Without dead ends: 58 [2020-10-14 18:30:43,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2020-10-14 18:30:43,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-14 18:30:43,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 51. [2020-10-14 18:30:43,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-14 18:30:43,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2020-10-14 18:30:43,131 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 30 [2020-10-14 18:30:43,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:30:43,131 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2020-10-14 18:30:43,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 18:30:43,131 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2020-10-14 18:30:43,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 18:30:43,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:43,135 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:30:43,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 18:30:43,135 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:43,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:43,136 INFO L82 PathProgramCache]: Analyzing trace with hash -2101851765, now seen corresponding path program 2 times [2020-10-14 18:30:43,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:43,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191644802] [2020-10-14 18:30:43,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:43,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:43,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:43,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:43,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:43,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:43,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:43,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:43,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:44,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:45,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:45,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 18:30:45,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 18:30:45,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2097 [2020-10-14 18:30:45,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:45,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:45,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 18:30:45,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:30:45,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 18:30:45,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:45,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:30:45,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:45,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:45,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:45,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:30:45,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:45,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:45,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:45,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:45,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:45,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:45,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:45,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:45,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 18:30:45,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:45,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:45,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:45,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:45,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:45,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:30:45,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:45,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:45,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:45,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:45,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:45,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:45,493 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 18:30:45,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1191644802] [2020-10-14 18:30:45,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:30:45,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 18:30:45,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218395081] [2020-10-14 18:30:45,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 18:30:45,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:30:45,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 18:30:45,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-14 18:30:45,495 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand 13 states. [2020-10-14 18:30:46,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:30:46,396 INFO L93 Difference]: Finished difference Result 65 states and 72 transitions. [2020-10-14 18:30:46,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 18:30:46,397 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-10-14 18:30:46,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:30:46,399 INFO L225 Difference]: With dead ends: 65 [2020-10-14 18:30:46,399 INFO L226 Difference]: Without dead ends: 63 [2020-10-14 18:30:46,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=142, Invalid=614, Unknown=0, NotChecked=0, Total=756 [2020-10-14 18:30:46,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-14 18:30:46,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 41. [2020-10-14 18:30:46,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 18:30:46,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2020-10-14 18:30:46,410 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 34 [2020-10-14 18:30:46,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:30:46,411 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2020-10-14 18:30:46,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 18:30:46,411 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2020-10-14 18:30:46,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 18:30:46,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:46,413 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:30:46,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 18:30:46,413 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:46,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:46,413 INFO L82 PathProgramCache]: Analyzing trace with hash -95790265, now seen corresponding path program 3 times [2020-10-14 18:30:46,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:46,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [724516569] [2020-10-14 18:30:46,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:46,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:46,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:46,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:46,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:46,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 18:30:46,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:30:46,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-14 18:30:46,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:46,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:46,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 18:30:46,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:30:46,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 18:30:46,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:46,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:30:46,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:46,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:46,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:46,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:30:46,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:46,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:46,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:46,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:46,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:46,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:46,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:46,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:46,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 18:30:46,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:46,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:46,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:46,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:46,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:46,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:30:46,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:46,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:46,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:46,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:46,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:46,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:46,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 18:30:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:46,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:46,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:46,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:46,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:46,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:30:46,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:46,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:46,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:46,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:46,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:46,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:46,769 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 18:30:46,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [724516569] [2020-10-14 18:30:46,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:30:46,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 18:30:46,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120817576] [2020-10-14 18:30:46,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 18:30:46,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:30:46,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 18:30:46,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-14 18:30:46,772 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 9 states. [2020-10-14 18:30:46,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:30:46,990 INFO L93 Difference]: Finished difference Result 82 states and 87 transitions. [2020-10-14 18:30:46,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 18:30:46,991 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-10-14 18:30:46,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:30:46,992 INFO L225 Difference]: With dead ends: 82 [2020-10-14 18:30:46,992 INFO L226 Difference]: Without dead ends: 47 [2020-10-14 18:30:46,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-14 18:30:46,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-14 18:30:47,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-10-14 18:30:47,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-14 18:30:47,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2020-10-14 18:30:47,001 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 38 [2020-10-14 18:30:47,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:30:47,002 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2020-10-14 18:30:47,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 18:30:47,002 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2020-10-14 18:30:47,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 18:30:47,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:47,003 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:30:47,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 18:30:47,003 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:47,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:47,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1561203522, now seen corresponding path program 4 times [2020-10-14 18:30:47,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:47,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [619317147] [2020-10-14 18:30:47,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:47,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:47,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:47,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:47,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:47,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:47,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:47,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:48,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:48,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 18:30:48,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 18:30:48,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1757 [2020-10-14 18:30:48,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:48,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:48,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 18:30:48,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:30:48,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 18:30:48,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:49,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:30:49,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:49,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:49,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:49,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:30:49,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:49,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:30:49,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:49,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:49,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:49,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:49,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:49,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:49,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 18:30:49,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:49,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:49,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:49,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:49,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:49,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 18:30:49,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:49,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:49,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:49,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:49,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:49,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:49,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 18:30:49,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:49,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:49,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:49,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:49,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:49,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 18:30:49,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:49,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:49,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:49,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:49,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:49,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:49,339 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 18:30:49,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [619317147] [2020-10-14 18:30:49,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:30:49,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 18:30:49,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297155316] [2020-10-14 18:30:49,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 18:30:49,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:30:49,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 18:30:49,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:30:49,342 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 16 states. [2020-10-14 18:30:50,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:30:50,210 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2020-10-14 18:30:50,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 18:30:50,210 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 42 [2020-10-14 18:30:50,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:30:50,212 INFO L225 Difference]: With dead ends: 74 [2020-10-14 18:30:50,212 INFO L226 Difference]: Without dead ends: 55 [2020-10-14 18:30:50,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2020-10-14 18:30:50,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-14 18:30:50,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2020-10-14 18:30:50,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-14 18:30:50,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-14 18:30:50,230 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 42 [2020-10-14 18:30:50,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:30:50,231 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-14 18:30:50,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 18:30:50,231 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-14 18:30:50,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 18:30:50,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:50,234 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:30:50,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 18:30:50,234 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:50,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:50,234 INFO L82 PathProgramCache]: Analyzing trace with hash -957393475, now seen corresponding path program 5 times [2020-10-14 18:30:50,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:50,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [923816989] [2020-10-14 18:30:50,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:50,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:50,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:50,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:50,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:50,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:50,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:51,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:52,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:52,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 18:30:52,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 18:30:52,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2126 [2020-10-14 18:30:52,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:52,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:52,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 18:30:52,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:30:52,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 18:30:52,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 18:30:52,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:30:52,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:52,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:52,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:52,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:30:52,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:52,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:52,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:52,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:52,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:52,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:52,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:52,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:52,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 18:30:52,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:52,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:52,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:52,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:52,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:52,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:30:52,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:52,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:52,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:52,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:52,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:52,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:52,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 18:30:52,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:52,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:52,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:52,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:52,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:52,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:30:52,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:52,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:52,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:52,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:52,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:52,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:52,720 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 11 proven. 26 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 18:30:52,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [923816989] [2020-10-14 18:30:52,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:30:52,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 18:30:52,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200216994] [2020-10-14 18:30:52,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 18:30:52,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:30:52,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 18:30:52,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:30:52,723 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 16 states. [2020-10-14 18:30:53,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:30:53,653 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2020-10-14 18:30:53,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 18:30:53,653 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 46 [2020-10-14 18:30:53,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:30:53,655 INFO L225 Difference]: With dead ends: 66 [2020-10-14 18:30:53,655 INFO L226 Difference]: Without dead ends: 64 [2020-10-14 18:30:53,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=162, Invalid=830, Unknown=0, NotChecked=0, Total=992 [2020-10-14 18:30:53,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-14 18:30:53,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2020-10-14 18:30:53,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-14 18:30:53,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-14 18:30:53,668 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 46 [2020-10-14 18:30:53,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:30:53,668 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-14 18:30:53,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 18:30:53,669 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-14 18:30:53,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 18:30:53,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:53,673 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:30:53,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 18:30:53,673 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:53,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:53,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1529426572, now seen corresponding path program 6 times [2020-10-14 18:30:53,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:53,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883394646] [2020-10-14 18:30:53,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:53,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:53,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:53,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:53,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:53,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:54,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:54,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:54,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:54,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:56,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:56,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 18:30:56,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 18:30:56,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2526 [2020-10-14 18:30:56,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:56,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:56,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 18:30:56,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:30:56,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 18:30:56,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:56,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:30:56,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:56,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:56,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:56,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:30:56,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:56,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:56,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:56,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:56,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:56,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:56,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:56,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:56,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 18:30:56,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:56,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:56,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:56,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:56,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:56,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:30:56,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:56,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:56,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:56,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:56,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:56,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:56,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 18:30:56,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:56,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:56,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:56,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:56,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:56,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 18:30:56,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:56,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:56,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:56,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:56,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:56,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:56,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 18:30:56,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:56,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:56,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:56,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:56,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:56,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:30:56,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:56,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:56,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:56,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:56,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:56,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:56,659 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 18 proven. 34 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 18:30:56,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883394646] [2020-10-14 18:30:56,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:30:56,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 18:30:56,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482973122] [2020-10-14 18:30:56,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 18:30:56,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:30:56,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 18:30:56,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:30:56,668 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 16 states. [2020-10-14 18:30:57,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:30:57,590 INFO L93 Difference]: Finished difference Result 101 states and 112 transitions. [2020-10-14 18:30:57,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 18:30:57,590 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 54 [2020-10-14 18:30:57,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:30:57,592 INFO L225 Difference]: With dead ends: 101 [2020-10-14 18:30:57,592 INFO L226 Difference]: Without dead ends: 78 [2020-10-14 18:30:57,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=161, Invalid=651, Unknown=0, NotChecked=0, Total=812 [2020-10-14 18:30:57,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-14 18:30:57,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 61. [2020-10-14 18:30:57,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-14 18:30:57,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-14 18:30:57,603 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 54 [2020-10-14 18:30:57,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:30:57,603 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-14 18:30:57,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 18:30:57,604 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-14 18:30:57,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 18:30:57,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:57,605 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:30:57,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 18:30:57,605 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:57,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:57,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1512493201, now seen corresponding path program 7 times [2020-10-14 18:30:57,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:57,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1969423603] [2020-10-14 18:30:57,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:57,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:57,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:57,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:57,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:57,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:58,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:59,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:59,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:59,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:00,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:00,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 18:31:00,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 18:31:00,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3000 [2020-10-14 18:31:00,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:00,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:00,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 18:31:00,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:31:00,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 18:31:00,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:00,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:31:00,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:00,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:00,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:00,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:31:00,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:00,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:00,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:00,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:00,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:00,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:00,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:00,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:00,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 18:31:00,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:00,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:00,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:00,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:00,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:00,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:00,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:00,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:00,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:00,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:00,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:00,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:00,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 18:31:00,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:00,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:00,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:00,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:00,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:00,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:00,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:00,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:00,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:00,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:00,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:00,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:00,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 18:31:00,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:00,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:00,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:00,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:00,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:00,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:00,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:00,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:00,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:00,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:00,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:00,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:01,010 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 6 proven. 60 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-14 18:31:01,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1969423603] [2020-10-14 18:31:01,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:31:01,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 18:31:01,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762146343] [2020-10-14 18:31:01,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 18:31:01,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:31:01,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 18:31:01,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:31:01,013 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 16 states. [2020-10-14 18:31:02,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:31:02,341 INFO L93 Difference]: Finished difference Result 80 states and 86 transitions. [2020-10-14 18:31:02,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 18:31:02,342 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 58 [2020-10-14 18:31:02,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:31:02,344 INFO L225 Difference]: With dead ends: 80 [2020-10-14 18:31:02,344 INFO L226 Difference]: Without dead ends: 78 [2020-10-14 18:31:02,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=240, Invalid=1166, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 18:31:02,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-14 18:31:02,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 69. [2020-10-14 18:31:02,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-14 18:31:02,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-14 18:31:02,354 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 58 [2020-10-14 18:31:02,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:31:02,355 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-14 18:31:02,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 18:31:02,355 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-14 18:31:02,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 18:31:02,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:31:02,356 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:31:02,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 18:31:02,356 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:31:02,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:31:02,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1536371418, now seen corresponding path program 8 times [2020-10-14 18:31:02,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:31:02,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902320060] [2020-10-14 18:31:02,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:31:02,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:02,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:02,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:02,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:02,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:02,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:03,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:03,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:03,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:05,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:05,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:07,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:07,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 18:31:07,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 18:31:07,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 18:31:07,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:07,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:07,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 18:31:07,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:31:07,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 18:31:07,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:07,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:31:07,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:07,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:07,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:07,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:31:07,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:07,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:07,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:07,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:07,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:07,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:07,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:07,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:07,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 18:31:07,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:07,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:07,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:07,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:07,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:07,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 18:31:07,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:07,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:07,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:07,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:07,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:07,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:07,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 18:31:07,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:07,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:07,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:07,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:07,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:07,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:07,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:07,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:07,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:07,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:07,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:07,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:07,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 18:31:07,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:07,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:07,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:07,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:07,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:07,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:07,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:07,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:07,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:07,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:07,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:07,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:07,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:31:07,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:07,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:07,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:07,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:07,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:07,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:07,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:07,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:07,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:07,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:07,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:07,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:07,814 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 8 proven. 77 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 18:31:07,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902320060] [2020-10-14 18:31:07,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:31:07,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 18:31:07,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76014090] [2020-10-14 18:31:07,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 18:31:07,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:31:07,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 18:31:07,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:31:07,817 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 16 states. [2020-10-14 18:31:09,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:31:09,619 INFO L93 Difference]: Finished difference Result 96 states and 104 transitions. [2020-10-14 18:31:09,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 18:31:09,619 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 66 [2020-10-14 18:31:09,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:31:09,621 INFO L225 Difference]: With dead ends: 96 [2020-10-14 18:31:09,622 INFO L226 Difference]: Without dead ends: 94 [2020-10-14 18:31:09,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 13 SyntacticMatches, 7 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=304, Invalid=1418, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 18:31:09,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-14 18:31:09,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 77. [2020-10-14 18:31:09,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-14 18:31:09,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-14 18:31:09,644 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 66 [2020-10-14 18:31:09,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:31:09,644 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-14 18:31:09,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 18:31:09,645 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-14 18:31:09,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 18:31:09,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:31:09,646 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:31:09,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 18:31:09,646 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:31:09,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:31:09,647 INFO L82 PathProgramCache]: Analyzing trace with hash 2021053405, now seen corresponding path program 9 times [2020-10-14 18:31:09,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:31:09,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706057268] [2020-10-14 18:31:09,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:31:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:09,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:09,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:10,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:10,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 18:31:10,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:31:10,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 476 [2020-10-14 18:31:10,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:10,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:10,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 18:31:10,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:31:10,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 18:31:10,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:10,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:31:10,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:10,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:10,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:10,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:31:10,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:10,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:10,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:10,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:10,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:10,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:10,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:10,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:10,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 18:31:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:10,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:10,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:10,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:10,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:10,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:10,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:10,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:10,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:10,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:10,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:10,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:10,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 18:31:10,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:10,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:10,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:10,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:10,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:10,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:10,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:10,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:10,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:10,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:10,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:10,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:10,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 18:31:10,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:10,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:10,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:10,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:10,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:10,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:10,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:10,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:10,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:10,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:10,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:10,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:10,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:31:10,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:10,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:10,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:10,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:10,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:10,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:10,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:10,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:10,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:10,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:10,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:10,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:10,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 18:31:10,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:10,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:10,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:10,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:10,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:10,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:10,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:10,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:10,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:10,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:10,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:10,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:10,272 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 43 proven. 62 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-14 18:31:10,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706057268] [2020-10-14 18:31:10,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:31:10,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 18:31:10,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030348916] [2020-10-14 18:31:10,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 18:31:10,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:31:10,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 18:31:10,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-14 18:31:10,274 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 12 states. [2020-10-14 18:31:10,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:31:10,626 INFO L93 Difference]: Finished difference Result 157 states and 167 transitions. [2020-10-14 18:31:10,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 18:31:10,627 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 74 [2020-10-14 18:31:10,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:31:10,628 INFO L225 Difference]: With dead ends: 157 [2020-10-14 18:31:10,628 INFO L226 Difference]: Without dead ends: 83 [2020-10-14 18:31:10,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=259, Unknown=0, NotChecked=0, Total=380 [2020-10-14 18:31:10,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-14 18:31:10,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2020-10-14 18:31:10,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-14 18:31:10,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2020-10-14 18:31:10,641 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 74 [2020-10-14 18:31:10,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:31:10,641 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2020-10-14 18:31:10,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 18:31:10,641 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2020-10-14 18:31:10,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-14 18:31:10,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:31:10,643 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:31:10,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 18:31:10,643 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:31:10,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:31:10,643 INFO L82 PathProgramCache]: Analyzing trace with hash 863464024, now seen corresponding path program 10 times [2020-10-14 18:31:10,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:31:10,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601914096] [2020-10-14 18:31:10,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:31:10,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:10,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:10,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:11,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:11,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:11,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:12,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:12,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:12,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:12,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:13,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:14,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:14,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:15,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:15,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 18:31:15,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 18:31:15,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 18:31:15,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:15,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:15,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 18:31:15,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:31:15,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 18:31:15,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:16,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:31:16,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:16,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:16,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:16,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:31:16,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:16,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:16,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:16,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:16,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:16,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:16,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:16,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:16,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 18:31:16,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:16,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:16,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:16,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:16,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:16,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:16,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:16,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:16,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:16,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:16,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:16,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:16,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 18:31:16,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:16,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:16,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:16,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:16,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:16,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:16,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:16,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:16,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:16,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:16,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:16,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:16,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:31:16,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:16,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:16,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:16,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:16,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:16,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:16,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:16,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:16,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:16,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:16,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:16,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:16,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 18:31:16,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:16,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:16,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:16,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:16,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:16,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:16,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:16,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:16,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:16,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:16,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:16,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:16,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:31:16,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:16,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:16,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:16,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:16,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:16,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:16,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:16,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:16,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:16,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:16,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:16,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:16,312 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 34 proven. 92 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-14 18:31:16,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601914096] [2020-10-14 18:31:16,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:31:16,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 18:31:16,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606831453] [2020-10-14 18:31:16,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 18:31:16,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:31:16,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 18:31:16,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2020-10-14 18:31:16,314 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand 19 states. [2020-10-14 18:31:17,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:31:17,516 INFO L93 Difference]: Finished difference Result 122 states and 132 transitions. [2020-10-14 18:31:17,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 18:31:17,517 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 78 [2020-10-14 18:31:17,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:31:17,518 INFO L225 Difference]: With dead ends: 122 [2020-10-14 18:31:17,518 INFO L226 Difference]: Without dead ends: 91 [2020-10-14 18:31:17,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 15 SyntacticMatches, 9 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=202, Invalid=790, Unknown=0, NotChecked=0, Total=992 [2020-10-14 18:31:17,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-14 18:31:17,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2020-10-14 18:31:17,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-14 18:31:17,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-10-14 18:31:17,530 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 78 [2020-10-14 18:31:17,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:31:17,530 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-10-14 18:31:17,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 18:31:17,531 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-10-14 18:31:17,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-14 18:31:17,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:31:17,532 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:31:17,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 18:31:17,532 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:31:17,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:31:17,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1224586413, now seen corresponding path program 11 times [2020-10-14 18:31:17,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:31:17,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178715643] [2020-10-14 18:31:17,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:31:17,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:17,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:17,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:17,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:17,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:17,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:18,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:19,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:22,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:22,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 18:31:22,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 18:31:22,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 18:31:22,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:22,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:22,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 18:31:22,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:31:22,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 18:31:22,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:23,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:31:23,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:23,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:23,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:23,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:31:23,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:23,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:23,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:23,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:23,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:23,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:23,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:23,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:23,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 18:31:23,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:23,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:23,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:23,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:23,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:23,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:23,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:23,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:23,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:23,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:23,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:23,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:23,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 18:31:23,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:23,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:23,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:23,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:23,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:23,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:23,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:23,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:23,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:23,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:23,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:23,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:23,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:31:23,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:23,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:23,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:23,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:23,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:23,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:23,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:23,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:23,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:23,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:23,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:23,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:23,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 18:31:23,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:23,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:23,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:23,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:23,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:23,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:23,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:23,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:23,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:23,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:23,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:23,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:23,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 18:31:23,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:23,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:23,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:23,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:23,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:23,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:23,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:23,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:23,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:23,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:23,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:23,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:23,182 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 10 proven. 138 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-10-14 18:31:23,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178715643] [2020-10-14 18:31:23,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:31:23,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 18:31:23,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140141229] [2020-10-14 18:31:23,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 18:31:23,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:31:23,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 18:31:23,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-10-14 18:31:23,184 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 17 states. [2020-10-14 18:31:25,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:31:25,291 INFO L93 Difference]: Finished difference Result 102 states and 107 transitions. [2020-10-14 18:31:25,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-14 18:31:25,291 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 82 [2020-10-14 18:31:25,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:31:25,293 INFO L225 Difference]: With dead ends: 102 [2020-10-14 18:31:25,293 INFO L226 Difference]: Without dead ends: 100 [2020-10-14 18:31:25,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 15 SyntacticMatches, 10 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=352, Invalid=1628, Unknown=0, NotChecked=0, Total=1980 [2020-10-14 18:31:25,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-14 18:31:25,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 97. [2020-10-14 18:31:25,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-14 18:31:25,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2020-10-14 18:31:25,305 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 82 [2020-10-14 18:31:25,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:31:25,305 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2020-10-14 18:31:25,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 18:31:25,305 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2020-10-14 18:31:25,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-14 18:31:25,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:31:25,306 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:31:25,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 18:31:25,307 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:31:25,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:31:25,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1052914422, now seen corresponding path program 12 times [2020-10-14 18:31:25,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:31:25,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011275359] [2020-10-14 18:31:25,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:31:25,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:25,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:25,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:25,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:25,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:25,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:26,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:28,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:28,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:29,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:30,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:30,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 18:31:30,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 18:31:30,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 18:31:30,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:30,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:30,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 18:31:30,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:31:30,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 18:31:30,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:31,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:31:31,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:31,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:31,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:31,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:31:31,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:31,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:31,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:31,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:31,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:31,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:31,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:31,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:31,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 18:31:31,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:31,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:31,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:31,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:31,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:31,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:31,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:31,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:31,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:31,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:31,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:31,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:31,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 18:31:31,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:31,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:31,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:31,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:31,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:31,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:31,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:31,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:31,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:31,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:31,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:31,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:31,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:31:31,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:31,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:31,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:31,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:31,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:31,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:31,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:31,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:31,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:31,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:31,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:31,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:31,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 18:31:31,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:31,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:31,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:31,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:31,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:31,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:31:31,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:31,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:31,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:31,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:31,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:31,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:31,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 18:31:31,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:31,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:31,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:31,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:31,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:31,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:31,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:31,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:31,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:31,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:31,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:31,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:31,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 18:31:31,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:31,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:31,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:31,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:31,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:31,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:31,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:31,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:31,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:31,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:31,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:31,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:31,237 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 72 proven. 103 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-14 18:31:31,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011275359] [2020-10-14 18:31:31,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:31:31,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 18:31:31,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974346153] [2020-10-14 18:31:31,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 18:31:31,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:31:31,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 18:31:31,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2020-10-14 18:31:31,240 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand 18 states. [2020-10-14 18:31:32,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:31:32,693 INFO L93 Difference]: Finished difference Result 149 states and 163 transitions. [2020-10-14 18:31:32,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 18:31:32,695 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 90 [2020-10-14 18:31:32,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:31:32,696 INFO L225 Difference]: With dead ends: 149 [2020-10-14 18:31:32,696 INFO L226 Difference]: Without dead ends: 114 [2020-10-14 18:31:32,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 16 SyntacticMatches, 15 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=211, Invalid=781, Unknown=0, NotChecked=0, Total=992 [2020-10-14 18:31:32,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-14 18:31:32,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 97. [2020-10-14 18:31:32,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-14 18:31:32,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2020-10-14 18:31:32,707 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 90 [2020-10-14 18:31:32,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:31:32,707 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2020-10-14 18:31:32,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 18:31:32,707 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2020-10-14 18:31:32,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-14 18:31:32,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:31:32,708 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:31:32,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 18:31:32,708 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:31:32,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:31:32,709 INFO L82 PathProgramCache]: Analyzing trace with hash -974123643, now seen corresponding path program 13 times [2020-10-14 18:31:32,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:31:32,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [259078254] [2020-10-14 18:31:32,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:31:32,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:32,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:32,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:32,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:33,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:33,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:34,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:34,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:34,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:35,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:37,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:37,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 18:31:37,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 18:31:37,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 18:31:37,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:37,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:37,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 18:31:37,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:31:37,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 18:31:37,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:38,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:31:38,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:38,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:38,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:38,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:31:38,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:38,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:38,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:38,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:38,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:38,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:38,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:38,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:38,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 18:31:38,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:38,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:38,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:38,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:38,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:38,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:38,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:38,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:38,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:38,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:38,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:38,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:38,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:31:38,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:38,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:38,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:38,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:38,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:38,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:38,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:38,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:38,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:38,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:38,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:38,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:38,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 18:31:38,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:38,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:38,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:38,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:38,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:38,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:38,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:38,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:38,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:38,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:38,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:38,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:38,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:31:38,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:38,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:38,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:38,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:38,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:38,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:38,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:38,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:38,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:38,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:38,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:38,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:38,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 18:31:38,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:38,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:38,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:38,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:38,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:38,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:38,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:38,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:38,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:38,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:38,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:38,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:38,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 18:31:38,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:38,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:38,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:38,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:38,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:38,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:38,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:38,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:38,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:38,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:38,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:38,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:38,598 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 12 proven. 189 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-14 18:31:38,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [259078254] [2020-10-14 18:31:38,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:31:38,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 18:31:38,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284679432] [2020-10-14 18:31:38,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 18:31:38,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:31:38,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 18:31:38,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2020-10-14 18:31:38,607 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand 18 states. [2020-10-14 18:31:41,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:31:41,350 INFO L93 Difference]: Finished difference Result 116 states and 122 transitions. [2020-10-14 18:31:41,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-14 18:31:41,350 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 94 [2020-10-14 18:31:41,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:31:41,352 INFO L225 Difference]: With dead ends: 116 [2020-10-14 18:31:41,352 INFO L226 Difference]: Without dead ends: 114 [2020-10-14 18:31:41,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 17 SyntacticMatches, 13 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=449, Invalid=2101, Unknown=0, NotChecked=0, Total=2550 [2020-10-14 18:31:41,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-14 18:31:41,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 105. [2020-10-14 18:31:41,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-14 18:31:41,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2020-10-14 18:31:41,364 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 94 [2020-10-14 18:31:41,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:31:41,365 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2020-10-14 18:31:41,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 18:31:41,365 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2020-10-14 18:31:41,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 18:31:41,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:31:41,366 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:31:41,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 18:31:41,366 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:31:41,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:31:41,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1688681788, now seen corresponding path program 14 times [2020-10-14 18:31:41,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:31:41,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024785366] [2020-10-14 18:31:41,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:31:41,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:41,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:41,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:41,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:41,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:41,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:41,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:43,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:43,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:46,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:46,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 18:31:46,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 18:31:46,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 18:31:46,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:46,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:46,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-14 18:31:46,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:31:46,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 18:31:46,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:47,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:31:47,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:47,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:47,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:47,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:31:47,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:47,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:47,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:47,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:47,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:47,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:47,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:47,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:47,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 18:31:47,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:47,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:47,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:47,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:47,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:47,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 18:31:47,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:47,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:47,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:47,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:47,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:47,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 18:31:47,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:31:47,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:47,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:47,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:47,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:47,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:47,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:47,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:47,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:47,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:47,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:47,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:47,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:47,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 18:31:47,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:47,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:47,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:47,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:47,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:47,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:47,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:47,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:47,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:47,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:47,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:47,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:47,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:31:47,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:47,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:47,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:47,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:47,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:47,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:47,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:47,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:47,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:47,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:47,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:47,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:47,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 18:31:47,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:47,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:47,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:47,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:47,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:47,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:47,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:47,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:47,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:47,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:47,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:47,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:47,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 18:31:47,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:47,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:47,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:47,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:47,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:47,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:47,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:47,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:47,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:47,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:47,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:47,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:47,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 18:31:47,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:47,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:47,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:47,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:47,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:47,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:47,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:47,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:47,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:47,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:47,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:47,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:47,290 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 14 proven. 218 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-14 18:31:47,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2024785366] [2020-10-14 18:31:47,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:31:47,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 18:31:47,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039189902] [2020-10-14 18:31:47,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 18:31:47,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:31:47,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 18:31:47,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2020-10-14 18:31:47,297 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand 19 states. [2020-10-14 18:31:51,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:31:51,085 INFO L93 Difference]: Finished difference Result 132 states and 140 transitions. [2020-10-14 18:31:51,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-14 18:31:51,088 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 102 [2020-10-14 18:31:51,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:31:51,090 INFO L225 Difference]: With dead ends: 132 [2020-10-14 18:31:51,090 INFO L226 Difference]: Without dead ends: 130 [2020-10-14 18:31:51,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 19 SyntacticMatches, 16 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=564, Invalid=2742, Unknown=0, NotChecked=0, Total=3306 [2020-10-14 18:31:51,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-14 18:31:51,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 113. [2020-10-14 18:31:51,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-14 18:31:51,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 117 transitions. [2020-10-14 18:31:51,106 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 117 transitions. Word has length 102 [2020-10-14 18:31:51,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:31:51,107 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 117 transitions. [2020-10-14 18:31:51,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 18:31:51,107 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 117 transitions. [2020-10-14 18:31:51,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-14 18:31:51,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:31:51,108 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:31:51,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 18:31:51,109 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:31:51,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:31:51,109 INFO L82 PathProgramCache]: Analyzing trace with hash -374684173, now seen corresponding path program 15 times [2020-10-14 18:31:51,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:31:51,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576818505] [2020-10-14 18:31:51,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:31:51,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:51,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:51,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:51,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:51,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 18:31:51,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:31:51,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 860 [2020-10-14 18:31:51,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:51,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:51,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 18:31:51,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:31:51,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 18:31:51,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:52,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:31:52,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:52,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:52,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:52,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:31:52,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:52,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:52,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:52,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:52,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:52,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:52,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:52,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:52,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 18:31:52,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:52,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:52,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:52,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:52,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:52,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:52,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:52,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:52,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:52,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:52,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:52,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:52,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:31:52,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:52,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:52,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:52,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:52,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:52,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:52,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:52,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:52,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:52,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:52,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:52,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:52,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 18:31:52,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:52,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:52,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:52,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:52,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:52,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:52,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:52,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:52,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:52,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:52,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:52,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:52,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:31:52,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:52,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:52,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:52,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:52,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:52,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:52,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:52,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:52,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:52,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:52,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:52,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:52,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 18:31:52,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:52,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:52,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:52,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:52,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:52,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:52,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:52,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:52,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:52,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:52,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:52,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:52,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 18:31:52,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:52,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:52,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:52,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:52,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:52,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:52,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:52,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:52,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:52,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:52,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:52,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:52,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 18:31:52,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:52,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:52,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:52,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:52,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:52,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:52,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:52,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:52,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:52,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:52,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:52,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:52,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 18:31:52,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:52,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:52,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:52,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:52,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:52,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:52,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:52,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:52,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:52,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:52,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:52,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:52,144 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 144 proven. 120 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-14 18:31:52,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576818505] [2020-10-14 18:31:52,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:31:52,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 18:31:52,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709004448] [2020-10-14 18:31:52,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 18:31:52,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:31:52,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 18:31:52,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-10-14 18:31:52,146 INFO L87 Difference]: Start difference. First operand 113 states and 117 transitions. Second operand 14 states. [2020-10-14 18:31:52,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:31:52,619 INFO L93 Difference]: Finished difference Result 217 states and 227 transitions. [2020-10-14 18:31:52,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 18:31:52,620 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 110 [2020-10-14 18:31:52,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:31:52,622 INFO L225 Difference]: With dead ends: 217 [2020-10-14 18:31:52,622 INFO L226 Difference]: Without dead ends: 119 [2020-10-14 18:31:52,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=204, Invalid=396, Unknown=0, NotChecked=0, Total=600 [2020-10-14 18:31:52,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-14 18:31:52,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 117. [2020-10-14 18:31:52,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-14 18:31:52,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 119 transitions. [2020-10-14 18:31:52,634 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 119 transitions. Word has length 110 [2020-10-14 18:31:52,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:31:52,634 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 119 transitions. [2020-10-14 18:31:52,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 18:31:52,635 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 119 transitions. [2020-10-14 18:31:52,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-14 18:31:52,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:31:52,636 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:31:52,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 18:31:52,636 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:31:52,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:31:52,637 INFO L82 PathProgramCache]: Analyzing trace with hash -331678994, now seen corresponding path program 16 times [2020-10-14 18:31:52,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:31:52,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [627713598] [2020-10-14 18:31:52,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:31:52,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:52,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:52,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:52,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:53,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:53,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:54,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:57,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:57,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 18:31:57,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 18:31:57,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 18:31:57,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:57,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:57,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-14 18:31:57,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:31:57,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 18:31:57,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:58,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:31:58,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:58,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:58,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:58,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:31:58,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:58,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:58,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:58,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:58,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:58,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:58,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:58,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:58,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 18:31:58,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:58,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:58,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:58,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:58,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:58,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:58,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:58,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:58,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:58,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:58,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:58,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:58,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:31:58,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:58,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:58,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:58,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:58,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:58,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:58,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:58,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:58,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:58,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:58,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:58,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:58,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 18:31:58,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:58,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:58,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:58,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:58,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:58,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:58,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:58,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:58,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:58,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:58,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:58,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:58,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 18:31:58,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:58,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:58,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:58,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:58,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:58,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:58,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:58,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:58,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:58,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:58,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:58,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:58,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 18:31:58,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:58,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:58,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:58,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:58,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:58,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:58,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:58,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:58,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:58,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:58,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:58,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:58,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 18:31:58,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:58,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:58,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:58,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:58,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:58,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:58,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:58,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:58,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:58,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:58,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:58,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:58,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 18:31:58,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:58,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:58,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:58,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:58,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:58,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:58,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:58,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:58,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:58,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:58,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:58,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:58,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 18:31:58,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:58,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:58,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:58,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:58,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:58,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:58,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:58,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:58,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:58,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:58,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:58,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:58,811 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 37 proven. 260 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-14 18:31:58,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [627713598] [2020-10-14 18:31:58,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:31:58,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 18:31:58,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997288464] [2020-10-14 18:31:58,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 18:31:58,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:31:58,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 18:31:58,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=685, Unknown=0, NotChecked=0, Total=756 [2020-10-14 18:31:58,816 INFO L87 Difference]: Start difference. First operand 117 states and 119 transitions. Second operand 28 states. [2020-10-14 18:32:03,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:32:03,136 INFO L93 Difference]: Finished difference Result 130 states and 133 transitions. [2020-10-14 18:32:03,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-14 18:32:03,137 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 114 [2020-10-14 18:32:03,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:32:03,139 INFO L225 Difference]: With dead ends: 130 [2020-10-14 18:32:03,139 INFO L226 Difference]: Without dead ends: 128 [2020-10-14 18:32:03,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 19 SyntacticMatches, 13 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=738, Invalid=3818, Unknown=0, NotChecked=0, Total=4556 [2020-10-14 18:32:03,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-14 18:32:03,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 125. [2020-10-14 18:32:03,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-14 18:32:03,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 127 transitions. [2020-10-14 18:32:03,152 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 127 transitions. Word has length 114 [2020-10-14 18:32:03,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:32:03,152 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 127 transitions. [2020-10-14 18:32:03,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 18:32:03,153 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 127 transitions. [2020-10-14 18:32:03,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-14 18:32:03,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:32:03,154 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:32:03,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 18:32:03,155 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:32:03,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:32:03,155 INFO L82 PathProgramCache]: Analyzing trace with hash -876170843, now seen corresponding path program 17 times [2020-10-14 18:32:03,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:32:03,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [476610851] [2020-10-14 18:32:03,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:32:03,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:03,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:03,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:04,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:04,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 18:32:04,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:32:04,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1017 [2020-10-14 18:32:04,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:04,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:04,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 18:32:04,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:32:04,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 18:32:04,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:04,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:32:04,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:04,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:04,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:04,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:32:04,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:04,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:04,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:04,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:04,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:32:04,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:04,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:32:04,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:04,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 18:32:04,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:04,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:04,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:04,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:04,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:04,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:04,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:04,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:04,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:04,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:04,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:04,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:04,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:32:04,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:04,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:04,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:04,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:04,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:04,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:04,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:04,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:04,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:04,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:04,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:04,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:04,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 18:32:04,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:04,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:04,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:04,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:04,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:04,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:04,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:04,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:04,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:04,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:04,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:04,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:04,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 18:32:04,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:04,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:04,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:04,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:04,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:04,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:04,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:04,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:04,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:04,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:04,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:04,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:32:04,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 18:32:04,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:04,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:04,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:04,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:04,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:04,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:04,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:04,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:04,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:04,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:04,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:04,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:04,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 18:32:04,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:04,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:04,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:04,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:04,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:04,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:04,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:04,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:04,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:04,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:04,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:04,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:04,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 18:32:04,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:04,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:04,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:04,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:04,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:04,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:04,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:04,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:04,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:04,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:04,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:04,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:04,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 18:32:04,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:04,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:04,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:04,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:04,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:04,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:04,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:04,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:04,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:04,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:04,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:04,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:04,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-14 18:32:04,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:04,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:04,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:04,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:04,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:04,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:04,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:04,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:04,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:04,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:04,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:04,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:04,374 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 180 proven. 153 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-14 18:32:04,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [476610851] [2020-10-14 18:32:04,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:32:04,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 18:32:04,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435583155] [2020-10-14 18:32:04,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 18:32:04,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:32:04,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 18:32:04,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2020-10-14 18:32:04,377 INFO L87 Difference]: Start difference. First operand 125 states and 127 transitions. Second operand 15 states. [2020-10-14 18:32:05,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:32:05,046 INFO L93 Difference]: Finished difference Result 222 states and 227 transitions. [2020-10-14 18:32:05,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 18:32:05,046 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 122 [2020-10-14 18:32:05,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:32:05,049 INFO L225 Difference]: With dead ends: 222 [2020-10-14 18:32:05,049 INFO L226 Difference]: Without dead ends: 131 [2020-10-14 18:32:05,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=240, Invalid=462, Unknown=0, NotChecked=0, Total=702 [2020-10-14 18:32:05,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-14 18:32:05,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 129. [2020-10-14 18:32:05,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-14 18:32:05,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 131 transitions. [2020-10-14 18:32:05,061 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 131 transitions. Word has length 122 [2020-10-14 18:32:05,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:32:05,061 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 131 transitions. [2020-10-14 18:32:05,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 18:32:05,062 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 131 transitions. [2020-10-14 18:32:05,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-14 18:32:05,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:32:05,063 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:32:05,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 18:32:05,063 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:32:05,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:32:05,064 INFO L82 PathProgramCache]: Analyzing trace with hash -299874784, now seen corresponding path program 18 times [2020-10-14 18:32:05,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:32:05,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719163667] [2020-10-14 18:32:05,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:32:05,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:05,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:05,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:05,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:05,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:05,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:05,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:06,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:08,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:08,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:09,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:10,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:10,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-14 18:32:10,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 18:32:10,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 18:32:10,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:10,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:10,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-10-14 18:32:10,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:32:10,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-14 18:32:10,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:11,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:32:11,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:11,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:11,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:11,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:32:11,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:11,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:11,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:11,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:11,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:32:11,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:11,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:32:11,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:32:11,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:32:11,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:11,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:11,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:11,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:11,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:11,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:32:11,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:11,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:11,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:11,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:11,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:11,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:11,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 18:32:11,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:11,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:11,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:11,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:11,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:11,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:32:11,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:11,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:11,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:11,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:11,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:11,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:11,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:32:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:11,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:11,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:11,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:11,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:11,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:32:11,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:11,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:11,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:11,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:11,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:11,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:11,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 18:32:11,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:11,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:11,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:11,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:11,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:11,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 18:32:11,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:11,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:11,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:11,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:11,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:11,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:32:11,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 18:32:11,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:11,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:11,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:11,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:11,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:11,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:32:11,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:11,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:11,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:11,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:11,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:11,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:32:11,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 18:32:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:11,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:11,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:11,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:11,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:11,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:32:11,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:11,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:11,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:11,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:11,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:11,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:11,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 18:32:11,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:11,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:11,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:11,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:11,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:11,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:32:11,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:11,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:11,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:11,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:11,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:11,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:11,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-14 18:32:11,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:11,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:11,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:11,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:11,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:11,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:32:11,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:11,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:11,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:11,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:11,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:11,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:32:11,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-14 18:32:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:11,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:11,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:11,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:11,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:11,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 18:32:11,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:11,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:11,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:11,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:11,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:11,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 18:32:11,604 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 130 proven. 240 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-14 18:32:11,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719163667] [2020-10-14 18:32:11,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:32:11,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 18:32:11,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915652324] [2020-10-14 18:32:11,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 18:32:11,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:32:11,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 18:32:11,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2020-10-14 18:32:11,607 INFO L87 Difference]: Start difference. First operand 129 states and 131 transitions. Second operand 22 states. [2020-10-14 18:32:13,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:32:13,441 INFO L93 Difference]: Finished difference Result 186 states and 200 transitions. [2020-10-14 18:32:13,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-14 18:32:13,442 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 126 [2020-10-14 18:32:13,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:32:13,443 INFO L225 Difference]: With dead ends: 186 [2020-10-14 18:32:13,444 INFO L226 Difference]: Without dead ends: 139 [2020-10-14 18:32:13,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 22 SyntacticMatches, 22 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=318, Invalid=1164, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 18:32:13,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-14 18:32:13,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 137. [2020-10-14 18:32:13,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-14 18:32:13,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 141 transitions. [2020-10-14 18:32:13,459 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 141 transitions. Word has length 126 [2020-10-14 18:32:13,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:32:13,459 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 141 transitions. [2020-10-14 18:32:13,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 18:32:13,460 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 141 transitions. [2020-10-14 18:32:13,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-14 18:32:13,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:32:13,461 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:32:13,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 18:32:13,462 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:32:13,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:32:13,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1750410523, now seen corresponding path program 19 times [2020-10-14 18:32:13,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:32:13,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828013297] [2020-10-14 18:32:13,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:32:13,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:13,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:13,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:13,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:14,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:14,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:14,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:15,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:17,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:17,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:18,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:18,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 18:32:18,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 18:32:18,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 18:32:18,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:18,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:18,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-10-14 18:32:18,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:32:18,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-14 18:32:18,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:19,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:32:19,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:19,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:19,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:19,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:32:19,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:19,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:19,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:19,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:19,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:32:19,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:19,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:32:19,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:19,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:32:19,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:19,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:19,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:19,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:19,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:19,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:19,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:19,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:19,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:19,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:19,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:19,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:19,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 18:32:19,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:19,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:19,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:19,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:19,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:19,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:19,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:19,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:19,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:19,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:19,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:19,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:19,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 18:32:19,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:19,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:19,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:19,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:19,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:19,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:19,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:19,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:19,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:19,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:19,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:19,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:19,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 18:32:19,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:19,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:19,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:19,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:19,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:19,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:19,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:19,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:19,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:19,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:19,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:19,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:19,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 18:32:19,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:19,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:19,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:19,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:19,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:19,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:19,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:19,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:19,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:19,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:19,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:19,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:19,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 18:32:19,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:19,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:19,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:19,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:19,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:19,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:19,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:19,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:19,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:19,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:19,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:19,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:19,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 18:32:19,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:19,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:19,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:19,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:19,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:19,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:19,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:19,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:19,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:19,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:19,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:19,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:19,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-14 18:32:19,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:19,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:19,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:19,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:19,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:19,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:19,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:19,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:19,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:19,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:19,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:19,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:19,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-14 18:32:19,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:19,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:19,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:19,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:19,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:19,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:19,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:19,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:19,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:19,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:19,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:19,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:19,595 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 18 proven. 390 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-14 18:32:19,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828013297] [2020-10-14 18:32:19,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:32:19,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 18:32:19,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472906237] [2020-10-14 18:32:19,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 18:32:19,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:32:19,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 18:32:19,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2020-10-14 18:32:19,597 INFO L87 Difference]: Start difference. First operand 137 states and 141 transitions. Second operand 22 states. [2020-10-14 18:32:22,730 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-10-14 18:32:24,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:32:24,309 INFO L93 Difference]: Finished difference Result 150 states and 155 transitions. [2020-10-14 18:32:24,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-14 18:32:24,314 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 130 [2020-10-14 18:32:24,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:32:24,315 INFO L225 Difference]: With dead ends: 150 [2020-10-14 18:32:24,315 INFO L226 Difference]: Without dead ends: 148 [2020-10-14 18:32:24,317 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 23 SyntacticMatches, 21 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=743, Invalid=3679, Unknown=0, NotChecked=0, Total=4422 [2020-10-14 18:32:24,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-14 18:32:24,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 145. [2020-10-14 18:32:24,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-14 18:32:24,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 149 transitions. [2020-10-14 18:32:24,331 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 149 transitions. Word has length 130 [2020-10-14 18:32:24,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:32:24,332 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 149 transitions. [2020-10-14 18:32:24,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 18:32:24,332 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 149 transitions. [2020-10-14 18:32:24,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-14 18:32:24,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:32:24,334 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:32:24,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 18:32:24,334 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:32:24,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:32:24,334 INFO L82 PathProgramCache]: Analyzing trace with hash -669098286, now seen corresponding path program 20 times [2020-10-14 18:32:24,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:32:24,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159597341] [2020-10-14 18:32:24,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:32:24,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:24,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:24,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:25,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:25,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:25,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:25,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:28,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:29,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:29,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 18:32:29,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 18:32:29,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 18:32:29,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:29,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:29,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 47 [2020-10-14 18:32:29,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:32:29,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-14 18:32:29,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:31,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:32:31,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:31,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:31,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:31,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:32:31,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:31,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:31,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:31,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:31,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:32:31,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:31,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:32:31,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:31,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:32:31,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:31,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:31,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:31,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:31,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:31,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:31,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:31,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:31,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:31,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:31,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:31,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:31,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 18:32:31,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:31,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:31,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:31,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:31,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:31,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:32:31,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:31,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:31,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:31,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:31,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:31,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:31,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 18:32:31,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:31,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:31,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:31,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:31,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:31,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:32:31,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:31,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:31,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:31,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:31,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:31,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:31,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 18:32:31,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:31,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:31,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:31,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:31,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:31,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:32:31,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:31,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:31,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:31,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:31,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:31,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:31,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 18:32:31,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:31,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:31,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:31,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:31,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:31,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:32:31,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:31,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:31,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:31,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:31,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:31,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:31,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 18:32:31,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:31,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:31,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:31,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:31,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:31,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:32:31,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:31,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:31,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:31,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:31,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:31,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:31,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 18:32:31,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:31,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:31,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:31,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:31,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:31,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:32:31,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:31,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:31,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:31,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:31,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:31,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:31,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-14 18:32:31,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:31,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:31,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:31,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:31,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:31,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:32:31,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:31,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:31,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:31,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:31,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:31,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:31,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-14 18:32:31,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:31,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:31,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:31,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:31,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:31,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:32:31,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:31,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:31,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:31,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:31,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:31,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:31,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 18:32:31,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:31,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:31,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:31,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:31,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:31,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:32:31,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:31,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:31,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:31,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:31,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:31,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:31,803 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 200 proven. 251 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-14 18:32:31,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159597341] [2020-10-14 18:32:31,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:32:31,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 18:32:31,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578217642] [2020-10-14 18:32:31,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-14 18:32:31,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:32:31,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-14 18:32:31,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=683, Unknown=0, NotChecked=0, Total=992 [2020-10-14 18:32:31,805 INFO L87 Difference]: Start difference. First operand 145 states and 149 transitions. Second operand 32 states. [2020-10-14 18:32:32,542 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2020-10-14 18:32:34,326 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2020-10-14 18:32:34,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:32:34,579 INFO L93 Difference]: Finished difference Result 220 states and 239 transitions. [2020-10-14 18:32:34,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-14 18:32:34,580 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 138 [2020-10-14 18:32:34,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:32:34,582 INFO L225 Difference]: With dead ends: 220 [2020-10-14 18:32:34,582 INFO L226 Difference]: Without dead ends: 169 [2020-10-14 18:32:34,587 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 23 SyntacticMatches, 17 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 627 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=710, Invalid=2046, Unknown=0, NotChecked=0, Total=2756 [2020-10-14 18:32:34,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-14 18:32:34,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 153. [2020-10-14 18:32:34,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-14 18:32:34,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 159 transitions. [2020-10-14 18:32:34,615 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 159 transitions. Word has length 138 [2020-10-14 18:32:34,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:32:34,616 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 159 transitions. [2020-10-14 18:32:34,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-14 18:32:34,616 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 159 transitions. [2020-10-14 18:32:34,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-14 18:32:34,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:32:34,618 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:32:34,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 18:32:34,618 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:32:34,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:32:34,619 INFO L82 PathProgramCache]: Analyzing trace with hash 510500173, now seen corresponding path program 21 times [2020-10-14 18:32:34,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:32:34,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166798734] [2020-10-14 18:32:34,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:32:34,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:34,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:35,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:35,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:35,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:36,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:36,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:39,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:39,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:39,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-14 18:32:39,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 18:32:39,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 18:32:39,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:39,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:39,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 47 [2020-10-14 18:32:39,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:32:39,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-14 18:32:39,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:40,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:32:40,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:40,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:40,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:40,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:32:40,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:40,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:40,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:40,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:40,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:32:40,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:40,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:32:40,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:40,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 18:32:40,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:40,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:40,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:40,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:40,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:40,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:40,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:40,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:40,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:40,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:40,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:40,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:40,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:32:40,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:40,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:40,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:40,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:40,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:40,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:40,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:40,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:40,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:40,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:40,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:40,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:40,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 18:32:40,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:40,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:40,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:40,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:40,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:40,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:40,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:40,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:40,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:40,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:40,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:40,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:40,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 18:32:40,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:40,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:40,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:40,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:40,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:40,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:40,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:40,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:40,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:40,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:40,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:40,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:40,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 18:32:40,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:40,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:40,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:40,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:40,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:40,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:40,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:40,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:40,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:40,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:40,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:40,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:40,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 18:32:40,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:40,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:40,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:40,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:40,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:40,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:40,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:40,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:40,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:40,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:40,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:40,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:40,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-14 18:32:40,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:40,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:40,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:40,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:40,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:40,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:40,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:40,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:40,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:40,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:40,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:40,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:40,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-14 18:32:40,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:40,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:40,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:40,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:40,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:40,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:40,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:40,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:40,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:40,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:40,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:40,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:40,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-14 18:32:40,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:40,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:40,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:40,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:40,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:40,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:40,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:40,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:40,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:40,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:40,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:40,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:40,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 18:32:40,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:40,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:40,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:40,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:40,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:40,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:40,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:40,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:40,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:40,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:40,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:40,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:41,013 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 20 proven. 473 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2020-10-14 18:32:41,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166798734] [2020-10-14 18:32:41,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:32:41,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 18:32:41,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172886755] [2020-10-14 18:32:41,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 18:32:41,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:32:41,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 18:32:41,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=420, Unknown=0, NotChecked=0, Total=462 [2020-10-14 18:32:41,015 INFO L87 Difference]: Start difference. First operand 153 states and 159 transitions. Second operand 22 states. [2020-10-14 18:32:44,123 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-10-14 18:32:44,627 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2020-10-14 18:32:44,919 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2020-10-14 18:32:45,152 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2020-10-14 18:32:45,376 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2020-10-14 18:32:47,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:32:47,749 INFO L93 Difference]: Finished difference Result 173 states and 181 transitions. [2020-10-14 18:32:47,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-14 18:32:47,750 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 142 [2020-10-14 18:32:47,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:32:47,753 INFO L225 Difference]: With dead ends: 173 [2020-10-14 18:32:47,753 INFO L226 Difference]: Without dead ends: 171 [2020-10-14 18:32:47,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 25 SyntacticMatches, 25 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 812 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=871, Invalid=4099, Unknown=0, NotChecked=0, Total=4970 [2020-10-14 18:32:47,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-14 18:32:47,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 161. [2020-10-14 18:32:47,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-14 18:32:47,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 167 transitions. [2020-10-14 18:32:47,776 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 167 transitions. Word has length 142 [2020-10-14 18:32:47,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:32:47,776 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 167 transitions. [2020-10-14 18:32:47,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 18:32:47,777 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 167 transitions. [2020-10-14 18:32:47,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-14 18:32:47,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:32:47,779 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:32:47,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 18:32:47,779 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:32:47,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:32:47,780 INFO L82 PathProgramCache]: Analyzing trace with hash -6519548, now seen corresponding path program 22 times [2020-10-14 18:32:47,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:32:47,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222524406] [2020-10-14 18:32:47,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:32:47,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:47,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:48,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:48,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:48,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:48,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:48,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:49,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:49,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:49,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:51,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:51,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:52,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:52,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-14 18:32:52,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 18:32:52,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 18:32:52,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:52,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:52,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 51 [2020-10-14 18:32:52,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:32:52,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-14 18:32:52,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:54,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:32:54,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:54,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:54,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:54,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:32:54,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:54,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:54,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:54,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:54,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:32:54,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:54,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:32:54,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:32:54,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 18:32:54,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:54,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:54,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:54,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:54,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:54,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:32:54,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:54,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:54,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:54,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:54,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:54,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:54,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:32:54,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:54,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:54,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:54,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:54,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:54,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:32:54,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:54,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:54,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:54,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:54,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:54,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:32:54,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 18:32:54,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:54,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:54,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:54,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:54,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:54,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:32:54,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:54,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:54,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:54,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:54,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:54,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:54,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 18:32:54,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:54,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:54,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:54,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:54,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:54,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:32:54,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:54,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:54,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:54,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:54,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:54,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:54,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 18:32:54,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:54,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:54,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:54,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:54,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:54,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:32:54,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:54,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:54,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:54,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:54,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:54,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:54,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 18:32:54,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:54,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:54,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:54,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:54,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:54,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:32:54,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:54,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:54,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:54,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:54,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:54,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:32:54,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-14 18:32:54,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:54,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:54,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:54,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:54,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:54,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:32:54,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:54,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:54,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:54,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:54,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:54,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:32:54,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-14 18:32:54,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:54,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:54,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:54,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:54,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:54,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:54,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:54,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:54,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:54,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:54,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:54,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:54,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-14 18:32:54,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:54,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:54,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:54,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:54,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:54,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:54,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:54,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:54,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:54,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:54,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:54,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:32:54,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 18:32:54,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:54,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:54,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:54,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:54,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:54,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:32:54,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:54,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:54,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:54,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:54,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:54,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:54,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-14 18:32:54,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:54,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:54,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:54,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:54,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:54,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:32:54,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:54,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:54,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:54,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:54,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:54,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:54,660 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 242 proven. 298 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-14 18:32:54,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222524406] [2020-10-14 18:32:54,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:32:54,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 18:32:54,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897181424] [2020-10-14 18:32:54,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 18:32:54,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:32:54,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 18:32:54,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=374, Unknown=0, NotChecked=0, Total=506 [2020-10-14 18:32:54,662 INFO L87 Difference]: Start difference. First operand 161 states and 167 transitions. Second operand 23 states. [2020-10-14 18:32:57,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:32:57,162 INFO L93 Difference]: Finished difference Result 236 states and 257 transitions. [2020-10-14 18:32:57,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-14 18:32:57,163 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 150 [2020-10-14 18:32:57,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:32:57,165 INFO L225 Difference]: With dead ends: 236 [2020-10-14 18:32:57,165 INFO L226 Difference]: Without dead ends: 181 [2020-10-14 18:32:57,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 27 SyntacticMatches, 29 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=445, Invalid=1535, Unknown=0, NotChecked=0, Total=1980 [2020-10-14 18:32:57,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-14 18:32:57,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 157. [2020-10-14 18:32:57,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-14 18:32:57,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 162 transitions. [2020-10-14 18:32:57,188 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 162 transitions. Word has length 150 [2020-10-14 18:32:57,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:32:57,188 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 162 transitions. [2020-10-14 18:32:57,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 18:32:57,188 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 162 transitions. [2020-10-14 18:32:57,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-14 18:32:57,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:32:57,192 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:32:57,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 18:32:57,192 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:32:57,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:32:57,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1678580993, now seen corresponding path program 23 times [2020-10-14 18:32:57,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:32:57,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [303540638] [2020-10-14 18:32:57,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:32:57,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:57,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:57,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:58,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:58,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:58,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:58,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:58,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:59,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:01,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:02,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:02,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-14 18:33:02,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 18:33:02,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 18:33:02,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:02,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:02,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 51 [2020-10-14 18:33:02,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:33:02,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-14 18:33:02,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:03,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:33:03,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:03,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:03,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:03,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:33:03,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:03,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:03,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:03,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:03,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:33:03,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:03,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:33:03,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:03,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 18:33:03,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:03,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:03,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:03,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:03,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:03,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:03,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:03,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:03,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:03,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:03,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:03,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:03,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 18:33:03,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:03,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:03,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:03,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:03,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:03,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:33:03,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:03,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:03,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:03,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:03,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:03,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:03,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 18:33:03,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:03,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:03,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:03,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:03,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:03,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:03,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:03,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:03,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:03,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:03,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:03,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:03,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 18:33:03,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:03,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:03,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:03,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:03,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:03,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:03,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:03,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:03,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:03,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:03,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:03,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:03,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 18:33:03,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:03,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:03,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:03,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:03,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:03,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:33:03,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:03,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:03,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:03,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:03,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:03,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:03,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 18:33:03,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:03,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:03,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:03,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:03,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:03,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:33:03,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:03,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:03,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:03,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:03,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:03,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:03,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-14 18:33:03,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:03,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:03,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:03,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:03,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:03,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:33:03,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:03,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:03,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:03,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:03,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:03,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:33:03,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-14 18:33:03,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:03,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:03,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:03,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:03,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:03,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:03,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:03,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:03,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:03,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:03,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:03,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:03,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 18:33:03,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:03,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:03,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:03,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:03,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:03,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:03,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:03,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:03,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:03,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:03,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:03,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:03,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 18:33:03,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:03,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:03,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:03,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:03,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:03,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:03,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:03,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:03,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:03,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:03,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:03,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:03,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-14 18:33:03,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:03,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:03,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:03,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:03,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:03,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:03,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:03,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:03,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:03,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:03,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:03,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:03,878 INFO L134 CoverageAnalysis]: Checked inductivity of 809 backedges. 22 proven. 564 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2020-10-14 18:33:03,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [303540638] [2020-10-14 18:33:03,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:33:03,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 18:33:03,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144207435] [2020-10-14 18:33:03,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 18:33:03,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:33:03,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 18:33:03,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=462, Unknown=0, NotChecked=0, Total=506 [2020-10-14 18:33:03,881 INFO L87 Difference]: Start difference. First operand 157 states and 162 transitions. Second operand 23 states. [2020-10-14 18:33:06,467 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-10-14 18:33:06,952 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-10-14 18:33:07,246 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2020-10-14 18:33:07,468 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-10-14 18:33:07,772 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2020-10-14 18:33:08,017 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2020-10-14 18:33:08,424 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-10-14 18:33:08,699 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-10-14 18:33:09,031 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-14 18:33:09,306 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2020-10-14 18:33:09,551 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-10-14 18:33:09,716 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-14 18:33:12,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:33:12,043 INFO L93 Difference]: Finished difference Result 178 states and 185 transitions. [2020-10-14 18:33:12,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-10-14 18:33:12,044 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 154 [2020-10-14 18:33:12,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:33:12,046 INFO L225 Difference]: With dead ends: 178 [2020-10-14 18:33:12,046 INFO L226 Difference]: Without dead ends: 176 [2020-10-14 18:33:12,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 27 SyntacticMatches, 28 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 987 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=1025, Invalid=4827, Unknown=0, NotChecked=0, Total=5852 [2020-10-14 18:33:12,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-14 18:33:12,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 165. [2020-10-14 18:33:12,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-14 18:33:12,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 170 transitions. [2020-10-14 18:33:12,066 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 170 transitions. Word has length 154 [2020-10-14 18:33:12,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:33:12,067 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 170 transitions. [2020-10-14 18:33:12,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 18:33:12,067 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 170 transitions. [2020-10-14 18:33:12,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-14 18:33:12,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:33:12,068 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:33:12,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 18:33:12,069 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:33:12,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:33:12,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1314785098, now seen corresponding path program 24 times [2020-10-14 18:33:12,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:33:12,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [524115780] [2020-10-14 18:33:12,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:33:12,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:12,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:12,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:13,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:13,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:13,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:13,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:13,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:14,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:17,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:17,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 18:33:17,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 18:33:17,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 18:33:17,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:17,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:17,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 55 [2020-10-14 18:33:17,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:33:17,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-14 18:33:17,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:19,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:33:19,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:19,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:19,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:19,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:33:19,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:19,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:19,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:19,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:19,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:33:19,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:19,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:33:19,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:19,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 18:33:19,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:19,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:19,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:19,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:19,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:19,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:33:19,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:19,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:19,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:19,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:19,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:19,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:19,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 18:33:19,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:19,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:19,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:19,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:19,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:19,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:19,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:19,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:19,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:19,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:19,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:19,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:19,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 18:33:19,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:19,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:19,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:19,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:19,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:19,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:19,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:19,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:19,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:19,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:19,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:19,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:19,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 18:33:19,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:19,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:19,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:19,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:19,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:19,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:19,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:19,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:19,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:19,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:19,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:19,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:19,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 18:33:19,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:19,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:19,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:19,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:19,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:19,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:19,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:19,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:19,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:19,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:19,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:19,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:19,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 18:33:19,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:19,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:19,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:19,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:19,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:19,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:33:19,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:19,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:19,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:19,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:19,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:19,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:19,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-14 18:33:19,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:19,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:20,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:20,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:20,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:20,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:33:20,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:20,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:20,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:20,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:20,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:20,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:20,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-14 18:33:20,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:20,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:20,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:20,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:20,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:20,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:33:20,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:20,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:20,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:20,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:20,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:20,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:20,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 18:33:20,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:20,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:20,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:20,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:20,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:20,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:33:20,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:20,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:20,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:20,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:20,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:20,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:20,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 18:33:20,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:20,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:20,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:20,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:20,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:20,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:33:20,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:20,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:20,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:20,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:20,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:20,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:20,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-14 18:33:20,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:20,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:20,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:20,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:20,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:20,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:20,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:20,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:20,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:20,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:20,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:20,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:20,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-14 18:33:20,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:20,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:20,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:20,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:20,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:20,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:20,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:20,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:20,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:20,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:20,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:20,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:20,144 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 288 proven. 349 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-14 18:33:20,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [524115780] [2020-10-14 18:33:20,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:33:20,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 18:33:20,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396284902] [2020-10-14 18:33:20,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 18:33:20,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:33:20,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 18:33:20,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=609, Unknown=0, NotChecked=0, Total=870 [2020-10-14 18:33:20,146 INFO L87 Difference]: Start difference. First operand 165 states and 170 transitions. Second operand 30 states. [2020-10-14 18:33:21,029 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2020-10-14 18:33:23,850 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-10-14 18:33:24,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:33:24,182 INFO L93 Difference]: Finished difference Result 253 states and 277 transitions. [2020-10-14 18:33:24,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-14 18:33:24,183 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 162 [2020-10-14 18:33:24,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:33:24,185 INFO L225 Difference]: With dead ends: 253 [2020-10-14 18:33:24,185 INFO L226 Difference]: Without dead ends: 194 [2020-10-14 18:33:24,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 29 SyntacticMatches, 26 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 668 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=859, Invalid=2333, Unknown=0, NotChecked=0, Total=3192 [2020-10-14 18:33:24,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-14 18:33:24,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 169. [2020-10-14 18:33:24,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-14 18:33:24,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 175 transitions. [2020-10-14 18:33:24,205 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 175 transitions. Word has length 162 [2020-10-14 18:33:24,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:33:24,206 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 175 transitions. [2020-10-14 18:33:24,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 18:33:24,206 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 175 transitions. [2020-10-14 18:33:24,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-14 18:33:24,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:33:24,207 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:33:24,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 18:33:24,208 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:33:24,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:33:24,208 INFO L82 PathProgramCache]: Analyzing trace with hash -255052239, now seen corresponding path program 25 times [2020-10-14 18:33:24,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:33:24,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774745708] [2020-10-14 18:33:24,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:33:24,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:24,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:24,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:24,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:25,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:25,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:25,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:27,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:29,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:29,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-14 18:33:29,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 18:33:29,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 18:33:29,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:29,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:29,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 55 [2020-10-14 18:33:29,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:33:29,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-14 18:33:29,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:30,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:33:30,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:30,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:30,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:30,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:33:30,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:30,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:30,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:30,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:30,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:33:30,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:30,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:33:30,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:30,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:33:30,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:30,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:30,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:30,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:30,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:30,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:30,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:30,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:30,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:30,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:30,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:30,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:30,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 18:33:30,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:30,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:30,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:30,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:30,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:30,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:30,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:30,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:30,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:30,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:30,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:30,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:30,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 18:33:30,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:30,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:30,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:30,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:30,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:30,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:30,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:30,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:30,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:30,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:30,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:30,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:30,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 18:33:30,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:30,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:30,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:30,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:30,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:30,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:30,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:30,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:30,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:30,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:30,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:30,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:30,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 18:33:30,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:30,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:30,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:30,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:30,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:30,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:30,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:30,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:30,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:30,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:30,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:30,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:30,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-14 18:33:30,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:30,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:30,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:30,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:30,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:30,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:30,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:30,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:30,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:30,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:30,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:30,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:30,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-14 18:33:30,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:30,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:30,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:30,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:30,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:30,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:30,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:30,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:30,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:30,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:30,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:30,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:30,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-14 18:33:30,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:30,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:30,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:30,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:30,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:30,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:30,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:30,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:30,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:30,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:30,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:30,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:30,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 18:33:30,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:30,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:30,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:30,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:30,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:30,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:30,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:30,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:30,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:30,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:30,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:30,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:30,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-14 18:33:30,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:30,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:30,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:30,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:30,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:30,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:30,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:30,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:30,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:30,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:30,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:30,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:30,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-14 18:33:30,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:30,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:30,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:30,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:30,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:30,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:30,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:30,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:30,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:30,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:30,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:30,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:30,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-14 18:33:30,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:30,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:30,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:30,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:30,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:30,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:30,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:30,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:30,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:30,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:30,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:30,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:30,948 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 24 proven. 663 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2020-10-14 18:33:30,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1774745708] [2020-10-14 18:33:30,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:33:30,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 18:33:30,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078808425] [2020-10-14 18:33:30,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 18:33:30,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:33:30,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 18:33:30,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=506, Unknown=0, NotChecked=0, Total=552 [2020-10-14 18:33:30,950 INFO L87 Difference]: Start difference. First operand 169 states and 175 transitions. Second operand 24 states. [2020-10-14 18:33:33,908 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2020-10-14 18:33:34,112 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-10-14 18:33:34,397 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2020-10-14 18:33:34,679 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2020-10-14 18:33:35,171 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-14 18:33:35,478 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-14 18:33:36,041 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2020-10-14 18:33:36,352 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-10-14 18:33:36,757 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2020-10-14 18:33:37,084 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2020-10-14 18:33:37,385 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2020-10-14 18:33:37,624 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2020-10-14 18:33:40,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:33:40,789 INFO L93 Difference]: Finished difference Result 192 states and 200 transitions. [2020-10-14 18:33:40,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-10-14 18:33:40,791 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 166 [2020-10-14 18:33:40,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:33:40,794 INFO L225 Difference]: With dead ends: 192 [2020-10-14 18:33:40,794 INFO L226 Difference]: Without dead ends: 190 [2020-10-14 18:33:40,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 29 SyntacticMatches, 31 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1237 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=1197, Invalid=5775, Unknown=0, NotChecked=0, Total=6972 [2020-10-14 18:33:40,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-14 18:33:40,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 177. [2020-10-14 18:33:40,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-10-14 18:33:40,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 183 transitions. [2020-10-14 18:33:40,813 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 183 transitions. Word has length 166 [2020-10-14 18:33:40,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:33:40,814 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 183 transitions. [2020-10-14 18:33:40,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 18:33:40,814 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 183 transitions. [2020-10-14 18:33:40,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-14 18:33:40,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:33:40,815 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:33:40,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 18:33:40,815 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:33:40,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:33:40,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1121319400, now seen corresponding path program 26 times [2020-10-14 18:33:40,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:33:40,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851268133] [2020-10-14 18:33:40,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:33:40,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:40,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:41,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:42,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:42,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:42,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:42,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:42,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:43,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:45,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:45,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-14 18:33:45,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 18:33:45,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 18:33:45,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:45,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:45,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 59 [2020-10-14 18:33:45,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:33:45,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 18:33:45,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:47,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:33:47,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:47,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:47,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:47,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:33:47,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:47,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:47,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:47,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:47,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:33:47,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:47,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:33:47,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:47,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:33:47,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:47,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:47,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:47,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:47,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:47,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:47,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:47,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:47,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:47,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:47,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:47,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:47,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 18:33:47,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:47,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:47,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:47,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:47,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:47,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:47,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:47,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:47,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:47,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:47,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:47,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:47,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 18:33:47,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:47,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:47,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:47,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:47,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:47,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:47,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:47,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:47,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:47,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:47,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:47,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:47,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 18:33:47,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:47,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:47,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:47,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:47,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:47,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:47,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:47,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:47,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:47,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:47,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:47,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:47,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 18:33:47,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:47,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:47,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:47,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:47,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:47,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:47,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:47,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:47,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:47,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:47,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:47,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:47,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-14 18:33:47,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:47,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:47,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:47,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:47,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:47,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:47,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:47,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:47,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:47,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:47,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:47,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:47,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-14 18:33:47,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:47,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:47,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:47,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:47,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:47,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:47,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:47,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:47,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:47,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:47,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:47,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:47,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-14 18:33:47,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:47,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:47,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:47,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:47,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:47,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:47,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:47,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:47,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:47,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:47,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:47,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:47,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 18:33:47,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:47,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:47,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:47,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:47,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:47,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:47,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:47,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:47,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:47,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:47,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:47,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:47,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-14 18:33:47,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:47,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:47,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:47,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:47,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:47,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:48,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:48,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:48,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:48,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:48,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:48,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:48,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-14 18:33:48,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:48,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:48,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:48,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:48,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:48,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:48,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:48,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:48,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:48,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:48,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:48,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:48,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-14 18:33:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:48,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:48,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:48,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:48,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:48,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:48,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:48,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:48,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:48,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:48,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:48,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:48,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-14 18:33:48,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:48,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:48,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:48,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:48,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:48,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:33:48,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:48,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:48,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:48,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:48,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:48,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:48,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1054 backedges. 338 proven. 404 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-10-14 18:33:48,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851268133] [2020-10-14 18:33:48,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:33:48,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 18:33:48,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167910057] [2020-10-14 18:33:48,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 18:33:48,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:33:48,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 18:33:48,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=435, Unknown=0, NotChecked=0, Total=600 [2020-10-14 18:33:48,173 INFO L87 Difference]: Start difference. First operand 177 states and 183 transitions. Second operand 25 states. [2020-10-14 18:33:51,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:33:51,636 INFO L93 Difference]: Finished difference Result 273 states and 300 transitions. [2020-10-14 18:33:51,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-14 18:33:51,637 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 174 [2020-10-14 18:33:51,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:33:51,639 INFO L225 Difference]: With dead ends: 273 [2020-10-14 18:33:51,639 INFO L226 Difference]: Without dead ends: 210 [2020-10-14 18:33:51,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 30 SyntacticMatches, 35 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=585, Invalid=1965, Unknown=0, NotChecked=0, Total=2550 [2020-10-14 18:33:51,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-14 18:33:51,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 181. [2020-10-14 18:33:51,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-14 18:33:51,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 188 transitions. [2020-10-14 18:33:51,659 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 188 transitions. Word has length 174 [2020-10-14 18:33:51,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:33:51,660 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 188 transitions. [2020-10-14 18:33:51,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 18:33:51,660 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 188 transitions. [2020-10-14 18:33:51,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-14 18:33:51,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:33:51,661 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:33:51,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 18:33:51,662 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:33:51,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:33:51,662 INFO L82 PathProgramCache]: Analyzing trace with hash -461318429, now seen corresponding path program 27 times [2020-10-14 18:33:51,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:33:51,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [185767858] [2020-10-14 18:33:51,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:33:51,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:51,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:52,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:52,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:53,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:53,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:53,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:54,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:56,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:56,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-14 18:33:56,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 18:33:56,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 18:33:56,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:56,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:56,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 59 [2020-10-14 18:33:56,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:33:56,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-14 18:33:56,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:58,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:33:58,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:58,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:58,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:58,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:33:58,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:58,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:58,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:58,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:58,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:33:58,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:58,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:33:58,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:58,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 18:33:58,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:58,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:58,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:58,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:58,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:58,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:58,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:58,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:58,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:58,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:58,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:58,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:58,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 18:33:58,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:58,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:58,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:58,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:58,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:58,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:58,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:58,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:58,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:58,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:58,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:58,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:58,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 18:33:58,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:58,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:58,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:58,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:58,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:58,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:58,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:58,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:58,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:58,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:58,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:58,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:58,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 18:33:58,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:58,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:58,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:58,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:58,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:58,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:58,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:58,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:58,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:58,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:58,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:58,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:58,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 18:33:58,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:58,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:58,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:58,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:58,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:58,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:58,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:58,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:58,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:58,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:58,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:58,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:58,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-14 18:33:58,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:58,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:58,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:58,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:58,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:58,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:58,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:58,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:58,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:58,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:58,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:58,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:58,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-14 18:33:58,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:58,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:58,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:58,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:58,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:58,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:58,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:58,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:58,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:58,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:58,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:58,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:58,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 18:33:58,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:58,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:58,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:58,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:58,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:58,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:58,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:58,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:58,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:58,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:58,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:58,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:58,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 18:33:58,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:58,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:58,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:58,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:58,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:58,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:58,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:58,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:58,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:58,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:58,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:58,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 18:33:58,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-14 18:33:58,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:58,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:58,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:58,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:58,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:58,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:58,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:58,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:58,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:58,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:58,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:58,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:58,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-14 18:33:58,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:58,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:58,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:58,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:58,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:58,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:58,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:58,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:58,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:58,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:58,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:58,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:58,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-14 18:33:58,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:58,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:58,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:58,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:58,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:58,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:58,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:58,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:58,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:58,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:58,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:58,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:58,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-14 18:33:58,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:58,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:58,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:58,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:58,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:58,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:58,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:58,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:58,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:58,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:58,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:58,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:58,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 26 proven. 770 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2020-10-14 18:33:58,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [185767858] [2020-10-14 18:33:58,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:33:58,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 18:33:58,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366396924] [2020-10-14 18:33:58,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 18:33:58,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:33:58,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 18:33:58,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=552, Unknown=0, NotChecked=0, Total=600 [2020-10-14 18:33:58,790 INFO L87 Difference]: Start difference. First operand 181 states and 188 transitions. Second operand 25 states. [2020-10-14 18:34:03,751 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2020-10-14 18:34:04,068 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2020-10-14 18:34:04,718 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2020-10-14 18:34:05,019 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2020-10-14 18:34:05,221 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2020-10-14 18:34:08,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:34:08,179 INFO L93 Difference]: Finished difference Result 206 states and 215 transitions. [2020-10-14 18:34:08,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-10-14 18:34:08,180 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 178 [2020-10-14 18:34:08,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:34:08,183 INFO L225 Difference]: With dead ends: 206 [2020-10-14 18:34:08,183 INFO L226 Difference]: Without dead ends: 204 [2020-10-14 18:34:08,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 31 SyntacticMatches, 34 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1388 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=1372, Invalid=6460, Unknown=0, NotChecked=0, Total=7832 [2020-10-14 18:34:08,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-14 18:34:08,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 189. [2020-10-14 18:34:08,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-14 18:34:08,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 196 transitions. [2020-10-14 18:34:08,206 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 196 transitions. Word has length 178 [2020-10-14 18:34:08,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:34:08,206 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 196 transitions. [2020-10-14 18:34:08,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 18:34:08,207 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 196 transitions. [2020-10-14 18:34:08,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-14 18:34:08,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:34:08,208 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:34:08,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 18:34:08,208 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:34:08,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:34:08,209 INFO L82 PathProgramCache]: Analyzing trace with hash 528468122, now seen corresponding path program 28 times [2020-10-14 18:34:08,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:34:08,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [412866534] [2020-10-14 18:34:08,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:34:08,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:08,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:10,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:10,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:10,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:10,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:10,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:10,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:10,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:11,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:11,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:11,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:13,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:13,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-14 18:34:13,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 18:34:13,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 18:34:13,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:13,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:13,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 63 [2020-10-14 18:34:13,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:34:13,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-14 18:34:13,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:15,470 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 35 [2020-10-14 18:34:15,680 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 37 [2020-10-14 18:34:15,961 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 39 [2020-10-14 18:34:17,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:34:17,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:17,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:17,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:17,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:34:17,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:17,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:34:17,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:17,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:17,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:17,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:17,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:17,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:17,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 18:34:17,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:17,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:17,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:17,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:34:17,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:17,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:34:17,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:17,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:17,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:17,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:17,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:34:17,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:17,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 18:34:17,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:17,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:17,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:17,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:34:17,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:17,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:34:17,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:17,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:17,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:17,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:17,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:34:17,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:17,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 18:34:17,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:17,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:17,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:17,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:34:17,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:17,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:34:17,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:17,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:17,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:17,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:17,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:34:17,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:17,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 18:34:17,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:17,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:17,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:17,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:34:17,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:17,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:34:17,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:17,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:17,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:17,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:17,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:34:17,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:17,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 18:34:17,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:17,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:17,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:17,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:34:17,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:17,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:34:17,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:17,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:17,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:17,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:17,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:34:17,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:17,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-14 18:34:17,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:17,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:17,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:17,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:34:17,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:17,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:34:17,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:17,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:17,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:17,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:17,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:34:17,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:17,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-14 18:34:17,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:17,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:17,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:17,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:34:17,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:17,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:34:17,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:17,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:17,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:17,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:17,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:34:17,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:17,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 18:34:17,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:17,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:17,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:17,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:34:17,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:17,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:34:17,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:17,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:17,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:17,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:17,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:34:17,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:17,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 18:34:17,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:17,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:17,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:17,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:34:17,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:17,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:34:17,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:17,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:17,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:17,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:17,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:34:17,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:17,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-14 18:34:17,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:17,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:17,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:17,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:34:17,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:17,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:34:17,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:17,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:17,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:17,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:17,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:34:17,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:17,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-14 18:34:17,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:17,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:17,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:17,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:34:17,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:17,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:34:17,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:17,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:17,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:17,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:17,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:34:17,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:17,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-14 18:34:17,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:17,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:17,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:17,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:34:17,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:17,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:34:17,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:17,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:17,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:17,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:17,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:34:17,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:17,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-14 18:34:17,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:17,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:17,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:17,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:34:17,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:17,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:34:17,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:17,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:17,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:17,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:17,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:34:17,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:17,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-10-14 18:34:17,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:17,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:17,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:17,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:34:17,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:17,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:34:17,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:17,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:17,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:17,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:17,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:34:17,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:18,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1219 backedges. 392 proven. 463 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2020-10-14 18:34:18,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [412866534] [2020-10-14 18:34:18,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:34:18,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-14 18:34:18,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086470920] [2020-10-14 18:34:18,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-14 18:34:18,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:34:18,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-14 18:34:18,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=537, Invalid=1023, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 18:34:18,004 INFO L87 Difference]: Start difference. First operand 189 states and 196 transitions. Second operand 40 states.