/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:17:13,772 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:17:13,776 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:17:13,814 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:17:13,815 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:17:13,823 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:17:13,826 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:17:13,830 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:17:13,833 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:17:13,836 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:17:13,838 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:17:13,839 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:17:13,840 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:17:13,843 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:17:13,846 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:17:13,848 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:17:13,850 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:17:13,852 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:17:13,853 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:17:13,862 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:17:13,864 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:17:13,865 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:17:13,866 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:17:13,867 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:17:13,885 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:17:13,885 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:17:13,885 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:17:13,887 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:17:13,887 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:17:13,890 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:17:13,891 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:17:13,891 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:17:13,896 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:17:13,897 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:17:13,898 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:17:13,898 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:17:13,899 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:17:13,899 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:17:13,900 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:17:13,901 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:17:13,901 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:17:13,902 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 10:17:13,928 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:17:13,928 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:17:13,930 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:17:13,930 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:17:13,930 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:17:13,930 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:17:13,930 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:17:13,931 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:17:13,931 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:17:13,931 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:17:13,931 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:17:13,931 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:17:13,932 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:17:13,932 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:17:13,932 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:17:13,932 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:17:13,932 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:17:13,933 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:17:13,933 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:17:13,933 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:17:13,933 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:17:13,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:17:13,934 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:17:13,934 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:17:13,934 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:17:13,934 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:17:13,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:17:13,935 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:17:13,935 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:17:13,935 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:17:14,405 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:17:14,435 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:17:14,440 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:17:14,443 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:17:14,444 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:17:14,445 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i [2020-09-25 10:17:14,540 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2525429c7/2523ded550814636b52c34242c2558b5/FLAG0ed0c20c0 [2020-09-25 10:17:15,093 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:17:15,096 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i [2020-09-25 10:17:15,106 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2525429c7/2523ded550814636b52c34242c2558b5/FLAG0ed0c20c0 [2020-09-25 10:17:15,414 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2525429c7/2523ded550814636b52c34242c2558b5 [2020-09-25 10:17:15,427 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:17:15,432 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:17:15,433 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:17:15,433 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:17:15,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:17:15,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:17:15" (1/1) ... [2020-09-25 10:17:15,444 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73ad355a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:15, skipping insertion in model container [2020-09-25 10:17:15,444 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:17:15" (1/1) ... [2020-09-25 10:17:15,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:17:15,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:17:15,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:17:15,718 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:17:15,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:17:15,767 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:17:15,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:15 WrapperNode [2020-09-25 10:17:15,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:17:15,769 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:17:15,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:17:15,769 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:17:15,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:15" (1/1) ... [2020-09-25 10:17:15,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:15" (1/1) ... [2020-09-25 10:17:15,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:15" (1/1) ... [2020-09-25 10:17:15,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:15" (1/1) ... [2020-09-25 10:17:15,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:15" (1/1) ... [2020-09-25 10:17:15,909 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:15" (1/1) ... [2020-09-25 10:17:15,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:15" (1/1) ... [2020-09-25 10:17:15,913 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:17:15,913 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:17:15,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:17:15,914 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:17:15,915 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:17:16,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:17:16,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:17:16,002 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 10:17:16,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 10:17:16,003 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:17:16,003 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:17:16,003 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 10:17:16,003 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 10:17:16,003 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 10:17:16,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:17:16,004 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:17:16,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:17:16,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:17:16,352 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:17:16,353 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 10:17:16,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:17:16 BoogieIcfgContainer [2020-09-25 10:17:16,360 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:17:16,370 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:17:16,370 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:17:16,375 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:17:16,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:17:15" (1/3) ... [2020-09-25 10:17:16,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@780c2c10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:17:16, skipping insertion in model container [2020-09-25 10:17:16,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:15" (2/3) ... [2020-09-25 10:17:16,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@780c2c10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:17:16, skipping insertion in model container [2020-09-25 10:17:16,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:17:16" (3/3) ... [2020-09-25 10:17:16,379 INFO L109 eAbstractionObserver]: Analyzing ICFG SpamAssassin-loop.i [2020-09-25 10:17:16,403 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:17:16,414 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:17:16,434 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:17:16,463 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:17:16,464 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:17:16,464 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:17:16,464 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:17:16,464 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:17:16,464 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:17:16,464 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:17:16,464 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:17:16,490 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-09-25 10:17:16,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-25 10:17:16,498 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:16,499 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:17:16,500 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:16,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:16,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1441743938, now seen corresponding path program 1 times [2020-09-25 10:17:16,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:16,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911080739] [2020-09-25 10:17:16,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:17:16,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:16,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:16,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:16,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 10:17:16,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:16,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-09-25 10:17:16,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:16,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:16,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:17:16,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 10:17:16,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:16,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 10:17:16,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:17:16,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:16,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:16,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:16,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:17:16,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:16,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:17:16,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:16,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:16,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:16,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:16,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:16,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:16,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:17:16,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911080739] [2020-09-25 10:17:16,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:17:16,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:17:16,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106129022] [2020-09-25 10:17:16,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:17:16,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:17:17,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:17:17,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:17:17,008 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 5 states. [2020-09-25 10:17:17,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:17:17,265 INFO L93 Difference]: Finished difference Result 143 states and 210 transitions. [2020-09-25 10:17:17,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:17:17,267 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-09-25 10:17:17,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:17:17,283 INFO L225 Difference]: With dead ends: 143 [2020-09-25 10:17:17,283 INFO L226 Difference]: Without dead ends: 81 [2020-09-25 10:17:17,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:17:17,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-25 10:17:17,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 73. [2020-09-25 10:17:17,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-25 10:17:17,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 91 transitions. [2020-09-25 10:17:17,365 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 91 transitions. Word has length 25 [2020-09-25 10:17:17,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:17:17,365 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 91 transitions. [2020-09-25 10:17:17,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:17:17,366 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 91 transitions. [2020-09-25 10:17:17,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-25 10:17:17,368 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:17,368 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:17:17,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:17:17,369 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:17,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:17,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1406858677, now seen corresponding path program 1 times [2020-09-25 10:17:17,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:17,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268582659] [2020-09-25 10:17:17,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:17:17,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:17,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:17,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:17,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:17,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 10:17:17,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:17:17,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-09-25 10:17:17,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:17,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:17,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:17:17,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 10:17:17,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:17:17,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:17:17,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:17:17,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:17,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:17,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:17,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:17:17,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:17,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:17:17,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:17,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:17,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:17,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:17,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:17,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:17,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:17:17,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268582659] [2020-09-25 10:17:17,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:17:17,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:17:17,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054413063] [2020-09-25 10:17:17,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:17:17,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:17:17,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:17:17,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:17:17,638 INFO L87 Difference]: Start difference. First operand 73 states and 91 transitions. Second operand 5 states. [2020-09-25 10:17:17,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:17:17,818 INFO L93 Difference]: Finished difference Result 85 states and 102 transitions. [2020-09-25 10:17:17,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:17:17,818 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-09-25 10:17:17,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:17:17,823 INFO L225 Difference]: With dead ends: 85 [2020-09-25 10:17:17,823 INFO L226 Difference]: Without dead ends: 83 [2020-09-25 10:17:17,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:17:17,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-09-25 10:17:17,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2020-09-25 10:17:17,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-25 10:17:17,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 97 transitions. [2020-09-25 10:17:17,840 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 97 transitions. Word has length 25 [2020-09-25 10:17:17,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:17:17,843 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 97 transitions. [2020-09-25 10:17:17,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:17:17,843 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 97 transitions. [2020-09-25 10:17:17,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-25 10:17:17,845 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:17,845 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:17:17,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:17:17,845 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:17,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:17,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1771333938, now seen corresponding path program 1 times [2020-09-25 10:17:17,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:17,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1375026721] [2020-09-25 10:17:17,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:17:17,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:17,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:17,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:17,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 10:17:17,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:17,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-25 10:17:17,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:17,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:17,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:17:17,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 10:17:17,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:17:17,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:18,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:17:18,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:18,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:18,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:18,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:17:18,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:18,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:17:18,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:18,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:18,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:18,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:18,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:18,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:18,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:17:18,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:18,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:18,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:18,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:18,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:18,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 10:17:18,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:18,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:18,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:18,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:18,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:18,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:17:18,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:17:18,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1375026721] [2020-09-25 10:17:18,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:17:18,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:17:18,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400438795] [2020-09-25 10:17:18,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:17:18,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:17:18,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:17:18,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:17:18,110 INFO L87 Difference]: Start difference. First operand 81 states and 97 transitions. Second operand 5 states. [2020-09-25 10:17:18,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:17:18,276 INFO L93 Difference]: Finished difference Result 116 states and 145 transitions. [2020-09-25 10:17:18,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 10:17:18,277 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-09-25 10:17:18,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:17:18,279 INFO L225 Difference]: With dead ends: 116 [2020-09-25 10:17:18,279 INFO L226 Difference]: Without dead ends: 114 [2020-09-25 10:17:18,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:17:18,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-25 10:17:18,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 100. [2020-09-25 10:17:18,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-09-25 10:17:18,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 125 transitions. [2020-09-25 10:17:18,298 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 125 transitions. Word has length 30 [2020-09-25 10:17:18,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:17:18,299 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 125 transitions. [2020-09-25 10:17:18,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:17:18,299 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 125 transitions. [2020-09-25 10:17:18,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 10:17:18,301 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:18,303 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:17:18,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:17:18,303 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:18,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:18,304 INFO L82 PathProgramCache]: Analyzing trace with hash 456630219, now seen corresponding path program 1 times [2020-09-25 10:17:18,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:18,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148173284] [2020-09-25 10:17:18,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:17:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:18,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:18,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:18,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 10:17:18,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:18,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-25 10:17:18,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:18,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:18,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:17:18,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 10:17:18,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 10:17:18,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:18,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:17:18,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:18,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:18,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:18,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:17:18,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:18,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:17:18,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:18,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:18,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:18,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:18,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:18,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:18,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:17:18,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:18,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:18,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:18,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:18,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:18,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 10:17:18,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:18,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:18,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:18,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:18,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:18,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:18,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 10:17:18,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:18,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:18,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:18,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:18,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:18,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 10:17:18,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:18,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:18,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:18,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:18,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:18,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:18,532 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 10:17:18,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148173284] [2020-09-25 10:17:18,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:17:18,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 10:17:18,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373452137] [2020-09-25 10:17:18,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:17:18,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:17:18,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:17:18,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:17:18,535 INFO L87 Difference]: Start difference. First operand 100 states and 125 transitions. Second operand 6 states. [2020-09-25 10:17:18,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:17:18,724 INFO L93 Difference]: Finished difference Result 106 states and 130 transitions. [2020-09-25 10:17:18,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:17:18,725 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-09-25 10:17:18,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:17:18,727 INFO L225 Difference]: With dead ends: 106 [2020-09-25 10:17:18,728 INFO L226 Difference]: Without dead ends: 104 [2020-09-25 10:17:18,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:17:18,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-09-25 10:17:18,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-09-25 10:17:18,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-25 10:17:18,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 128 transitions. [2020-09-25 10:17:18,747 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 128 transitions. Word has length 35 [2020-09-25 10:17:18,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:17:18,747 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 128 transitions. [2020-09-25 10:17:18,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:17:18,748 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 128 transitions. [2020-09-25 10:17:18,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 10:17:18,749 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:18,750 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:17:18,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:17:18,750 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:18,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:18,751 INFO L82 PathProgramCache]: Analyzing trace with hash 364478305, now seen corresponding path program 1 times [2020-09-25 10:17:18,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:18,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1647338502] [2020-09-25 10:17:18,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:17:18,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:18,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:18,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:18,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 10:17:18,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:18,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-25 10:17:18,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:18,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:18,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:17:18,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 10:17:18,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 10:17:18,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:18,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:17:18,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:18,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:18,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:18,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:17:18,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:18,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:17:18,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:18,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:18,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:18,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:18,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:18,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:18,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:17:18,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:18,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:18,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:18,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:18,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:18,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 10:17:18,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:18,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:18,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:18,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:18,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:18,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:18,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 10:17:18,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:18,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:18,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:18,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:18,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:18,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 10:17:18,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:18,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:18,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:18,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:18,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:18,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:18,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-09-25 10:17:18,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:18,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:18,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:18,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:18,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:18,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 10:17:18,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:18,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:18,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:18,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:18,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:18,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:18,971 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 10:17:18,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1647338502] [2020-09-25 10:17:18,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:17:18,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:17:18,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992992309] [2020-09-25 10:17:18,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:17:18,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:17:18,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:17:18,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:17:18,974 INFO L87 Difference]: Start difference. First operand 104 states and 128 transitions. Second operand 5 states. [2020-09-25 10:17:19,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:17:19,091 INFO L93 Difference]: Finished difference Result 135 states and 172 transitions. [2020-09-25 10:17:19,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:17:19,091 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-09-25 10:17:19,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:17:19,093 INFO L225 Difference]: With dead ends: 135 [2020-09-25 10:17:19,094 INFO L226 Difference]: Without dead ends: 133 [2020-09-25 10:17:19,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:17:19,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-09-25 10:17:19,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 125. [2020-09-25 10:17:19,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-09-25 10:17:19,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 162 transitions. [2020-09-25 10:17:19,116 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 162 transitions. Word has length 40 [2020-09-25 10:17:19,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:17:19,117 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 162 transitions. [2020-09-25 10:17:19,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:17:19,117 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 162 transitions. [2020-09-25 10:17:19,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 10:17:19,120 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:19,120 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:17:19,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:17:19,120 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:19,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:19,121 INFO L82 PathProgramCache]: Analyzing trace with hash 914533499, now seen corresponding path program 1 times [2020-09-25 10:17:19,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:19,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834631353] [2020-09-25 10:17:19,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:17:19,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:19,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:19,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:19,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:19,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:19,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:20,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:20,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 10:17:20,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:17:20,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1606 [2020-09-25 10:17:20,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:20,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:20,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:17:20,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 10:17:20,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 10:17:20,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:20,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:17:20,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:20,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:20,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:20,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:17:20,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:20,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:17:20,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:20,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:20,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:20,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:20,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:20,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:20,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:17:20,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:20,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:20,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:20,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:20,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:20,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:17:20,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:20,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:20,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:20,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:20,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:20,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:20,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 10:17:20,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:20,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:20,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:20,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:20,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:20,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:17:20,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 10:17:20,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:20,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:20,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:17:20,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:20,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:17:20,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:20,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-09-25 10:17:20,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:20,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:20,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:20,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:20,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:20,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:17:20,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:20,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:20,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:20,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:20,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:20,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:20,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 10:17:20,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:20,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:20,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:20,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:20,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:20,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:17:20,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:20,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:20,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:20,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:20,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:20,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:20,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 10:17:20,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:20,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:20,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:20,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:20,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:20,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 10:17:20,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:20,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:20,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:20,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:20,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:20,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 10:17:21,002 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-09-25 10:17:21,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834631353] [2020-09-25 10:17:21,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:17:21,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:17:21,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341330622] [2020-09-25 10:17:21,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:17:21,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:17:21,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:17:21,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:17:21,006 INFO L87 Difference]: Start difference. First operand 125 states and 162 transitions. Second operand 8 states. [2020-09-25 10:17:21,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:17:21,470 INFO L93 Difference]: Finished difference Result 177 states and 244 transitions. [2020-09-25 10:17:21,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 10:17:21,472 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-09-25 10:17:21,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:17:21,474 INFO L225 Difference]: With dead ends: 177 [2020-09-25 10:17:21,476 INFO L226 Difference]: Without dead ends: 175 [2020-09-25 10:17:21,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:17:21,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-09-25 10:17:21,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 141. [2020-09-25 10:17:21,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-09-25 10:17:21,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 190 transitions. [2020-09-25 10:17:21,520 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 190 transitions. Word has length 58 [2020-09-25 10:17:21,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:17:21,521 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 190 transitions. [2020-09-25 10:17:21,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:17:21,521 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 190 transitions. [2020-09-25 10:17:21,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 10:17:21,529 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:21,532 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:17:21,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 10:17:21,533 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:21,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:21,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1807369608, now seen corresponding path program 1 times [2020-09-25 10:17:21,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:21,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788942679] [2020-09-25 10:17:21,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:17:21,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:21,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:21,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:22,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:22,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:17:22,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:17:22,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 449 [2020-09-25 10:17:22,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:22,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:22,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:17:22,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 10:17:22,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 10:17:22,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:22,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:17:22,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:22,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:22,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:22,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:17:22,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:22,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:17:22,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:22,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:22,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:22,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:22,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:22,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:22,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:17:22,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:22,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:22,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:22,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:22,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:22,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:17:22,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 10:17:22,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:22,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:22,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:17:22,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:22,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:17:22,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:22,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 10:17:22,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:22,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:22,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:22,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:22,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:22,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 10:17:22,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:22,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:22,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:22,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:22,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:22,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:22,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 10:17:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:22,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:22,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:22,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:22,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:22,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 10:17:22,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:22,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:22,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:22,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:22,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:22,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:22,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 10:17:22,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:22,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:22,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:22,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:22,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:22,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 10:17:22,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:22,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:22,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:22,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:22,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:22,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:22,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 10:17:22,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:22,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:22,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:22,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:22,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:22,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 10:17:22,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:22,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:22,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:22,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:22,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:22,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:22,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 10:17:22,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:22,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:22,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:22,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:22,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:22,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 10:17:22,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:22,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:22,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:22,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:22,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:22,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:22,265 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-09-25 10:17:22,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788942679] [2020-09-25 10:17:22,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:17:22,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:17:22,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020721970] [2020-09-25 10:17:22,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:17:22,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:17:22,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:17:22,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:17:22,270 INFO L87 Difference]: Start difference. First operand 141 states and 190 transitions. Second operand 8 states. [2020-09-25 10:17:22,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:17:22,636 INFO L93 Difference]: Finished difference Result 160 states and 216 transitions. [2020-09-25 10:17:22,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 10:17:22,637 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 64 [2020-09-25 10:17:22,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:17:22,639 INFO L225 Difference]: With dead ends: 160 [2020-09-25 10:17:22,639 INFO L226 Difference]: Without dead ends: 158 [2020-09-25 10:17:22,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:17:22,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-09-25 10:17:22,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 141. [2020-09-25 10:17:22,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-09-25 10:17:22,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 190 transitions. [2020-09-25 10:17:22,661 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 190 transitions. Word has length 64 [2020-09-25 10:17:22,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:17:22,661 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 190 transitions. [2020-09-25 10:17:22,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:17:22,662 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 190 transitions. [2020-09-25 10:17:22,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-25 10:17:22,663 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:22,663 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:17:22,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 10:17:22,664 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:22,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:22,664 INFO L82 PathProgramCache]: Analyzing trace with hash 642195662, now seen corresponding path program 1 times [2020-09-25 10:17:22,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:22,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [415337275] [2020-09-25 10:17:22,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:17:22,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:22,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:22,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:22,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:22,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:24,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:24,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 10:17:24,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:17:24,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1536 [2020-09-25 10:17:24,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:24,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:24,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:17:24,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 10:17:24,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 10:17:24,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:24,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:17:24,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:24,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:24,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:24,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:17:24,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:24,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:17:24,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:24,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:24,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:24,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:24,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:24,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:24,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:17:24,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:24,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:24,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:24,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:24,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:24,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:17:24,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:24,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:24,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:24,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:24,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:24,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:24,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 10:17:24,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:24,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:24,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:24,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:24,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:24,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:17:24,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:24,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:24,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:24,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:24,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:24,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:24,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-09-25 10:17:24,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:24,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:24,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:24,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:24,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:24,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:17:24,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:24,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:24,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:24,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:24,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:24,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:24,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 10:17:24,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:24,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:24,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:24,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:24,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:24,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:17:24,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 10:17:24,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:24,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:24,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:17:24,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:24,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:17:24,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:24,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 10:17:24,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:24,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:24,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:24,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:24,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:24,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:17:24,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:24,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:24,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:24,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:24,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:24,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:24,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 10:17:24,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:24,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:24,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:24,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:24,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:24,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:17:24,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:24,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:24,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:24,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:24,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:24,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:24,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-25 10:17:24,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:24,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:24,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:24,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:24,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:24,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 10:17:24,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:24,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:24,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:24,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:24,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:24,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:24,441 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 28 proven. 10 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-09-25 10:17:24,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [415337275] [2020-09-25 10:17:24,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:17:24,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 10:17:24,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140831216] [2020-09-25 10:17:24,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:17:24,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:17:24,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:17:24,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:17:24,444 INFO L87 Difference]: Start difference. First operand 141 states and 190 transitions. Second operand 9 states. [2020-09-25 10:17:24,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:17:24,898 INFO L93 Difference]: Finished difference Result 169 states and 226 transitions. [2020-09-25 10:17:24,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 10:17:24,899 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-09-25 10:17:24,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:17:24,902 INFO L225 Difference]: With dead ends: 169 [2020-09-25 10:17:24,902 INFO L226 Difference]: Without dead ends: 167 [2020-09-25 10:17:24,903 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:17:24,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-09-25 10:17:24,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 136. [2020-09-25 10:17:24,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-09-25 10:17:24,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 180 transitions. [2020-09-25 10:17:24,921 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 180 transitions. Word has length 68 [2020-09-25 10:17:24,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:17:24,921 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 180 transitions. [2020-09-25 10:17:24,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 10:17:24,921 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 180 transitions. [2020-09-25 10:17:24,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 10:17:24,923 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:24,923 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:17:24,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 10:17:24,924 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:24,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:24,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1715909932, now seen corresponding path program 1 times [2020-09-25 10:17:24,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:24,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056135403] [2020-09-25 10:17:24,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:17:24,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:24,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:25,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:25,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:25,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:25,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 10:17:25,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:17:25,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 737 [2020-09-25 10:17:25,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:25,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:25,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:17:25,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 10:17:25,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 10:17:25,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:25,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:17:25,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:25,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:25,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:25,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:17:25,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:25,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:17:25,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:25,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:25,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:25,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:25,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:25,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:25,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:17:25,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:25,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:25,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:25,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:25,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:25,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:17:25,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:25,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:25,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:25,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:25,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:25,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:25,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 10:17:25,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:25,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:25,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:25,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:25,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:25,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:17:25,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:25,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:25,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:25,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:25,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:25,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:25,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 10:17:25,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:25,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:25,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:25,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:25,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:25,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:17:25,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:25,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:25,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:25,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:25,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:25,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:25,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 10:17:25,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:25,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:25,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:25,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:25,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:25,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:17:25,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:25,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:25,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:25,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:25,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:25,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:25,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 10:17:25,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:25,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:25,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:25,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:25,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:25,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:17:25,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:25,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:25,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:25,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:25,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:25,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:25,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 10:17:25,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:25,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:25,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:25,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:25,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:25,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:17:25,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:25,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:25,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:25,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:25,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:25,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:25,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 10:17:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:25,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:25,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:25,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:25,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:25,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:17:25,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:25,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:25,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:25,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:25,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:25,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:25,882 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-09-25 10:17:25,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1056135403] [2020-09-25 10:17:25,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:17:25,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 10:17:25,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221995080] [2020-09-25 10:17:25,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:17:25,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:17:25,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:17:25,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:17:25,892 INFO L87 Difference]: Start difference. First operand 136 states and 180 transitions. Second operand 7 states. [2020-09-25 10:17:26,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:17:26,065 INFO L93 Difference]: Finished difference Result 166 states and 217 transitions. [2020-09-25 10:17:26,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 10:17:26,066 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-09-25 10:17:26,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:17:26,068 INFO L225 Difference]: With dead ends: 166 [2020-09-25 10:17:26,068 INFO L226 Difference]: Without dead ends: 164 [2020-09-25 10:17:26,069 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:17:26,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-09-25 10:17:26,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 150. [2020-09-25 10:17:26,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-09-25 10:17:26,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 197 transitions. [2020-09-25 10:17:26,084 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 197 transitions. Word has length 69 [2020-09-25 10:17:26,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:17:26,085 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 197 transitions. [2020-09-25 10:17:26,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:17:26,085 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 197 transitions. [2020-09-25 10:17:26,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-25 10:17:26,086 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:26,086 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:17:26,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 10:17:26,086 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:26,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:26,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1528474552, now seen corresponding path program 1 times [2020-09-25 10:17:26,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:26,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265338766] [2020-09-25 10:17:26,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:17:26,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:26,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:26,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:26,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-09-25 10:17:26,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:26,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-09-25 10:17:26,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:26,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:26,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:17:26,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 10:17:26,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 10:17:26,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:26,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:17:26,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:26,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:26,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:26,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:17:26,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:26,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:17:26,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:26,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:26,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:26,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:26,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:26,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:26,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:17:26,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:26,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:26,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:26,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:26,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:26,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:17:26,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:26,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:26,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:26,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:26,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:26,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:26,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 10:17:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:26,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:26,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:26,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:26,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:26,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:17:26,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:26,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:26,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:26,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:26,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:26,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:26,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 10:17:26,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:26,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:26,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:26,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:26,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:26,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:17:26,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:26,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:26,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:26,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:26,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:26,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:26,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 10:17:26,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:26,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:26,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:26,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:26,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:26,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:17:26,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:26,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:26,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:26,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:26,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:26,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:26,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 10:17:26,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:26,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:26,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:26,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:26,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:26,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:17:26,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:26,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:26,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:26,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:26,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:26,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:26,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 10:17:26,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:26,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:26,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:26,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:26,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:26,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:17:26,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:26,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:26,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:26,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:26,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:26,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:26,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 10:17:26,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:26,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:26,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:26,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:26,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:26,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:17:26,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:26,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:26,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:26,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:26,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:26,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:26,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 10:17:26,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:26,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:26,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:26,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:26,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:26,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:17:26,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:26,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:26,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:26,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:26,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:26,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:26,498 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-09-25 10:17:26,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1265338766] [2020-09-25 10:17:26,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:17:26,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 10:17:26,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073796997] [2020-09-25 10:17:26,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:17:26,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:17:26,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:17:26,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:17:26,500 INFO L87 Difference]: Start difference. First operand 150 states and 197 transitions. Second operand 8 states. [2020-09-25 10:17:26,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:17:26,703 INFO L93 Difference]: Finished difference Result 156 states and 202 transitions. [2020-09-25 10:17:26,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 10:17:26,704 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 74 [2020-09-25 10:17:26,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:17:26,706 INFO L225 Difference]: With dead ends: 156 [2020-09-25 10:17:26,706 INFO L226 Difference]: Without dead ends: 154 [2020-09-25 10:17:26,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:17:26,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-09-25 10:17:26,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-09-25 10:17:26,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-09-25 10:17:26,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 200 transitions. [2020-09-25 10:17:26,722 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 200 transitions. Word has length 74 [2020-09-25 10:17:26,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:17:26,723 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 200 transitions. [2020-09-25 10:17:26,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:17:26,723 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 200 transitions. [2020-09-25 10:17:26,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 10:17:26,724 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:26,724 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:17:26,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 10:17:26,725 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:26,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:26,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1530703596, now seen corresponding path program 1 times [2020-09-25 10:17:26,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:26,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181188724] [2020-09-25 10:17:26,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:17:26,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:26,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:26,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:27,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:27,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-25 10:17:27,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:17:27,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 391 [2020-09-25 10:17:27,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:27,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:27,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:17:27,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 10:17:27,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 10:17:27,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:27,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:17:27,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:27,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:27,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:27,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:17:27,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:27,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:17:27,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:27,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:27,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:27,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:27,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:27,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:27,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:17:27,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:27,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:27,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:27,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:27,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:27,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:17:27,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:27,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:27,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:27,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:27,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:27,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:27,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 10:17:27,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:27,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:27,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:27,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:27,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:27,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:17:27,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:27,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:27,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:27,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:27,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:27,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:27,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 10:17:27,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:27,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:27,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:27,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:27,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:27,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:17:27,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:27,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:27,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:27,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:27,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:27,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:27,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 10:17:27,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:27,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:27,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:27,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:27,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:27,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:17:27,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:27,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:27,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:27,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:27,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:27,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:27,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 10:17:27,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:27,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:27,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:27,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:27,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:27,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:17:27,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:27,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:27,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:27,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:27,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:27,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:27,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 10:17:27,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:27,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:27,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:27,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:27,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:27,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:17:27,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 10:17:27,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:27,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:27,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:17:27,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:27,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:17:27,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:27,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 10:17:27,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:27,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:27,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:27,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:27,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:27,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 10:17:27,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:27,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:27,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:27,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:27,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:27,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:27,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 10:17:27,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:27,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:27,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:27,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:27,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:27,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:17:27,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:27,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:27,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:27,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:27,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:27,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:27,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 10:17:27,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:27,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:27,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:27,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:27,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:27,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 10:17:27,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:27,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:27,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:27,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:27,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:27,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:17:27,412 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 32 proven. 10 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-09-25 10:17:27,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181188724] [2020-09-25 10:17:27,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:17:27,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:17:27,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427852646] [2020-09-25 10:17:27,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:17:27,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:17:27,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:17:27,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:17:27,416 INFO L87 Difference]: Start difference. First operand 154 states and 200 transitions. Second operand 8 states. [2020-09-25 10:17:27,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:17:27,706 INFO L93 Difference]: Finished difference Result 183 states and 243 transitions. [2020-09-25 10:17:27,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 10:17:27,707 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-09-25 10:17:27,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:17:27,710 INFO L225 Difference]: With dead ends: 183 [2020-09-25 10:17:27,710 INFO L226 Difference]: Without dead ends: 181 [2020-09-25 10:17:27,711 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:17:27,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-09-25 10:17:27,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 154. [2020-09-25 10:17:27,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-09-25 10:17:27,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 200 transitions. [2020-09-25 10:17:27,731 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 200 transitions. Word has length 79 [2020-09-25 10:17:27,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:17:27,731 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 200 transitions. [2020-09-25 10:17:27,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:17:27,732 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 200 transitions. [2020-09-25 10:17:27,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-25 10:17:27,733 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:27,733 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:17:27,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 10:17:27,733 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:27,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:27,734 INFO L82 PathProgramCache]: Analyzing trace with hash -895183749, now seen corresponding path program 1 times [2020-09-25 10:17:27,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:27,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921270132] [2020-09-25 10:17:27,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:17:27,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:27,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:28,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:28,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 10:17:28,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:28,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-09-25 10:17:28,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:28,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:28,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:17:28,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 10:17:28,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 10:17:28,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:28,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:17:28,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:28,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:28,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:28,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:17:28,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:28,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:17:28,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:28,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:28,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:28,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:28,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:28,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:28,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:17:28,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:28,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:28,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:28,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:28,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:28,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 10:17:28,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:28,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:28,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:28,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:28,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:28,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:28,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 10:17:28,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:28,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:28,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:28,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:28,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:28,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:17:28,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:28,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:28,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:28,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:28,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:28,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:28,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 10:17:28,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:28,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:28,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:28,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:28,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:28,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:17:28,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:28,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:28,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:28,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:28,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:28,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:28,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 10:17:28,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:28,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:28,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:28,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:28,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:28,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:17:28,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:28,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:28,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:28,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:28,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:28,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:28,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 10:17:28,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:28,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:28,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:28,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:28,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:28,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 10:17:28,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:28,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:28,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:28,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:28,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:28,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:28,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 10:17:28,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:28,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:28,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:28,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:28,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:28,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:17:28,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:28,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:28,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:28,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:28,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:28,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:28,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 10:17:28,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:28,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:28,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:28,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:28,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:28,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:17:28,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:28,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:28,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:28,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:28,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:28,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:28,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 10:17:28,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:28,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:28,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:28,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:28,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:28,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:17:28,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:28,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:28,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:28,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:28,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:28,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:28,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 10:17:28,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:28,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:28,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:28,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:28,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:28,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 10:17:28,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:28,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:28,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:28,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:28,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:28,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:28,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-25 10:17:28,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:28,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:28,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:28,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:28,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:28,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 10:17:28,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:28,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:28,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:28,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:28,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:28,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:28,408 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-09-25 10:17:28,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921270132] [2020-09-25 10:17:28,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:17:28,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 10:17:28,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156413727] [2020-09-25 10:17:28,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:17:28,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:17:28,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:17:28,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:17:28,411 INFO L87 Difference]: Start difference. First operand 154 states and 200 transitions. Second operand 10 states. [2020-09-25 10:17:28,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:17:28,746 INFO L93 Difference]: Finished difference Result 160 states and 205 transitions. [2020-09-25 10:17:28,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 10:17:28,746 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-09-25 10:17:28,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:17:28,748 INFO L225 Difference]: With dead ends: 160 [2020-09-25 10:17:28,748 INFO L226 Difference]: Without dead ends: 158 [2020-09-25 10:17:28,749 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2020-09-25 10:17:28,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-09-25 10:17:28,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-09-25 10:17:28,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-09-25 10:17:28,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 203 transitions. [2020-09-25 10:17:28,763 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 203 transitions. Word has length 90 [2020-09-25 10:17:28,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:17:28,764 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 203 transitions. [2020-09-25 10:17:28,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 10:17:28,764 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 203 transitions. [2020-09-25 10:17:28,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-09-25 10:17:28,765 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:28,765 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:17:28,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 10:17:28,766 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:28,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:28,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1272604239, now seen corresponding path program 1 times [2020-09-25 10:17:28,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:28,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932053150] [2020-09-25 10:17:28,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:17:28,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:28,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:28,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:28,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:30,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:30,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-25 10:17:30,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:17:30,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1881 [2020-09-25 10:17:30,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:30,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:30,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:17:30,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 10:17:30,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 10:17:30,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:30,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:17:30,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:30,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:30,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:30,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:17:30,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:30,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:17:30,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:30,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:30,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:30,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:30,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:30,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:30,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:17:30,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:30,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:30,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:30,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:30,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:30,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:17:30,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:30,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:30,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:30,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:30,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:30,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:30,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 10:17:30,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:30,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:30,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:30,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:30,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:30,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:17:30,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:30,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:30,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:30,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:30,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:30,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:30,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 10:17:30,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:30,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:30,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:30,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:30,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:30,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:17:30,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:30,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:30,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:30,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:30,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:30,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:30,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 10:17:30,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:30,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:30,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:30,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:30,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:30,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:17:30,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:30,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:30,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:30,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:30,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:30,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:30,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 10:17:30,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:30,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:30,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:30,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:30,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:30,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:17:30,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:30,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:30,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:30,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:30,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:30,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:30,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 10:17:30,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:30,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:30,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:30,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:30,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:30,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:17:30,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:17:30,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:30,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:30,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:17:30,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:30,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:17:30,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:30,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 10:17:30,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:30,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:30,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:30,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:30,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:30,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:17:30,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:30,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:30,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:30,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:30,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:30,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:30,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 10:17:30,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:30,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:30,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:30,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:30,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:30,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:17:30,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:30,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:30,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:30,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:30,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:30,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:30,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 10:17:30,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:30,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:30,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:30,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:30,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:30,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:17:30,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:30,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:30,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:30,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:30,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:30,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:30,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-25 10:17:30,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:30,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:30,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:30,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:30,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:30,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:17:30,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:30,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:30,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:30,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:30,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:30,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:30,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 10:17:30,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:30,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:30,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:30,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:30,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:30,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:17:30,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:30,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:30,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:30,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:30,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:30,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:30,896 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 36 proven. 16 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2020-09-25 10:17:30,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932053150] [2020-09-25 10:17:30,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:17:30,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 10:17:30,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409375828] [2020-09-25 10:17:30,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:17:30,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:17:30,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:17:30,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:17:30,899 INFO L87 Difference]: Start difference. First operand 158 states and 203 transitions. Second operand 10 states. [2020-09-25 10:17:31,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:17:31,215 INFO L93 Difference]: Finished difference Result 189 states and 248 transitions. [2020-09-25 10:17:31,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:17:31,215 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 95 [2020-09-25 10:17:31,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:17:31,220 INFO L225 Difference]: With dead ends: 189 [2020-09-25 10:17:31,220 INFO L226 Difference]: Without dead ends: 187 [2020-09-25 10:17:31,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-09-25 10:17:31,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-09-25 10:17:31,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 158. [2020-09-25 10:17:31,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-09-25 10:17:31,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 203 transitions. [2020-09-25 10:17:31,247 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 203 transitions. Word has length 95 [2020-09-25 10:17:31,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:17:31,247 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 203 transitions. [2020-09-25 10:17:31,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 10:17:31,247 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 203 transitions. [2020-09-25 10:17:31,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-09-25 10:17:31,249 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:31,249 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:17:31,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 10:17:31,249 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:31,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:31,250 INFO L82 PathProgramCache]: Analyzing trace with hash -239051641, now seen corresponding path program 1 times [2020-09-25 10:17:31,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:31,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566131400] [2020-09-25 10:17:31,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:17:31,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:31,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:31,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:31,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:31,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:31,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:31,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:34,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:34,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:36,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:36,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 10:17:36,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:17:36,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 10:17:36,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:36,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:36,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:17:36,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 10:17:36,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 10:17:36,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 10:17:36,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:17:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:36,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:36,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:36,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:17:36,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:36,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:17:36,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:36,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:36,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:36,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:36,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:36,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:36,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:17:36,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:36,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:36,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:36,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:36,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:36,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:17:36,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:36,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:36,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:36,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:36,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:36,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:36,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 10:17:36,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:36,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:36,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:36,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:36,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:36,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:17:36,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:36,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:36,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:36,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:36,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:36,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:36,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-09-25 10:17:36,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:36,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:36,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:36,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:36,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:36,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:17:36,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:36,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:36,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:36,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:36,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:36,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:36,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 10:17:36,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:36,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:36,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:36,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:36,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:36,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:17:36,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:36,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:36,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:36,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:36,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:36,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:36,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 10:17:36,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:36,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:36,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:36,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:36,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:36,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:17:36,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:36,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:36,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:36,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:36,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:36,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:36,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 10:17:36,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:36,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:36,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:36,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:36,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:36,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:17:36,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:17:36,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:36,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:36,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:36,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:36,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:36,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:36,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-09-25 10:17:36,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:36,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:36,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:36,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:36,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:36,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 10:17:36,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:36,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:36,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:36,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:36,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:36,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:36,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-25 10:17:36,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:36,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:36,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:36,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:36,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:36,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:17:36,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:36,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:36,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:17:36,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:17:36,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:36,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:36,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-25 10:17:36,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:36,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:36,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:36,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:36,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:36,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:17:36,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:36,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:36,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:36,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 10:17:36,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:36,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:36,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-09-25 10:17:36,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:36,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:36,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:36,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:36,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:36,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:17:36,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:36,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:36,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:36,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 10:17:36,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:36,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:36,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-25 10:17:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:36,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:36,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:36,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:36,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:36,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:17:36,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:36,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:36,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:36,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 10:17:36,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:36,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:36,508 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 43 proven. 11 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2020-09-25 10:17:36,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566131400] [2020-09-25 10:17:36,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:17:36,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 10:17:36,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60604256] [2020-09-25 10:17:36,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:17:36,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:17:36,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:17:36,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:17:36,511 INFO L87 Difference]: Start difference. First operand 158 states and 203 transitions. Second operand 7 states. [2020-09-25 10:17:36,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:17:36,795 INFO L93 Difference]: Finished difference Result 292 states and 382 transitions. [2020-09-25 10:17:36,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 10:17:36,795 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-09-25 10:17:36,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:17:36,797 INFO L225 Difference]: With dead ends: 292 [2020-09-25 10:17:36,797 INFO L226 Difference]: Without dead ends: 164 [2020-09-25 10:17:36,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:17:36,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-09-25 10:17:36,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 157. [2020-09-25 10:17:36,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-09-25 10:17:36,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 200 transitions. [2020-09-25 10:17:36,817 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 200 transitions. Word has length 97 [2020-09-25 10:17:36,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:17:36,817 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 200 transitions. [2020-09-25 10:17:36,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:17:36,817 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 200 transitions. [2020-09-25 10:17:36,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-09-25 10:17:36,821 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:36,822 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:17:36,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 10:17:36,822 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:36,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:36,822 INFO L82 PathProgramCache]: Analyzing trace with hash -960498755, now seen corresponding path program 1 times [2020-09-25 10:17:36,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:36,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044624905] [2020-09-25 10:17:36,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:17:36,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:36,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:36,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:36,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:37,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:37,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:41,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:41,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 10:17:41,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:17:41,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 10:17:41,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:41,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:41,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:17:41,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 10:17:41,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 10:17:41,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:41,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:17:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:41,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:41,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:41,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:17:41,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:41,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:17:41,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:41,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:41,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:41,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:41,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:41,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:41,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:17:41,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:41,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:41,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:41,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:41,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:41,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:17:41,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:41,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:41,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:41,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:41,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:41,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:41,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 10:17:41,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:41,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:41,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:41,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:41,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:41,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:17:41,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:17:41,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:41,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:41,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:17:41,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:41,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:17:41,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:41,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 10:17:41,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:41,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:41,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:41,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:41,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:41,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:17:41,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:41,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:41,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:41,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:41,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:41,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:41,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 10:17:41,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:41,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:41,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:41,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:41,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:41,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:17:41,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:17:41,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:41,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:41,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:17:41,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:41,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:17:41,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:41,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 10:17:41,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:41,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:41,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:41,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:41,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:41,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:17:41,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:41,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:41,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:41,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:41,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:41,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:41,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 10:17:41,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:41,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:41,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:41,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:41,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:41,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:17:41,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:41,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:41,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:41,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:41,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:41,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:41,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-09-25 10:17:41,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:41,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:42,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:42,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:42,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:42,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:17:42,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:42,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:42,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:42,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:42,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:42,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:42,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-25 10:17:42,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:42,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:42,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:42,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:42,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:42,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:17:42,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:42,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:42,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:42,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:42,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:42,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:42,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-25 10:17:42,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:42,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:42,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:42,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:42,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:42,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:17:42,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:42,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:42,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:42,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:42,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:42,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:42,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-25 10:17:42,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:42,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:42,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:42,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:42,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:42,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:17:42,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:42,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:42,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:42,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:42,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:42,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:42,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-25 10:17:42,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:42,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:42,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:42,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:42,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:42,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:17:42,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:42,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:42,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:42,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:42,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:42,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:42,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 10:17:42,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:42,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:42,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:42,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:42,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:42,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:17:42,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:42,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:42,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:42,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:42,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:42,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:42,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-09-25 10:17:42,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:42,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:42,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:42,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:42,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:42,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:17:42,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:42,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:42,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:42,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:42,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:42,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:42,081 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 39 proven. 59 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2020-09-25 10:17:42,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044624905] [2020-09-25 10:17:42,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:17:42,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 10:17:42,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860721965] [2020-09-25 10:17:42,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:17:42,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:17:42,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:17:42,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:17:42,083 INFO L87 Difference]: Start difference. First operand 157 states and 200 transitions. Second operand 9 states. [2020-09-25 10:17:42,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:17:42,464 INFO L93 Difference]: Finished difference Result 195 states and 251 transitions. [2020-09-25 10:17:42,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 10:17:42,465 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 110 [2020-09-25 10:17:42,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:17:42,467 INFO L225 Difference]: With dead ends: 195 [2020-09-25 10:17:42,467 INFO L226 Difference]: Without dead ends: 193 [2020-09-25 10:17:42,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:17:42,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-09-25 10:17:42,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 172. [2020-09-25 10:17:42,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-09-25 10:17:42,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 222 transitions. [2020-09-25 10:17:42,483 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 222 transitions. Word has length 110 [2020-09-25 10:17:42,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:17:42,484 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 222 transitions. [2020-09-25 10:17:42,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 10:17:42,484 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 222 transitions. [2020-09-25 10:17:42,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-09-25 10:17:42,488 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:42,488 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:17:42,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 10:17:42,488 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:42,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:42,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1038471395, now seen corresponding path program 1 times [2020-09-25 10:17:42,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:42,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781482958] [2020-09-25 10:17:42,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:17:42,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:42,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:42,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:42,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:42,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:47,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:47,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 10:17:47,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:17:47,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 10:17:47,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:47,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:47,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:17:47,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 10:17:47,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 10:17:47,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:47,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:17:47,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:47,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:47,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:47,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:17:47,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:47,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:17:47,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:47,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:47,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:47,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:47,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:47,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:47,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:17:47,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:47,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:47,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:47,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:47,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:47,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:17:47,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:47,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:47,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:47,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:47,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:47,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:47,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 10:17:47,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:47,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:47,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:47,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:47,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:47,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:17:47,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:17:47,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:47,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:47,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:17:47,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:47,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:17:47,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:47,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 10:17:47,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:47,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:47,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:47,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:47,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:47,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 10:17:47,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:47,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:47,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:47,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:47,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:47,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:17:47,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 10:17:47,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:47,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:47,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:47,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:47,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:47,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:17:47,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 10:17:47,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:47,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:47,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:17:47,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:47,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:17:47,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:47,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 10:17:47,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:47,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:47,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:47,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:47,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:47,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:17:47,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:47,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:47,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:47,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:47,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:47,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:47,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 10:17:47,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:47,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:47,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:47,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:47,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:47,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:17:47,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:47,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:47,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:47,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:47,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:47,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:47,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 10:17:47,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:47,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:47,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:47,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:47,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:47,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:17:47,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:47,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:47,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:47,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:47,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:47,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:47,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 10:17:47,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:47,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:47,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:47,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:47,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:47,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 10:17:47,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:47,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:47,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:47,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:47,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:47,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:47,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 10:17:47,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:47,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:47,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:47,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:47,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:47,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:17:47,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:47,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:47,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:47,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:47,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:47,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:47,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-25 10:17:47,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:47,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:47,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:47,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:47,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:47,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:17:47,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:47,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:47,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:47,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:47,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:47,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:47,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 10:17:47,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:47,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:47,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:47,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:47,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:47,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:17:47,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:47,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:47,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:47,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:47,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:47,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:47,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-09-25 10:17:47,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:47,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:47,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:47,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:47,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:47,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:17:47,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:47,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:47,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:47,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:47,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:47,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:47,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-09-25 10:17:47,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:47,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:47,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:47,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:47,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:47,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:17:47,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:47,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:47,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:47,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:47,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:47,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:47,881 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 37 proven. 60 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2020-09-25 10:17:47,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [781482958] [2020-09-25 10:17:47,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:17:47,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:17:47,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013680665] [2020-09-25 10:17:47,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:17:47,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:17:47,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:17:47,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:17:47,888 INFO L87 Difference]: Start difference. First operand 172 states and 222 transitions. Second operand 11 states. [2020-09-25 10:17:48,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:17:48,463 INFO L93 Difference]: Finished difference Result 189 states and 244 transitions. [2020-09-25 10:17:48,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 10:17:48,463 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 110 [2020-09-25 10:17:48,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:17:48,465 INFO L225 Difference]: With dead ends: 189 [2020-09-25 10:17:48,465 INFO L226 Difference]: Without dead ends: 187 [2020-09-25 10:17:48,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:17:48,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-09-25 10:17:48,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 148. [2020-09-25 10:17:48,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-09-25 10:17:48,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 184 transitions. [2020-09-25 10:17:48,482 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 184 transitions. Word has length 110 [2020-09-25 10:17:48,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:17:48,483 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 184 transitions. [2020-09-25 10:17:48,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:17:48,483 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 184 transitions. [2020-09-25 10:17:48,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-09-25 10:17:48,486 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:48,486 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:17:48,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 10:17:48,487 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:48,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:48,487 INFO L82 PathProgramCache]: Analyzing trace with hash 871752502, now seen corresponding path program 1 times [2020-09-25 10:17:48,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:48,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614694557] [2020-09-25 10:17:48,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:17:48,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:48,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:48,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:48,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:48,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:53,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:53,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 10:17:53,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:17:53,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 10:17:53,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:53,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:53,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:17:53,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 10:17:53,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-25 10:17:53,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:53,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:17:53,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:53,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:53,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:53,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:17:53,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:53,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:17:53,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:53,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:53,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:53,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:53,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:53,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:53,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:17:53,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:53,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:53,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:53,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:53,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:53,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:17:53,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:53,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:53,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:53,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:53,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:53,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:53,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 10:17:53,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:53,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:53,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:53,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:53,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:53,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:17:53,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:53,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:53,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:53,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:53,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:53,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:53,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 10:17:53,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:53,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:53,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:53,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:53,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:53,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:17:53,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:53,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:53,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:53,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:53,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:53,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:53,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 10:17:53,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:53,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:53,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:53,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:53,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:53,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:17:53,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:53,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:53,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:53,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:53,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:53,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:53,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 10:17:53,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:53,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:53,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:53,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:53,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:53,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:17:53,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:53,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:53,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:53,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:53,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:53,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:53,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 10:17:53,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:53,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:53,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:53,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:53,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:53,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:17:53,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:17:53,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:53,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:53,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:17:53,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:53,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:17:53,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:53,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 10:17:53,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:53,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:53,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:53,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:53,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:53,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:17:53,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:53,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:53,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:53,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:53,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:53,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:53,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 10:17:53,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:53,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:53,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:53,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:53,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:53,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:17:53,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:53,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:53,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:53,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:53,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:53,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:53,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 10:17:53,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:53,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:53,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:53,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:53,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:53,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:17:53,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:53,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:53,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:53,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:53,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:53,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:53,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-25 10:17:53,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:53,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:53,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:53,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:53,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:53,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:17:53,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:53,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:53,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:53,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:53,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:53,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:53,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 10:17:53,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:53,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:53,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:53,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:53,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:53,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:17:53,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:53,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:53,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:53,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:53,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:53,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:53,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-09-25 10:17:53,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:53,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:53,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:53,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:53,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:53,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:17:53,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:53,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:53,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:53,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:53,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:53,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:53,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-09-25 10:17:53,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:53,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:53,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:53,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:53,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:53,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:17:53,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:53,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:53,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:53,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:53,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:53,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:53,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-25 10:17:53,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:53,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:53,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:53,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:53,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:53,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:17:53,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:53,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:53,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:53,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:53,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:53,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:53,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-25 10:17:53,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:53,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:53,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:53,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:53,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:53,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:17:53,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:53,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:53,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:53,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:53,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:53,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:53,834 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 46 proven. 28 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2020-09-25 10:17:53,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614694557] [2020-09-25 10:17:53,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:17:53,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 10:17:53,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213278827] [2020-09-25 10:17:53,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 10:17:53,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:17:53,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 10:17:53,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:17:53,837 INFO L87 Difference]: Start difference. First operand 148 states and 184 transitions. Second operand 13 states. [2020-09-25 10:17:54,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:17:54,377 INFO L93 Difference]: Finished difference Result 183 states and 231 transitions. [2020-09-25 10:17:54,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 10:17:54,378 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 120 [2020-09-25 10:17:54,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:17:54,378 INFO L225 Difference]: With dead ends: 183 [2020-09-25 10:17:54,378 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 10:17:54,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2020-09-25 10:17:54,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 10:17:54,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 10:17:54,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 10:17:54,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 10:17:54,383 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 120 [2020-09-25 10:17:54,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:17:54,384 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 10:17:54,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 10:17:54,384 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 10:17:54,384 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 10:17:54,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 10:17:54,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 10:17:54,567 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2020-09-25 10:17:54,711 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2020-09-25 10:17:54,875 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2020-09-25 10:17:55,047 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2020-09-25 10:17:55,667 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 16 [2020-09-25 10:17:55,801 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 18 [2020-09-25 10:17:56,097 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 17 [2020-09-25 10:17:56,412 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 17 [2020-09-25 10:17:56,627 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 19 [2020-09-25 10:17:56,800 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 19 [2020-09-25 10:17:57,022 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 19 [2020-09-25 10:17:57,107 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 10:17:57,107 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 10:17:57,107 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 10:17:57,107 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 10:17:57,107 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 10:17:57,108 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 10:17:57,108 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-25 10:17:57,108 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-25 10:17:57,108 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-25 10:17:57,108 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-25 10:17:57,108 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-25 10:17:57,108 INFO L264 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (and (<= (+ main_~j~0 5) main_~bufsize~0) (<= 0 main_~j~0) (<= 0 main_~i~0) (< (+ main_~i~0 1) main_~len~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2020-09-25 10:17:57,108 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-25 10:17:57,108 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 56) no Hoare annotation was computed. [2020-09-25 10:17:57,109 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-25 10:17:57,109 INFO L264 CegarLoopResult]: At program point L23-3(lines 23 54) the Hoare annotation is: (let ((.cse0 (<= (+ main_~limit~0 4) main_~bufsize~0))) (or (and (<= 0 main_~j~0) (<= 1 main_~i~0) .cse0) (and (<= 2 main_~i~0) .cse0) (and (= main_~i~0 0) .cse0))) [2020-09-25 10:17:57,109 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 10:17:57,109 INFO L268 CegarLoopResult]: For program point L23-4(lines 23 54) no Hoare annotation was computed. [2020-09-25 10:17:57,109 INFO L268 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-09-25 10:17:57,109 INFO L268 CegarLoopResult]: For program point L19-2(line 19) no Hoare annotation was computed. [2020-09-25 10:17:57,109 INFO L264 CegarLoopResult]: At program point L48(line 48) the Hoare annotation is: (and (<= (+ main_~j~0 5) main_~bufsize~0) (<= 0 main_~j~0) (< main_~i~0 main_~len~0) (<= 0 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2020-09-25 10:17:57,110 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-09-25 10:17:57,110 INFO L268 CegarLoopResult]: For program point L40-1(line 40) no Hoare annotation was computed. [2020-09-25 10:17:57,110 INFO L268 CegarLoopResult]: For program point L40-2(line 40) no Hoare annotation was computed. [2020-09-25 10:17:57,110 INFO L264 CegarLoopResult]: At program point L36(line 36) the Hoare annotation is: (and (<= 1 main_~j~0) (< main_~i~0 main_~len~0) (<= 1 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0) (<= (+ main_~j~0 4) main_~bufsize~0)) [2020-09-25 10:17:57,110 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-09-25 10:17:57,110 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-25 10:17:57,110 INFO L268 CegarLoopResult]: For program point L28-1(line 28) no Hoare annotation was computed. [2020-09-25 10:17:57,110 INFO L268 CegarLoopResult]: For program point L28-3(line 28) no Hoare annotation was computed. [2020-09-25 10:17:57,111 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-25 10:17:57,111 INFO L264 CegarLoopResult]: At program point L24-3(lines 24 53) the Hoare annotation is: (let ((.cse0 (<= (+ main_~limit~0 4) main_~bufsize~0))) (or (and (<= 1 main_~j~0) (<= 1 main_~i~0) .cse0) (and (<= 0 main_~j~0) (< main_~i~0 main_~len~0) (<= 0 main_~i~0) .cse0))) [2020-09-25 10:17:57,111 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-25 10:17:57,111 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-09-25 10:17:57,111 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-09-25 10:17:57,111 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 10:17:57,111 INFO L264 CegarLoopResult]: At program point L45(lines 25 52) the Hoare annotation is: (and (<= (+ main_~j~0 5) main_~bufsize~0) (<= 0 main_~j~0) (< main_~i~0 main_~len~0) (<= 0 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2020-09-25 10:17:57,112 INFO L264 CegarLoopResult]: At program point L41(line 41) the Hoare annotation is: (and (<= (+ main_~j~0 3) main_~bufsize~0) (<= 2 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0) (<= 2 main_~j~0)) [2020-09-25 10:17:57,112 INFO L264 CegarLoopResult]: At program point L41-1(line 41) the Hoare annotation is: (and (<= (+ main_~j~0 3) main_~bufsize~0) (<= 2 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0) (<= 2 main_~j~0)) [2020-09-25 10:17:57,112 INFO L264 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (and (<= 1 main_~j~0) (< main_~i~0 main_~len~0) (<= 1 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0) (<= (+ main_~j~0 4) main_~bufsize~0)) [2020-09-25 10:17:57,112 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-25 10:17:57,112 INFO L268 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-09-25 10:17:57,112 INFO L264 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (and (<= (+ main_~j~0 5) main_~bufsize~0) (<= 0 main_~j~0) (<= 0 main_~i~0) (< (+ main_~i~0 1) main_~len~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2020-09-25 10:17:57,113 INFO L264 CegarLoopResult]: At program point L29-1(line 29) the Hoare annotation is: (and (<= (+ main_~j~0 5) main_~bufsize~0) (<= 0 main_~j~0) (<= 0 main_~i~0) (< (+ main_~i~0 1) main_~len~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2020-09-25 10:17:57,113 INFO L268 CegarLoopResult]: For program point L25(lines 25 52) no Hoare annotation was computed. [2020-09-25 10:17:57,113 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-25 10:17:57,113 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-09-25 10:17:57,113 INFO L268 CegarLoopResult]: For program point L21-2(line 21) no Hoare annotation was computed. [2020-09-25 10:17:57,113 INFO L268 CegarLoopResult]: For program point L50(line 50) no Hoare annotation was computed. [2020-09-25 10:17:57,113 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 10:17:57,113 INFO L268 CegarLoopResult]: For program point L50-1(line 50) no Hoare annotation was computed. [2020-09-25 10:17:57,114 INFO L264 CegarLoopResult]: At program point L46(line 46) the Hoare annotation is: (and (<= (+ main_~j~0 5) main_~bufsize~0) (<= 0 main_~j~0) (< main_~i~0 main_~len~0) (<= 0 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2020-09-25 10:17:57,114 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 56) no Hoare annotation was computed. [2020-09-25 10:17:57,114 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-09-25 10:17:57,114 INFO L268 CegarLoopResult]: For program point L38(line 38) no Hoare annotation was computed. [2020-09-25 10:17:57,114 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-09-25 10:17:57,114 INFO L268 CegarLoopResult]: For program point L34-1(line 34) no Hoare annotation was computed. [2020-09-25 10:17:57,114 INFO L268 CegarLoopResult]: For program point L34-2(line 34) no Hoare annotation was computed. [2020-09-25 10:17:57,114 INFO L264 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (and (<= (+ main_~j~0 5) main_~bufsize~0) (<= 0 main_~j~0) (<= 0 main_~i~0) (< (+ main_~i~0 1) main_~len~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2020-09-25 10:17:57,115 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 56) the Hoare annotation is: true [2020-09-25 10:17:57,115 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (and (<= (+ main_~j~0 5) main_~bufsize~0) (<= 0 main_~j~0) (<= 0 main_~i~0) (< (+ main_~i~0 1) main_~len~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2020-09-25 10:17:57,115 INFO L264 CegarLoopResult]: At program point L26-1(line 26) the Hoare annotation is: (and (<= (+ main_~j~0 5) main_~bufsize~0) (<= 0 main_~j~0) (<= 0 main_~i~0) (< (+ main_~i~0 1) main_~len~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2020-09-25 10:17:57,115 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 10:17:57,115 INFO L268 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed. [2020-09-25 10:17:57,115 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-25 10:17:57,115 INFO L268 CegarLoopResult]: For program point L51-1(line 51) no Hoare annotation was computed. [2020-09-25 10:17:57,115 INFO L268 CegarLoopResult]: For program point L51-2(line 51) no Hoare annotation was computed. [2020-09-25 10:17:57,116 INFO L264 CegarLoopResult]: At program point L47(line 47) the Hoare annotation is: (and (<= (+ main_~j~0 5) main_~bufsize~0) (<= 0 main_~j~0) (< main_~i~0 main_~len~0) (<= 0 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2020-09-25 10:17:57,116 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-09-25 10:17:57,116 INFO L268 CegarLoopResult]: For program point L43-1(line 43) no Hoare annotation was computed. [2020-09-25 10:17:57,116 INFO L268 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-09-25 10:17:57,116 INFO L268 CegarLoopResult]: For program point L39-1(line 39) no Hoare annotation was computed. [2020-09-25 10:17:57,116 INFO L264 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: (and (<= 1 main_~j~0) (<= 1 main_~i~0) (< main_~i~0 main_~len~0) (<= (+ main_~limit~0 4) main_~bufsize~0) (<= (+ main_~j~0 4) main_~bufsize~0)) [2020-09-25 10:17:57,116 INFO L264 CegarLoopResult]: At program point L35-1(line 35) the Hoare annotation is: (and (<= 1 main_~j~0) (<= 1 main_~i~0) (< main_~i~0 main_~len~0) (<= (+ main_~limit~0 4) main_~bufsize~0) (<= (+ main_~j~0 4) main_~bufsize~0)) [2020-09-25 10:17:57,116 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-25 10:17:57,117 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-25 10:17:57,117 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 10:17:57,117 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-25 10:17:57,117 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-25 10:17:57,117 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-25 10:17:57,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 10:17:57 BoogieIcfgContainer [2020-09-25 10:17:57,145 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 10:17:57,148 INFO L168 Benchmark]: Toolchain (without parser) took 41718.59 ms. Allocated memory was 147.3 MB in the beginning and 432.0 MB in the end (delta: 284.7 MB). Free memory was 103.7 MB in the beginning and 284.9 MB in the end (delta: -181.3 MB). Peak memory consumption was 290.6 MB. Max. memory is 7.1 GB. [2020-09-25 10:17:57,149 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 10:17:57,150 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.26 ms. Allocated memory is still 147.3 MB. Free memory was 103.0 MB in the beginning and 93.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-09-25 10:17:57,151 INFO L168 Benchmark]: Boogie Preprocessor took 144.35 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 93.0 MB in the beginning and 182.0 MB in the end (delta: -89.0 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-09-25 10:17:57,152 INFO L168 Benchmark]: RCFGBuilder took 447.03 ms. Allocated memory is still 203.9 MB. Free memory was 182.0 MB in the beginning and 163.2 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. [2020-09-25 10:17:57,152 INFO L168 Benchmark]: TraceAbstraction took 40775.13 ms. Allocated memory was 203.9 MB in the beginning and 432.0 MB in the end (delta: 228.1 MB). Free memory was 163.2 MB in the beginning and 284.9 MB in the end (delta: -121.7 MB). Peak memory consumption was 293.5 MB. Max. memory is 7.1 GB. [2020-09-25 10:17:57,158 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 335.26 ms. Allocated memory is still 147.3 MB. Free memory was 103.0 MB in the beginning and 93.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 144.35 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 93.0 MB in the beginning and 182.0 MB in the end (delta: -89.0 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 447.03 ms. Allocated memory is still 203.9 MB. Free memory was 182.0 MB in the beginning and 163.2 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 40775.13 ms. Allocated memory was 203.9 MB in the beginning and 432.0 MB in the end (delta: 228.1 MB). Free memory was 163.2 MB in the beginning and 284.9 MB in the end (delta: -121.7 MB). Peak memory consumption was 293.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (((j + 5 <= bufsize && 0 <= j) && i < len) && 0 <= i) && limit + 4 <= bufsize - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (((0 <= j && 1 <= i) && limit + 4 <= bufsize) || (2 <= i && limit + 4 <= bufsize)) || (i == 0 && limit + 4 <= bufsize) - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: ((1 <= j && 1 <= i) && limit + 4 <= bufsize) || (((0 <= j && i < len) && 0 <= i) && limit + 4 <= bufsize) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 37.9s, OverallIterations: 17, TraceHistogramMax: 16, AutomataDifference: 5.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1356 SDtfs, 582 SDslu, 5471 SDs, 0 SdLazy, 3879 SolverSat, 287 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 471 GetRequests, 303 SyntacticMatches, 6 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=172occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 17 MinimizatonAttempts, 251 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 23 LocationsWithAnnotation, 128 PreInvPairs, 198 NumberOfFragments, 390 HoareAnnotationTreeSize, 128 FomulaSimplifications, 51939 FormulaSimplificationTreeSizeReduction, 1.1s HoareSimplificationTime, 23 FomulaSimplificationsInter, 53662 FormulaSimplificationTreeSizeReductionInter, 1.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 31.4s InterpolantComputationTime, 1189 NumberOfCodeBlocks, 1189 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 1172 ConstructedInterpolants, 0 QuantifiedInterpolants, 185320 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 17 InterpolantComputations, 8 PerfectInterpolantSequences, 2248/2468 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...