/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector/soft_float_5a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:52:04,774 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:52:04,778 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:52:04,821 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:52:04,821 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:52:04,829 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:52:04,831 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:52:04,835 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:52:04,838 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:52:04,841 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:52:04,842 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:52:04,843 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:52:04,844 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:52:04,847 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:52:04,849 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:52:04,851 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:52:04,853 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:52:04,855 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:52:04,857 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:52:04,866 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:52:04,868 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:52:04,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:52:04,871 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:52:04,872 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:52:04,890 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:52:04,890 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:52:04,890 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:52:04,892 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:52:04,892 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:52:04,895 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:52:04,896 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:52:04,897 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:52:04,898 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:52:04,902 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:52:04,906 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:52:04,906 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:52:04,907 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:52:04,908 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:52:04,908 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:52:04,909 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:52:04,910 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:52:04,911 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 08:52:04,942 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:52:04,942 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:52:04,943 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:52:04,944 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:52:04,944 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:52:04,944 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:52:04,944 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:52:04,945 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:52:04,945 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:52:04,945 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:52:04,945 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:52:04,945 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:52:04,946 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:52:04,946 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:52:04,946 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:52:04,946 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:52:04,946 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:52:04,947 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:52:04,947 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:52:04,947 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:52:04,947 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:52:04,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:52:04,948 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:52:04,948 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:52:04,948 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:52:04,948 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:52:04,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:52:04,949 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:52:04,949 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:52:04,949 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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 08:52:05,491 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:52:05,516 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:52:05,521 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:52:05,523 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:52:05,525 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:52:05,526 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_5a.c.cil.c [2020-09-25 08:52:05,610 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/05a5cae6c/0f51f269c84b49bca763abe066bd7eae/FLAGebe408d51 [2020-09-25 08:52:06,132 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:52:06,134 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/soft_float_5a.c.cil.c [2020-09-25 08:52:06,156 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/05a5cae6c/0f51f269c84b49bca763abe066bd7eae/FLAGebe408d51 [2020-09-25 08:52:06,430 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/05a5cae6c/0f51f269c84b49bca763abe066bd7eae [2020-09-25 08:52:06,446 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:52:06,452 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:52:06,456 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:52:06,457 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:52:06,461 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:52:06,462 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:52:06" (1/1) ... [2020-09-25 08:52:06,467 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@377d8449 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:06, skipping insertion in model container [2020-09-25 08:52:06,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:52:06" (1/1) ... [2020-09-25 08:52:06,477 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:52:06,538 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:52:06,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:52:06,802 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:52:06,850 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:52:06,959 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:52:06,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:06 WrapperNode [2020-09-25 08:52:06,961 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:52:06,962 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:52:06,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:52:06,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:52:06,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:06" (1/1) ... [2020-09-25 08:52:06,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:06" (1/1) ... [2020-09-25 08:52:06,988 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:06" (1/1) ... [2020-09-25 08:52:06,993 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:06" (1/1) ... [2020-09-25 08:52:07,005 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:06" (1/1) ... [2020-09-25 08:52:07,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:06" (1/1) ... [2020-09-25 08:52:07,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:06" (1/1) ... [2020-09-25 08:52:07,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:52:07,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:52:07,023 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:52:07,023 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:52:07,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:06" (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 08:52:07,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:52:07,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:52:07,099 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 08:52:07,099 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2020-09-25 08:52:07,099 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2020-09-25 08:52:07,099 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2020-09-25 08:52:07,100 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:52:07,100 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:52:07,100 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 08:52:07,100 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-25 08:52:07,100 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 08:52:07,100 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2020-09-25 08:52:07,101 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2020-09-25 08:52:07,101 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2020-09-25 08:52:07,101 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:52:07,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:52:07,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:52:07,662 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:52:07,662 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 08:52:07,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:52:07 BoogieIcfgContainer [2020-09-25 08:52:07,670 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:52:07,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:52:07,671 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:52:07,675 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:52:07,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:52:06" (1/3) ... [2020-09-25 08:52:07,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@552e2c3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:52:07, skipping insertion in model container [2020-09-25 08:52:07,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:06" (2/3) ... [2020-09-25 08:52:07,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@552e2c3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:52:07, skipping insertion in model container [2020-09-25 08:52:07,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:52:07" (3/3) ... [2020-09-25 08:52:07,680 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_5a.c.cil.c [2020-09-25 08:52:07,692 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:52:07,703 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:52:07,723 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:52:07,751 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:52:07,752 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:52:07,752 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:52:07,752 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:52:07,752 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:52:07,752 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:52:07,752 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:52:07,752 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:52:07,778 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states. [2020-09-25 08:52:07,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-09-25 08:52:07,791 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:07,792 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:52:07,793 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:07,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:07,800 INFO L82 PathProgramCache]: Analyzing trace with hash -2062280112, now seen corresponding path program 1 times [2020-09-25 08:52:07,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:07,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669084489] [2020-09-25 08:52:07,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:07,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:08,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:08,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:08,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:08,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:09,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:09,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 08:52:09,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:52:09,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1641 [2020-09-25 08:52:09,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:09,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:09,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:52:09,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-09-25 08:52:09,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 08:52:09,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 08:52:09,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:09,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:09,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:09,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:09,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:09,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:09,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:52:09,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:09,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:09,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:09,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:09,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:09,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:52:09,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 08:52:09,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:09,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:09,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:09,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:09,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:09,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:52:09,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:09,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:09,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:09,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:09,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:09,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:09,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 08:52:09,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:09,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:09,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:09,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:09,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:09,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:52:09,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 08:52:09,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:09,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:09,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:09,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:09,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:09,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:09,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 08:52:09,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:09,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:09,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:09,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:09,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:09,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:52:09,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:09,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:09,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:09,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:09,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:09,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:09,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 08:52:09,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:09,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:09,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:09,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:09,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:09,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:52:09,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:09,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:09,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:09,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:09,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:09,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:09,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-25 08:52:09,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:09,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:09,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:09,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 08:52:09,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:09,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:52:09,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:09,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:09,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:52:09,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:09,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 08:52:09,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:09,816 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-09-25 08:52:09,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669084489] [2020-09-25 08:52:09,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:52:09,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:52:09,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483615534] [2020-09-25 08:52:09,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:52:09,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:09,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:52:09,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:52:09,852 INFO L87 Difference]: Start difference. First operand 152 states. Second operand 3 states. [2020-09-25 08:52:09,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:09,936 INFO L93 Difference]: Finished difference Result 253 states and 309 transitions. [2020-09-25 08:52:09,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:52:09,938 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2020-09-25 08:52:09,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:09,962 INFO L225 Difference]: With dead ends: 253 [2020-09-25 08:52:09,962 INFO L226 Difference]: Without dead ends: 126 [2020-09-25 08:52:09,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:52:09,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-09-25 08:52:10,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-09-25 08:52:10,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-09-25 08:52:10,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 144 transitions. [2020-09-25 08:52:10,066 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 144 transitions. Word has length 100 [2020-09-25 08:52:10,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:10,084 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 144 transitions. [2020-09-25 08:52:10,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:52:10,084 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 144 transitions. [2020-09-25 08:52:10,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-09-25 08:52:10,095 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:10,096 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:52:10,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:52:10,096 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:10,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:10,097 INFO L82 PathProgramCache]: Analyzing trace with hash -2043535721, now seen corresponding path program 1 times [2020-09-25 08:52:10,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:10,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1259606751] [2020-09-25 08:52:10,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:10,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:10,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:10,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:10,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:10,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:13,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:13,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:13,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:13,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:13,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:15,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:15,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-25 08:52:15,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 08:52:15,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 08:52:15,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:15,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:15,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:52:15,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 08:52:15,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 08:52:15,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:15,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:15,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:15,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:15,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:15,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:15,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:15,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:52:15,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:15,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:15,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:15,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:15,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:15,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:15,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 08:52:15,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:15,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:15,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:15,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:15,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:15,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:52:15,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:15,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:15,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:52:15,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:15,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:52:15,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:15,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 08:52:15,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:15,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:15,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:15,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:15,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:15,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:52:15,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 08:52:15,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:15,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:15,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:52:15,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:15,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:52:15,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:15,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 08:52:15,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:15,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:15,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:15,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:15,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:15,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:52:15,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:15,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:15,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:52:15,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:15,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:52:15,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:15,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 08:52:15,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:15,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:15,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:15,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:15,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:15,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:52:15,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:15,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:15,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:52:15,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:15,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:52:15,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:15,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-25 08:52:15,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:15,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:15,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:15,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 08:52:15,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:15,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 08:52:15,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:15,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:15,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:52:15,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:15,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 08:52:15,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:15,417 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-09-25 08:52:15,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1259606751] [2020-09-25 08:52:15,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:52:15,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 08:52:15,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328956089] [2020-09-25 08:52:15,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 08:52:15,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:15,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 08:52:15,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:52:15,425 INFO L87 Difference]: Start difference. First operand 126 states and 144 transitions. Second operand 6 states. [2020-09-25 08:52:15,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:15,570 INFO L93 Difference]: Finished difference Result 161 states and 191 transitions. [2020-09-25 08:52:15,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 08:52:15,571 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-09-25 08:52:15,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:15,582 INFO L225 Difference]: With dead ends: 161 [2020-09-25 08:52:15,582 INFO L226 Difference]: Without dead ends: 155 [2020-09-25 08:52:15,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 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 08:52:15,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-09-25 08:52:15,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 150. [2020-09-25 08:52:15,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-09-25 08:52:15,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 179 transitions. [2020-09-25 08:52:15,624 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 179 transitions. Word has length 102 [2020-09-25 08:52:15,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:15,627 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 179 transitions. [2020-09-25 08:52:15,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 08:52:15,627 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 179 transitions. [2020-09-25 08:52:15,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-25 08:52:15,638 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:15,638 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:52:15,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:52:15,639 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:15,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:15,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1435857694, now seen corresponding path program 1 times [2020-09-25 08:52:15,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:15,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [501546101] [2020-09-25 08:52:15,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:15,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:15,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:15,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:15,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:15,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:18,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:18,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:20,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:20,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-25 08:52:20,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 08:52:20,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 08:52:20,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:20,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:20,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:52:20,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-09-25 08:52:20,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 08:52:20,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:20,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:20,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:20,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:20,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:20,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:20,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:20,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:20,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:20,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:20,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:20,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:20,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:20,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:20,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 08:52:20,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:20,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:20,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:20,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:20,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:20,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:52:20,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:20,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:20,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:20,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:20,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:20,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:20,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 08:52:20,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:20,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:20,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:20,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:20,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:20,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:52:20,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:52:20,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:20,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:20,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:20,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:20,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:20,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:20,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 08:52:20,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:20,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:20,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:20,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:20,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:20,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:52:20,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:20,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:20,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:20,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:20,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:20,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:20,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 08:52:20,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:20,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:20,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:20,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:20,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:20,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:20,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:20,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:20,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:20,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:20,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:20,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:52:20,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-25 08:52:20,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:20,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:20,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:20,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 08:52:20,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:20,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:52:20,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:20,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:20,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:52:20,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:20,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 08:52:20,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:20,801 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-09-25 08:52:20,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [501546101] [2020-09-25 08:52:20,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:52:20,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:52:20,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379975230] [2020-09-25 08:52:20,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:52:20,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:20,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:52:20,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:52:20,805 INFO L87 Difference]: Start difference. First operand 150 states and 179 transitions. Second operand 4 states. [2020-09-25 08:52:20,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:20,844 INFO L93 Difference]: Finished difference Result 172 states and 204 transitions. [2020-09-25 08:52:20,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 08:52:20,846 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-09-25 08:52:20,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:20,850 INFO L225 Difference]: With dead ends: 172 [2020-09-25 08:52:20,851 INFO L226 Difference]: Without dead ends: 148 [2020-09-25 08:52:20,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:52:20,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-09-25 08:52:20,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2020-09-25 08:52:20,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-09-25 08:52:20,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 175 transitions. [2020-09-25 08:52:20,876 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 175 transitions. Word has length 104 [2020-09-25 08:52:20,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:20,877 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 175 transitions. [2020-09-25 08:52:20,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:52:20,877 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 175 transitions. [2020-09-25 08:52:20,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-25 08:52:20,885 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:20,885 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:52:20,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:52:20,885 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:20,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:20,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1772761410, now seen corresponding path program 1 times [2020-09-25 08:52:20,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:20,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232797988] [2020-09-25 08:52:20,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:20,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:20,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:20,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:21,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:21,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-25 08:52:21,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:52:21,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-09-25 08:52:21,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:21,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:21,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:52:21,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 08:52:21,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:52:21,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:21,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:21,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:21,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:21,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:21,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:21,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:21,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:21,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:21,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:21,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:21,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:21,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:21,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:21,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 08:52:21,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:21,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:21,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:21,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:21,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:21,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:21,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:21,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:21,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:21,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:21,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:21,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:21,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 08:52:21,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:21,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:21,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:21,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:21,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:21,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:52:21,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 08:52:21,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:21,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:21,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:21,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:21,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:21,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:21,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 08:52:21,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:21,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:21,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:21,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:21,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:21,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:52:21,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:21,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:21,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:21,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:21,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:21,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:21,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 08:52:21,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:21,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:21,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:21,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:21,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:21,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:52:21,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:21,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:21,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:21,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:21,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:21,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:21,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-25 08:52:21,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:21,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:21,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:21,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 08:52:21,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:21,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:52:21,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:21,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:21,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:52:21,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:21,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 08:52:21,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:21,406 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-09-25 08:52:21,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [232797988] [2020-09-25 08:52:21,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:52:21,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 08:52:21,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983831230] [2020-09-25 08:52:21,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 08:52:21,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:21,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 08:52:21,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:52:21,411 INFO L87 Difference]: Start difference. First operand 148 states and 175 transitions. Second operand 6 states. [2020-09-25 08:52:21,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:21,495 INFO L93 Difference]: Finished difference Result 171 states and 200 transitions. [2020-09-25 08:52:21,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 08:52:21,496 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2020-09-25 08:52:21,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:21,499 INFO L225 Difference]: With dead ends: 171 [2020-09-25 08:52:21,501 INFO L226 Difference]: Without dead ends: 164 [2020-09-25 08:52:21,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 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 08:52:21,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-09-25 08:52:21,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 160. [2020-09-25 08:52:21,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-09-25 08:52:21,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 189 transitions. [2020-09-25 08:52:21,533 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 189 transitions. Word has length 104 [2020-09-25 08:52:21,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:21,534 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 189 transitions. [2020-09-25 08:52:21,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 08:52:21,534 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 189 transitions. [2020-09-25 08:52:21,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-25 08:52:21,536 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:21,537 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:52:21,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 08:52:21,537 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:21,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:21,538 INFO L82 PathProgramCache]: Analyzing trace with hash 975637086, now seen corresponding path program 1 times [2020-09-25 08:52:21,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:21,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359714461] [2020-09-25 08:52:21,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:21,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:21,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:21,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:21,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:21,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-25 08:52:21,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:52:21,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-09-25 08:52:21,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:21,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:21,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:52:21,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 115 [2020-09-25 08:52:21,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:52:21,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:21,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:21,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:21,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:21,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:21,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:21,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:21,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:21,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:21,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:21,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:21,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:21,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:21,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:21,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 08:52:21,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:21,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:21,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:21,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:21,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:21,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:52:21,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:21,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:21,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:21,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:21,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:21,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:21,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 08:52:21,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:21,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:21,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:21,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:21,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:21,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:52:21,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:52:21,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:21,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:21,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:21,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:21,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:21,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:21,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 08:52:21,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:21,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:21,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:21,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:21,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:21,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:21,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:21,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:21,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:21,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:21,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:21,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:21,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 08:52:21,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:21,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:21,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:21,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:21,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:21,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:21,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:21,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:21,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:21,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:21,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:21,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:21,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-25 08:52:21,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:21,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:21,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:21,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 08:52:21,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:21,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:52:21,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:21,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:21,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:21,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:21,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:21,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:21,891 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-09-25 08:52:21,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359714461] [2020-09-25 08:52:21,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:52:21,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 08:52:21,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108135147] [2020-09-25 08:52:21,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 08:52:21,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:21,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 08:52:21,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:52:21,895 INFO L87 Difference]: Start difference. First operand 160 states and 189 transitions. Second operand 6 states. [2020-09-25 08:52:21,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:21,954 INFO L93 Difference]: Finished difference Result 166 states and 194 transitions. [2020-09-25 08:52:21,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 08:52:21,955 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2020-09-25 08:52:21,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:21,959 INFO L225 Difference]: With dead ends: 166 [2020-09-25 08:52:21,960 INFO L226 Difference]: Without dead ends: 154 [2020-09-25 08:52:21,960 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 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 08:52:21,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-09-25 08:52:21,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-09-25 08:52:21,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-09-25 08:52:21,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 180 transitions. [2020-09-25 08:52:21,983 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 180 transitions. Word has length 104 [2020-09-25 08:52:21,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:21,984 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 180 transitions. [2020-09-25 08:52:21,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 08:52:21,985 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 180 transitions. [2020-09-25 08:52:21,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-09-25 08:52:21,986 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:21,986 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:52:21,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 08:52:21,987 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:21,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:21,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1339268403, now seen corresponding path program 1 times [2020-09-25 08:52:21,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:21,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [191118982] [2020-09-25 08:52:21,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:21,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:22,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:22,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:22,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:22,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:22,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:22,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:23,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:24,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:27,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:27,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 08:52:27,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 08:52:27,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 08:52:27,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:27,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:27,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:52:27,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-25 08:52:27,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:52:27,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:27,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:27,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:27,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:27,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:27,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:27,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:27,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:27,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:27,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:27,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:27,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:27,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:27,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:27,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 08:52:27,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:27,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:27,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:27,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:27,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:27,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:27,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 08:52:27,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:52:27,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 08:52:27,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:27,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:27,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:52:27,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:52:27,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 08:52:27,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:27,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 08:52:27,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:27,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:27,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:27,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:27,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:27,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:52:27,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:52:27,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:27,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:27,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:27,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 08:52:27,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:27,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:27,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 08:52:27,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:27,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:27,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:27,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:27,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:27,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:52:27,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:27,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:27,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:27,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 08:52:27,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:27,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:27,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-25 08:52:27,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:27,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:27,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:27,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:27,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:27,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:52:27,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:27,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:27,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:27,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 08:52:27,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:27,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:27,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-25 08:52:27,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:27,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:27,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:27,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 08:52:27,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:27,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:52:27,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:27,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:27,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:27,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 08:52:27,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:27,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:27,216 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 08:52:27,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [191118982] [2020-09-25 08:52:27,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:52:27,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 08:52:27,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320279636] [2020-09-25 08:52:27,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:52:27,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:27,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:52:27,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:52:27,220 INFO L87 Difference]: Start difference. First operand 154 states and 180 transitions. Second operand 4 states. [2020-09-25 08:52:27,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:27,348 INFO L93 Difference]: Finished difference Result 297 states and 364 transitions. [2020-09-25 08:52:27,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:52:27,349 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2020-09-25 08:52:27,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:27,352 INFO L225 Difference]: With dead ends: 297 [2020-09-25 08:52:27,352 INFO L226 Difference]: Without dead ends: 171 [2020-09-25 08:52:27,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:52:27,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-09-25 08:52:27,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 160. [2020-09-25 08:52:27,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-09-25 08:52:27,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 189 transitions. [2020-09-25 08:52:27,379 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 189 transitions. Word has length 106 [2020-09-25 08:52:27,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:27,380 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 189 transitions. [2020-09-25 08:52:27,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:52:27,380 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 189 transitions. [2020-09-25 08:52:27,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-09-25 08:52:27,381 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:27,381 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:52:27,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 08:52:27,382 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:27,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:27,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1210769514, now seen corresponding path program 1 times [2020-09-25 08:52:27,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:27,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1483787924] [2020-09-25 08:52:27,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:27,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:27,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:27,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:27,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:27,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:27,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:28,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:32,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:32,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-09-25 08:52:32,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 08:52:32,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 08:52:32,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:32,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:32,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:52:32,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-09-25 08:52:32,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 08:52:32,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:32,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:32,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:32,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:32,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:32,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:32,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:32,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:32,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:32,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:32,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:32,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:32,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:32,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:32,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 08:52:32,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:32,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:32,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:32,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:32,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:32,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 08:52:32,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:52:32,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 08:52:32,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:32,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:32,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:32,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:32,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:32,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:32,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 08:52:32,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:32,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:32,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:32,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:32,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:32,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:52:32,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:52:32,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:32,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:32,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:32,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:32,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:32,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:32,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 08:52:32,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:32,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:32,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:32,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:32,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:32,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:32,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:32,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:32,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:32,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:32,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:32,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:32,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 08:52:32,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:32,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:32,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:32,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:32,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:32,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:52:32,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:32,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:32,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:52:32,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:32,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:52:32,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:32,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 08:52:32,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:32,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:32,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:32,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 08:52:32,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:32,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:52:32,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:32,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:32,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:52:32,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:32,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 08:52:32,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:32,622 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-09-25 08:52:32,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1483787924] [2020-09-25 08:52:32,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:52:32,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 08:52:32,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657973742] [2020-09-25 08:52:32,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 08:52:32,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:32,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 08:52:32,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 08:52:32,627 INFO L87 Difference]: Start difference. First operand 160 states and 189 transitions. Second operand 7 states. [2020-09-25 08:52:32,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:32,745 INFO L93 Difference]: Finished difference Result 196 states and 228 transitions. [2020-09-25 08:52:32,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 08:52:32,746 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2020-09-25 08:52:32,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:32,748 INFO L225 Difference]: With dead ends: 196 [2020-09-25 08:52:32,748 INFO L226 Difference]: Without dead ends: 186 [2020-09-25 08:52:32,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-25 08:52:32,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-09-25 08:52:32,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 160. [2020-09-25 08:52:32,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-09-25 08:52:32,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 189 transitions. [2020-09-25 08:52:32,765 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 189 transitions. Word has length 110 [2020-09-25 08:52:32,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:32,766 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 189 transitions. [2020-09-25 08:52:32,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 08:52:32,766 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 189 transitions. [2020-09-25 08:52:32,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-09-25 08:52:32,768 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:32,768 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:52:32,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 08:52:32,769 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:32,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:32,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1200520394, now seen corresponding path program 1 times [2020-09-25 08:52:32,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:32,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [826575283] [2020-09-25 08:52:32,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:32,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:32,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:32,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:32,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:32,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:37,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:37,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 08:52:37,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:52:37,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 08:52:37,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:37,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:37,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:52:37,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 08:52:37,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:52:37,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:37,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:37,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:37,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:37,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:37,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:37,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:37,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:37,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:37,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:37,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:37,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:37,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:37,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:37,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 08:52:37,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:37,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:37,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:37,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:37,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:37,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:37,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:37,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:37,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:37,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:37,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:37,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:37,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 08:52:37,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:37,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:37,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:37,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:37,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:37,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:52:37,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:37,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:37,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:52:37,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:52:37,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:52:37,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:37,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 08:52:37,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:37,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:37,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:37,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:37,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:37,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:52:37,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:37,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:37,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:37,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 08:52:37,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:37,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:37,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 08:52:37,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:37,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:37,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:37,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:37,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:37,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:52:37,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:37,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:37,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:37,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 08:52:37,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:37,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:37,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-25 08:52:37,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:37,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:37,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:37,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 08:52:37,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:37,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 08:52:37,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:37,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:37,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:37,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 08:52:37,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:37,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:37,921 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 08:52:37,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [826575283] [2020-09-25 08:52:37,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:52:37,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 08:52:37,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082406923] [2020-09-25 08:52:37,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:52:37,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:37,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:52:37,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:52:37,924 INFO L87 Difference]: Start difference. First operand 160 states and 189 transitions. Second operand 4 states. [2020-09-25 08:52:38,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:38,041 INFO L93 Difference]: Finished difference Result 358 states and 432 transitions. [2020-09-25 08:52:38,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:52:38,042 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2020-09-25 08:52:38,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:38,044 INFO L225 Difference]: With dead ends: 358 [2020-09-25 08:52:38,044 INFO L226 Difference]: Without dead ends: 207 [2020-09-25 08:52:38,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:52:38,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-09-25 08:52:38,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 187. [2020-09-25 08:52:38,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-09-25 08:52:38,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 222 transitions. [2020-09-25 08:52:38,057 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 222 transitions. Word has length 113 [2020-09-25 08:52:38,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:38,058 INFO L479 AbstractCegarLoop]: Abstraction has 187 states and 222 transitions. [2020-09-25 08:52:38,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:52:38,058 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 222 transitions. [2020-09-25 08:52:38,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-09-25 08:52:38,060 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:38,060 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:52:38,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 08:52:38,060 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:38,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:38,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1827262605, now seen corresponding path program 1 times [2020-09-25 08:52:38,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:38,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281945500] [2020-09-25 08:52:38,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:38,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:38,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:38,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:38,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:38,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:42,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:43,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:43,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-25 08:52:43,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 08:52:43,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 08:52:43,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:43,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:43,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:52:43,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 08:52:43,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:52:43,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:43,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:43,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:43,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:43,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:43,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:43,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:43,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:43,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:43,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:43,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:43,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:43,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:43,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:43,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 08:52:43,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:43,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:43,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:43,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:43,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:43,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:43,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:43,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:43,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:43,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:43,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:43,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:43,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 08:52:43,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:43,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:43,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:43,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 08:52:43,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:43,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 08:52:43,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:43,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:43,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:52:43,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 08:52:43,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 08:52:43,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:43,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 08:52:43,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:43,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:43,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:43,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:43,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:43,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:52:43,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:43,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:43,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:43,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 08:52:43,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:43,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:43,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 08:52:43,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:43,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:43,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:43,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:43,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:43,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:52:43,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:43,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:43,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:43,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 08:52:43,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:43,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:43,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-25 08:52:43,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:43,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:43,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:43,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 08:52:43,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:43,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 08:52:43,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:43,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:43,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:43,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 08:52:43,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:43,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:43,211 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 08:52:43,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281945500] [2020-09-25 08:52:43,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:52:43,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 08:52:43,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373450109] [2020-09-25 08:52:43,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:52:43,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:43,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:52:43,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:52:43,219 INFO L87 Difference]: Start difference. First operand 187 states and 222 transitions. Second operand 4 states. [2020-09-25 08:52:43,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:43,319 INFO L93 Difference]: Finished difference Result 333 states and 402 transitions. [2020-09-25 08:52:43,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 08:52:43,324 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2020-09-25 08:52:43,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:43,326 INFO L225 Difference]: With dead ends: 333 [2020-09-25 08:52:43,326 INFO L226 Difference]: Without dead ends: 194 [2020-09-25 08:52:43,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:52:43,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-09-25 08:52:43,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 192. [2020-09-25 08:52:43,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-09-25 08:52:43,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 230 transitions. [2020-09-25 08:52:43,356 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 230 transitions. Word has length 116 [2020-09-25 08:52:43,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:43,356 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 230 transitions. [2020-09-25 08:52:43,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:52:43,357 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 230 transitions. [2020-09-25 08:52:43,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-25 08:52:43,360 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:43,360 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:52:43,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 08:52:43,361 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:43,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:43,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1607884437, now seen corresponding path program 1 times [2020-09-25 08:52:43,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:43,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [394284280] [2020-09-25 08:52:43,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:43,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:43,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:43,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:43,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:43,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:47,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:48,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:48,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 08:52:48,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 08:52:48,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 08:52:48,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:48,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:48,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:52:48,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 08:52:48,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 08:52:48,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:48,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:48,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:48,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:48,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:48,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:48,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:48,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:48,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:48,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:48,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:48,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:48,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:48,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:48,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 08:52:48,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:48,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:48,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:48,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:48,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:48,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:52:48,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:48,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:48,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:52:48,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:48,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:52:48,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:48,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 08:52:48,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:48,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:48,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:48,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:48,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 08:52:48,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:52:48,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 08:52:48,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:48,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:48,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:52:48,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:48,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 08:52:48,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:48,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 08:52:48,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:48,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:48,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:48,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:48,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:48,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:52:48,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:48,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:48,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:52:48,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:48,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:52:48,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:48,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 08:52:48,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:48,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:48,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:48,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:48,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:48,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:52:48,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:48,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:48,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:52:48,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:48,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:52:48,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:48,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 08:52:48,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:48,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:48,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:48,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 08:52:48,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:48,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 08:52:48,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:48,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:48,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:52:48,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 08:52:48,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 08:52:48,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:48,745 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-09-25 08:52:48,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [394284280] [2020-09-25 08:52:48,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:52:48,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 08:52:48,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968933416] [2020-09-25 08:52:48,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 08:52:48,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:48,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 08:52:48,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 08:52:48,747 INFO L87 Difference]: Start difference. First operand 192 states and 230 transitions. Second operand 9 states. [2020-09-25 08:52:48,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:48,959 INFO L93 Difference]: Finished difference Result 248 states and 294 transitions. [2020-09-25 08:52:48,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 08:52:48,959 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 121 [2020-09-25 08:52:48,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:48,961 INFO L225 Difference]: With dead ends: 248 [2020-09-25 08:52:48,962 INFO L226 Difference]: Without dead ends: 216 [2020-09-25 08:52:48,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-09-25 08:52:48,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-09-25 08:52:48,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 174. [2020-09-25 08:52:48,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-09-25 08:52:48,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 197 transitions. [2020-09-25 08:52:48,978 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 197 transitions. Word has length 121 [2020-09-25 08:52:48,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:48,978 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 197 transitions. [2020-09-25 08:52:48,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 08:52:48,979 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 197 transitions. [2020-09-25 08:52:48,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-25 08:52:48,980 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:48,981 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 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, 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 08:52:48,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 08:52:48,981 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:48,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:48,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1568599143, now seen corresponding path program 1 times [2020-09-25 08:52:48,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:48,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1829216820] [2020-09-25 08:52:48,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:48,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:49,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:49,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:49,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:49,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:49,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking...