/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 14:07:49,815 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 14:07:49,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 14:07:49,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 14:07:49,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 14:07:49,858 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 14:07:49,859 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 14:07:49,862 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 14:07:49,864 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 14:07:49,865 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 14:07:49,866 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 14:07:49,869 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 14:07:49,869 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 14:07:49,872 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 14:07:49,874 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 14:07:49,875 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 14:07:49,878 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 14:07:49,879 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 14:07:49,880 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 14:07:49,885 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 14:07:49,886 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 14:07:49,889 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 14:07:49,890 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 14:07:49,891 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 14:07:49,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 14:07:49,903 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 14:07:49,903 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 14:07:49,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 14:07:49,908 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 14:07:49,908 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 14:07:49,909 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 14:07:49,909 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 14:07:49,910 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 14:07:49,910 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 14:07:49,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 14:07:49,911 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 14:07:49,915 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 14:07:49,915 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 14:07:49,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 14:07:49,917 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 14:07:49,917 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 14:07:49,921 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 14:07:49,951 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 14:07:49,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 14:07:49,953 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 14:07:49,953 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 14:07:49,953 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 14:07:49,953 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 14:07:49,953 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 14:07:49,954 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 14:07:49,954 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 14:07:49,954 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 14:07:49,954 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 14:07:49,954 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 14:07:49,955 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 14:07:49,955 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 14:07:49,955 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 14:07:49,955 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 14:07:49,955 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 14:07:49,956 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 14:07:49,956 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 14:07:49,956 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 14:07:49,956 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 14:07:49,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 14:07:49,957 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 14:07:49,957 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 14:07:49,957 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 14:07:49,957 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 14:07:49,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 14:07:49,957 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 14:07:49,958 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 14:07:49,958 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 14:07:50,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 14:07:50,308 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 14:07:50,311 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 14:07:50,313 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 14:07:50,313 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 14:07:50,314 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label08.c [2020-10-12 14:07:50,374 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/62a982ee5/c66f165f316b4b479affe214fdce892a/FLAGe74d4c653 [2020-10-12 14:07:51,028 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 14:07:51,029 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label08.c [2020-10-12 14:07:51,049 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/62a982ee5/c66f165f316b4b479affe214fdce892a/FLAGe74d4c653 [2020-10-12 14:07:51,152 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/62a982ee5/c66f165f316b4b479affe214fdce892a [2020-10-12 14:07:51,163 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 14:07:51,165 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 14:07:51,168 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 14:07:51,168 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 14:07:51,172 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 14:07:51,173 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:07:51" (1/1) ... [2020-10-12 14:07:51,176 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d18e9bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:07:51, skipping insertion in model container [2020-10-12 14:07:51,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:07:51" (1/1) ... [2020-10-12 14:07:51,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 14:07:51,292 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 14:07:52,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:07:52,283 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 14:07:52,576 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:07:52,599 INFO L208 MainTranslator]: Completed translation [2020-10-12 14:07:52,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:07:52 WrapperNode [2020-10-12 14:07:52,600 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 14:07:52,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 14:07:52,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 14:07:52,601 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 14:07:52,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:07:52" (1/1) ... [2020-10-12 14:07:52,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:07:52" (1/1) ... [2020-10-12 14:07:52,671 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:07:52" (1/1) ... [2020-10-12 14:07:52,672 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:07:52" (1/1) ... [2020-10-12 14:07:52,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:07:52" (1/1) ... [2020-10-12 14:07:52,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:07:52" (1/1) ... [2020-10-12 14:07:52,831 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:07:52" (1/1) ... [2020-10-12 14:07:52,854 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 14:07:52,854 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 14:07:52,854 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 14:07:52,855 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 14:07:52,856 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:07:52" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 14:07:52,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 14:07:52,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 14:07:52,930 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 14:07:52,931 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 14:07:52,931 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 14:07:52,931 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 14:07:52,931 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 14:07:52,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 14:07:52,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 14:07:52,933 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 14:07:52,934 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 14:07:52,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 14:07:52,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 14:07:58,853 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 14:07:58,853 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 14:07:58,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:07:58 BoogieIcfgContainer [2020-10-12 14:07:58,865 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 14:07:58,867 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 14:07:58,868 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 14:07:58,871 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 14:07:58,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 02:07:51" (1/3) ... [2020-10-12 14:07:58,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e1810be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:07:58, skipping insertion in model container [2020-10-12 14:07:58,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:07:52" (2/3) ... [2020-10-12 14:07:58,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e1810be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:07:58, skipping insertion in model container [2020-10-12 14:07:58,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:07:58" (3/3) ... [2020-10-12 14:07:58,879 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label08.c [2020-10-12 14:07:58,890 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 14:07:58,908 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 14:07:58,923 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 14:07:58,958 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 14:07:58,958 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 14:07:58,958 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 14:07:58,958 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 14:07:58,959 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 14:07:58,959 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 14:07:58,959 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 14:07:58,959 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 14:07:58,995 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-12 14:07:59,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-12 14:07:59,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:07:59,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:07:59,006 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:07:59,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:07:59,011 INFO L82 PathProgramCache]: Analyzing trace with hash 192141165, now seen corresponding path program 1 times [2020-10-12 14:07:59,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:07:59,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213718696] [2020-10-12 14:07:59,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:07:59,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:07:59,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:07:59,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:07:59,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-12 14:07:59,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:07:59,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 406 [2020-10-12 14:07:59,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:07:59,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:07:59,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:07:59,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 14:07:59,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 14:07:59,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:07:59,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:07:59,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:07:59,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:07:59,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:07:59,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:07:59,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 14:07:59,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:07:59,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:07:59,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:07:59,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:07:59,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-12 14:07:59,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:07:59,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213718696] [2020-10-12 14:07:59,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:07:59,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 14:07:59,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239215165] [2020-10-12 14:07:59,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 14:07:59,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:07:59,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 14:07:59,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 14:07:59,837 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-12 14:08:07,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:08:07,681 INFO L93 Difference]: Finished difference Result 1199 states and 2164 transitions. [2020-10-12 14:08:07,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:08:07,682 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-10-12 14:08:07,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:08:07,706 INFO L225 Difference]: With dead ends: 1199 [2020-10-12 14:08:07,707 INFO L226 Difference]: Without dead ends: 697 [2020-10-12 14:08:07,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:08:07,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-12 14:08:07,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 691. [2020-10-12 14:08:07,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-12 14:08:07,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1012 transitions. [2020-10-12 14:08:07,827 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1012 transitions. Word has length 57 [2020-10-12 14:08:07,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:08:07,828 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 1012 transitions. [2020-10-12 14:08:07,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 14:08:07,828 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1012 transitions. [2020-10-12 14:08:07,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-12 14:08:07,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:08:07,836 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:08:07,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 14:08:07,836 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:08:07,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:08:07,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1704640918, now seen corresponding path program 1 times [2020-10-12 14:08:07,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:08:07,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [790586296] [2020-10-12 14:08:07,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:08:07,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:08:07,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:08:08,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:08:08,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:08:10,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:08:10,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-12 14:08:10,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:08:10,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2422 [2020-10-12 14:08:10,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:08:10,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 14:08:10,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-12 14:08:10,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-12 14:08:10,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:08:10,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:08:10,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:08:10,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:08:10,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:08:10,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:08:10,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:08:10,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 14:08:10,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:08:10,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:08:10,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:08:10,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:08:10,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:08:10,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:08:10,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:08:10,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:08:10,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:08:10,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 14:08:10,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:08:10,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-12 14:08:10,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:08:10,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:08:10,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:08:10,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 14:08:10,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:08:10,774 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:08:10,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [790586296] [2020-10-12 14:08:10,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:08:10,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 14:08:10,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66749794] [2020-10-12 14:08:10,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:08:10,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:08:10,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:08:10,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:08:10,779 INFO L87 Difference]: Start difference. First operand 691 states and 1012 transitions. Second operand 8 states. [2020-10-12 14:08:17,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:08:17,096 INFO L93 Difference]: Finished difference Result 1507 states and 2170 transitions. [2020-10-12 14:08:17,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:08:17,103 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 126 [2020-10-12 14:08:17,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:08:17,109 INFO L225 Difference]: With dead ends: 1507 [2020-10-12 14:08:17,109 INFO L226 Difference]: Without dead ends: 695 [2020-10-12 14:08:17,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:08:17,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-10-12 14:08:17,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 691. [2020-10-12 14:08:17,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-12 14:08:17,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 929 transitions. [2020-10-12 14:08:17,146 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 929 transitions. Word has length 126 [2020-10-12 14:08:17,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:08:17,147 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 929 transitions. [2020-10-12 14:08:17,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:08:17,147 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 929 transitions. [2020-10-12 14:08:17,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-12 14:08:17,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:08:17,150 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:08:17,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 14:08:17,150 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:08:17,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:08:17,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1712990111, now seen corresponding path program 1 times [2020-10-12 14:08:17,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:08:17,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1791821204] [2020-10-12 14:08:17,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:08:17,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:08:17,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:08:17,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:08:18,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:08:18,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-12 14:08:18,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:08:18,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1282 [2020-10-12 14:08:18,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:08:18,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:08:18,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:08:18,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 14:08:18,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:08:18,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:08:18,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:08:18,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:08:18,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:08:18,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:08:18,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:08:18,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 14:08:18,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:08:18,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:08:18,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:08:18,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:08:18,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:08:18,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:08:18,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:08:18,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:08:18,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:08:18,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 14:08:18,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:08:18,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-12 14:08:18,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:08:18,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:08:18,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:08:18,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 14:08:18,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:08:18,887 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:08:18,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1791821204] [2020-10-12 14:08:18,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:08:18,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 14:08:18,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199489162] [2020-10-12 14:08:18,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:08:18,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:08:18,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:08:18,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:08:18,892 INFO L87 Difference]: Start difference. First operand 691 states and 929 transitions. Second operand 7 states. [2020-10-12 14:08:29,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:08:29,365 INFO L93 Difference]: Finished difference Result 1701 states and 2214 transitions. [2020-10-12 14:08:29,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 14:08:29,370 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 137 [2020-10-12 14:08:29,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:08:29,376 INFO L225 Difference]: With dead ends: 1701 [2020-10-12 14:08:29,376 INFO L226 Difference]: Without dead ends: 1016 [2020-10-12 14:08:29,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-12 14:08:29,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2020-10-12 14:08:29,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 1010. [2020-10-12 14:08:29,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1010 states. [2020-10-12 14:08:29,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 1255 transitions. [2020-10-12 14:08:29,415 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 1255 transitions. Word has length 137 [2020-10-12 14:08:29,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:08:29,415 INFO L479 AbstractCegarLoop]: Abstraction has 1010 states and 1255 transitions. [2020-10-12 14:08:29,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:08:29,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 1255 transitions. [2020-10-12 14:08:29,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-10-12 14:08:29,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:08:29,420 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:08:29,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 14:08:29,421 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:08:29,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:08:29,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1040726137, now seen corresponding path program 1 times [2020-10-12 14:08:29,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:08:29,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [698053407] [2020-10-12 14:08:29,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:08:29,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:08:29,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:08:29,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:08:30,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:08:32,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:08:32,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-12 14:08:32,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:08:32,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2563 [2020-10-12 14:08:32,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:08:32,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 14:08:32,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:08:32,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 282 [2020-10-12 14:08:32,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:08:32,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:08:32,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:08:32,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:08:32,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:08:32,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:08:32,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:08:32,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 14:08:32,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:08:32,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:08:32,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:08:32,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:08:32,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:08:32,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:08:32,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:08:32,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:08:32,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:08:32,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-12 14:08:32,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:08:32,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 514 [2020-10-12 14:08:32,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:08:32,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:08:32,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:08:32,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 238 [2020-10-12 14:08:32,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:08:33,438 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 16 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:08:33,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [698053407] [2020-10-12 14:08:33,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:08:33,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:08:33,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617155667] [2020-10-12 14:08:33,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:08:33,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:08:33,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:08:33,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:08:33,441 INFO L87 Difference]: Start difference. First operand 1010 states and 1255 transitions. Second operand 8 states. [2020-10-12 14:08:42,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:08:42,658 INFO L93 Difference]: Finished difference Result 1751 states and 2241 transitions. [2020-10-12 14:08:42,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 14:08:42,663 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 294 [2020-10-12 14:08:42,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:08:42,668 INFO L225 Difference]: With dead ends: 1751 [2020-10-12 14:08:42,669 INFO L226 Difference]: Without dead ends: 1017 [2020-10-12 14:08:42,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-10-12 14:08:42,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2020-10-12 14:08:42,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 1001. [2020-10-12 14:08:42,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1001 states. [2020-10-12 14:08:42,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1243 transitions. [2020-10-12 14:08:42,698 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1243 transitions. Word has length 294 [2020-10-12 14:08:42,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:08:42,699 INFO L479 AbstractCegarLoop]: Abstraction has 1001 states and 1243 transitions. [2020-10-12 14:08:42,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:08:42,699 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1243 transitions. [2020-10-12 14:08:42,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2020-10-12 14:08:42,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:08:42,707 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:08:42,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 14:08:42,707 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:08:42,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:08:42,708 INFO L82 PathProgramCache]: Analyzing trace with hash 819475629, now seen corresponding path program 1 times [2020-10-12 14:08:42,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:08:42,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876952488] [2020-10-12 14:08:42,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:08:42,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:08:42,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:08:43,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:08:45,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:08:45,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 423 [2020-10-12 14:08:45,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:08:45,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2628 [2020-10-12 14:08:45,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:08:45,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:08:45,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 366 [2020-10-12 14:08:45,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 14:08:45,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:08:45,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:08:45,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:08:45,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:08:45,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:08:45,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:08:45,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:08:45,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:08:45,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:08:45,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:08:45,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:08:45,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:08:45,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:08:45,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:08:45,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:08:45,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:08:45,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:08:45,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:08:45,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:08:45,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-12 14:08:45,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:08:45,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:08:45,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:08:45,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:08:45,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:08:45,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:08:45,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:08:45,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:08:45,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:08:45,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 14:08:45,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:08:45,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-12 14:08:45,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:08:45,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:08:45,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:08:45,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-12 14:08:45,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:08:46,291 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-12 14:08:46,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [876952488] [2020-10-12 14:08:46,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:08:46,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:08:46,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844412786] [2020-10-12 14:08:46,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:08:46,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:08:46,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:08:46,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:08:46,302 INFO L87 Difference]: Start difference. First operand 1001 states and 1243 transitions. Second operand 5 states. [2020-10-12 14:08:54,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:08:54,550 INFO L93 Difference]: Finished difference Result 2056 states and 2749 transitions. [2020-10-12 14:08:54,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:08:54,551 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 411 [2020-10-12 14:08:54,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:08:54,560 INFO L225 Difference]: With dead ends: 2056 [2020-10-12 14:08:54,560 INFO L226 Difference]: Without dead ends: 1368 [2020-10-12 14:08:54,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:08:54,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1368 states. [2020-10-12 14:08:54,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1368 to 1363. [2020-10-12 14:08:54,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1363 states. [2020-10-12 14:08:54,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1780 transitions. [2020-10-12 14:08:54,607 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1780 transitions. Word has length 411 [2020-10-12 14:08:54,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:08:54,608 INFO L479 AbstractCegarLoop]: Abstraction has 1363 states and 1780 transitions. [2020-10-12 14:08:54,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:08:54,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1780 transitions. [2020-10-12 14:08:54,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2020-10-12 14:08:54,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:08:54,617 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:08:54,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 14:08:54,618 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:08:54,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:08:54,618 INFO L82 PathProgramCache]: Analyzing trace with hash 572520792, now seen corresponding path program 1 times [2020-10-12 14:08:54,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:08:54,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128330104] [2020-10-12 14:08:54,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:08:54,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:08:54,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:08:55,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:08:55,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:08:57,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:08:57,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 434 [2020-10-12 14:08:57,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:08:57,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3053 [2020-10-12 14:08:57,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:08:57,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 14:08:57,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:08:57,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 412 [2020-10-12 14:08:57,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:08:58,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:08:58,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:08:58,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:08:58,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:08:58,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:08:58,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:08:58,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 14:08:58,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:08:58,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:08:58,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:08:58,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:08:58,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:08:58,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:08:58,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:08:58,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:08:58,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:08:58,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:08:58,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:08:58,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 598 [2020-10-12 14:08:58,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:08:58,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:08:58,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:08:58,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 275 [2020-10-12 14:08:58,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:08:59,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:08:59,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:08:59,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:08:59,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:08:59,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 14:08:59,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:08:59,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-12 14:08:59,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:08:59,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:08:59,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:08:59,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-12 14:08:59,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:08:59,889 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 32 proven. 71 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-12 14:08:59,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128330104] [2020-10-12 14:08:59,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:08:59,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 14:08:59,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234793920] [2020-10-12 14:08:59,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 14:08:59,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:08:59,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 14:08:59,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-12 14:08:59,892 INFO L87 Difference]: Start difference. First operand 1363 states and 1780 transitions. Second operand 9 states. [2020-10-12 14:09:08,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:09:08,133 INFO L93 Difference]: Finished difference Result 2805 states and 3677 transitions. [2020-10-12 14:09:08,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 14:09:08,135 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 422 [2020-10-12 14:09:08,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:09:08,143 INFO L225 Difference]: With dead ends: 2805 [2020-10-12 14:09:08,143 INFO L226 Difference]: Without dead ends: 1718 [2020-10-12 14:09:08,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-12 14:09:08,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1718 states. [2020-10-12 14:09:08,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1718 to 1699. [2020-10-12 14:09:08,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1699 states. [2020-10-12 14:09:08,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2142 transitions. [2020-10-12 14:09:08,189 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2142 transitions. Word has length 422 [2020-10-12 14:09:08,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:09:08,190 INFO L479 AbstractCegarLoop]: Abstraction has 1699 states and 2142 transitions. [2020-10-12 14:09:08,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 14:09:08,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2142 transitions. [2020-10-12 14:09:08,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2020-10-12 14:09:08,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:09:08,199 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:09:08,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 14:09:08,200 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:09:08,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:09:08,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1449234388, now seen corresponding path program 1 times [2020-10-12 14:09:08,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:09:08,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755081021] [2020-10-12 14:09:08,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:09:08,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:09:08,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:08,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:09,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:09,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:09:09,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 439 [2020-10-12 14:09:09,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:09:09,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1637 [2020-10-12 14:09:09,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:09:09,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:09:09,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-12 14:09:09,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-12 14:09:09,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:09:10,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:09:10,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:09:10,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:10,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:09:10,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:09:10,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:09:10,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:09:10,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:09:10,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:09:10,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:09:10,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:09:10,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:09:10,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:09:10,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:09:10,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:10,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:09:10,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:09:10,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:09:10,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-12 14:09:10,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:09:10,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:09:10,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:09:10,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-12 14:09:10,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:09:10,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:09:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:09:10,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:10,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:09:10,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-12 14:09:10,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:09:10,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-12 14:09:10,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:09:10,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:09:10,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:09:10,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-12 14:09:10,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:09:10,608 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 14:09:10,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [755081021] [2020-10-12 14:09:10,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:09:10,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:09:10,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742240543] [2020-10-12 14:09:10,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:09:10,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:09:10,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:09:10,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:09:10,612 INFO L87 Difference]: Start difference. First operand 1699 states and 2142 transitions. Second operand 7 states. [2020-10-12 14:09:19,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:09:19,817 INFO L93 Difference]: Finished difference Result 4423 states and 5785 transitions. [2020-10-12 14:09:19,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:09:19,819 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 427 [2020-10-12 14:09:19,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:09:19,834 INFO L225 Difference]: With dead ends: 4423 [2020-10-12 14:09:19,834 INFO L226 Difference]: Without dead ends: 3037 [2020-10-12 14:09:19,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:09:19,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3037 states. [2020-10-12 14:09:19,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3037 to 2985. [2020-10-12 14:09:19,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2985 states. [2020-10-12 14:09:19,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2985 states to 2985 states and 3574 transitions. [2020-10-12 14:09:19,937 INFO L78 Accepts]: Start accepts. Automaton has 2985 states and 3574 transitions. Word has length 427 [2020-10-12 14:09:19,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:09:19,938 INFO L479 AbstractCegarLoop]: Abstraction has 2985 states and 3574 transitions. [2020-10-12 14:09:19,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:09:19,939 INFO L276 IsEmpty]: Start isEmpty. Operand 2985 states and 3574 transitions. [2020-10-12 14:09:19,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2020-10-12 14:09:19,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:09:19,945 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:09:19,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 14:09:19,946 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:09:19,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:09:19,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1895736253, now seen corresponding path program 1 times [2020-10-12 14:09:19,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:09:19,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700788193] [2020-10-12 14:09:19,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:09:20,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:09:20,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:20,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:21,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:23,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:09:23,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 490 [2020-10-12 14:09:23,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:09:23,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3126 [2020-10-12 14:09:23,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:09:23,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 14:09:23,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:09:23,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 468 [2020-10-12 14:09:23,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:09:23,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:09:23,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:09:23,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:23,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:09:23,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:09:23,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:09:23,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 14:09:23,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:09:23,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:09:23,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:09:23,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:09:23,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:09:23,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:09:23,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:09:23,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:23,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:09:23,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:09:23,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:09:23,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-12 14:09:23,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:09:23,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:09:23,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:09:23,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 275 [2020-10-12 14:09:23,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:09:23,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:09:23,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:09:23,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:24,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:09:24,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-12 14:09:24,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:09:24,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-12 14:09:24,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:09:24,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:09:24,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:09:24,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-12 14:09:24,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:09:24,461 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 39 proven. 64 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-12 14:09:24,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700788193] [2020-10-12 14:09:24,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:09:24,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:09:24,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945407419] [2020-10-12 14:09:24,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:09:24,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:09:24,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:09:24,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:09:24,465 INFO L87 Difference]: Start difference. First operand 2985 states and 3574 transitions. Second operand 8 states. [2020-10-12 14:09:35,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:09:35,355 INFO L93 Difference]: Finished difference Result 6372 states and 8096 transitions. [2020-10-12 14:09:35,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:09:35,357 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 478 [2020-10-12 14:09:35,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:09:35,378 INFO L225 Difference]: With dead ends: 6372 [2020-10-12 14:09:35,378 INFO L226 Difference]: Without dead ends: 4276 [2020-10-12 14:09:35,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:09:35,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4276 states. [2020-10-12 14:09:35,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4276 to 3937. [2020-10-12 14:09:35,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3937 states. [2020-10-12 14:09:35,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3937 states to 3937 states and 4847 transitions. [2020-10-12 14:09:35,488 INFO L78 Accepts]: Start accepts. Automaton has 3937 states and 4847 transitions. Word has length 478 [2020-10-12 14:09:35,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:09:35,490 INFO L479 AbstractCegarLoop]: Abstraction has 3937 states and 4847 transitions. [2020-10-12 14:09:35,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:09:35,490 INFO L276 IsEmpty]: Start isEmpty. Operand 3937 states and 4847 transitions. [2020-10-12 14:09:35,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2020-10-12 14:09:35,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:09:35,497 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:09:35,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 14:09:35,498 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:09:35,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:09:35,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1922551307, now seen corresponding path program 1 times [2020-10-12 14:09:35,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:09:35,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066627647] [2020-10-12 14:09:35,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:09:35,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:09:35,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:35,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:36,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:37,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:40,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:09:40,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 528 [2020-10-12 14:09:40,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:09:40,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-12 14:09:40,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:09:40,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:09:40,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 471 [2020-10-12 14:09:40,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 14:09:40,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:09:40,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:09:40,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:09:40,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:40,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:09:40,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:09:40,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:09:40,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 14:09:40,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:09:40,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:09:40,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:09:40,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:09:40,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:09:40,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:09:40,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:09:40,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:40,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:09:40,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:09:40,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:09:40,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-12 14:09:40,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:09:40,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:09:40,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:09:40,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:09:40,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:09:41,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:09:41,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:09:41,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:41,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:09:41,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:09:41,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:09:41,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 14:09:41,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:09:41,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:09:41,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:09:41,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:09:41,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:09:41,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-12 14:09:41,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:09:41,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:41,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:09:41,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 14:09:41,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:09:41,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-12 14:09:41,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:09:41,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:09:41,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:09:41,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-12 14:09:41,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:09:41,278 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 153 proven. 3 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2020-10-12 14:09:41,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066627647] [2020-10-12 14:09:41,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:09:41,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:09:41,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311232226] [2020-10-12 14:09:41,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:09:41,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:09:41,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:09:41,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:09:41,281 INFO L87 Difference]: Start difference. First operand 3937 states and 4847 transitions. Second operand 5 states. [2020-10-12 14:09:46,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:09:46,377 INFO L93 Difference]: Finished difference Result 6967 states and 8778 transitions. [2020-10-12 14:09:46,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:09:46,384 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 514 [2020-10-12 14:09:46,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:09:46,399 INFO L225 Difference]: With dead ends: 6967 [2020-10-12 14:09:46,400 INFO L226 Difference]: Without dead ends: 3946 [2020-10-12 14:09:46,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:09:46,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3946 states. [2020-10-12 14:09:46,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3946 to 3937. [2020-10-12 14:09:46,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3937 states. [2020-10-12 14:09:46,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3937 states to 3937 states and 4844 transitions. [2020-10-12 14:09:46,492 INFO L78 Accepts]: Start accepts. Automaton has 3937 states and 4844 transitions. Word has length 514 [2020-10-12 14:09:46,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:09:46,494 INFO L479 AbstractCegarLoop]: Abstraction has 3937 states and 4844 transitions. [2020-10-12 14:09:46,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:09:46,494 INFO L276 IsEmpty]: Start isEmpty. Operand 3937 states and 4844 transitions. [2020-10-12 14:09:46,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2020-10-12 14:09:46,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:09:46,500 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:09:46,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 14:09:46,500 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:09:46,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:09:46,501 INFO L82 PathProgramCache]: Analyzing trace with hash 2144800019, now seen corresponding path program 1 times [2020-10-12 14:09:46,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:09:46,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417319042] [2020-10-12 14:09:46,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:09:46,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:09:46,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:46,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:48,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:48,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:50,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:09:50,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-12 14:09:50,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:09:50,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4013 [2020-10-12 14:09:50,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:09:50,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:09:50,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-12 14:09:50,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-12 14:09:50,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:09:50,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:09:50,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:09:50,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:50,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:09:50,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:09:50,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:09:50,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 14:09:50,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:09:50,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:09:50,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:09:50,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:09:50,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:09:50,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:09:50,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:09:50,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:50,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:09:50,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:09:50,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:09:50,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-12 14:09:50,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:09:50,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:09:50,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:09:50,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-12 14:09:50,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:09:51,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:09:51,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:09:51,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:51,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:09:51,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:09:51,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:09:51,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-12 14:09:51,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:09:51,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:09:51,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:09:51,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-12 14:09:51,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:09:51,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-12 14:09:51,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:09:51,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:51,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:09:51,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 14:09:51,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:09:51,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 14:09:51,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:09:51,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:09:51,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-12 14:09:51,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:09:51,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 14:09:51,887 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 262 proven. 75 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-12 14:09:51,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417319042] [2020-10-12 14:09:51,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:09:51,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:09:51,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535188142] [2020-10-12 14:09:51,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:09:51,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:09:51,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:09:51,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:09:51,889 INFO L87 Difference]: Start difference. First operand 3937 states and 4844 transitions. Second operand 7 states. [2020-10-12 14:10:00,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:10:00,375 INFO L93 Difference]: Finished difference Result 8903 states and 10947 transitions. [2020-10-12 14:10:00,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 14:10:00,378 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 518 [2020-10-12 14:10:00,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:10:00,398 INFO L225 Difference]: With dead ends: 8903 [2020-10-12 14:10:00,398 INFO L226 Difference]: Without dead ends: 5279 [2020-10-12 14:10:00,406 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-12 14:10:00,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5279 states. [2020-10-12 14:10:00,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5279 to 4899. [2020-10-12 14:10:00,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4899 states. [2020-10-12 14:10:00,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4899 states to 4899 states and 5832 transitions. [2020-10-12 14:10:00,521 INFO L78 Accepts]: Start accepts. Automaton has 4899 states and 5832 transitions. Word has length 518 [2020-10-12 14:10:00,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:10:00,522 INFO L479 AbstractCegarLoop]: Abstraction has 4899 states and 5832 transitions. [2020-10-12 14:10:00,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:10:00,522 INFO L276 IsEmpty]: Start isEmpty. Operand 4899 states and 5832 transitions. [2020-10-12 14:10:00,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2020-10-12 14:10:00,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:10:00,528 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:10:00,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 14:10:00,529 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:10:00,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:10:00,530 INFO L82 PathProgramCache]: Analyzing trace with hash 339886043, now seen corresponding path program 1 times [2020-10-12 14:10:00,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:10:00,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [756557550] [2020-10-12 14:10:00,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:10:00,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:00,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:01,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:01,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:02,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:02,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 544 [2020-10-12 14:10:02,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:10:02,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1717 [2020-10-12 14:10:02,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:02,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:10:02,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 487 [2020-10-12 14:10:02,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 14:10:02,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:02,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:10:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:02,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:02,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:02,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:10:02,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:10:02,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:10:02,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:02,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:10:02,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:10:02,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:10:02,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:02,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:10:02,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:02,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:02,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:02,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:10:02,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:10:02,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-12 14:10:02,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:02,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:10:02,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:10:02,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:10:02,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:02,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:10:02,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:02,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:02,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:02,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:10:02,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:10:02,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 14:10:02,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:02,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:10:02,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:10:02,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:10:02,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:02,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-12 14:10:02,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:02,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:02,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:02,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 14:10:02,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:10:02,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-12 14:10:02,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:02,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:10:02,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:10:02,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 14:10:02,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:02,879 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 153 proven. 3 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2020-10-12 14:10:02,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [756557550] [2020-10-12 14:10:02,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:10:02,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:10:02,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578519631] [2020-10-12 14:10:02,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:10:02,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:10:02,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:10:02,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:10:02,882 INFO L87 Difference]: Start difference. First operand 4899 states and 5832 transitions. Second operand 5 states. [2020-10-12 14:10:11,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:10:11,103 INFO L93 Difference]: Finished difference Result 10453 states and 13239 transitions. [2020-10-12 14:10:11,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:10:11,105 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 530 [2020-10-12 14:10:11,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:10:11,154 INFO L225 Difference]: With dead ends: 10453 [2020-10-12 14:10:11,154 INFO L226 Difference]: Without dead ends: 6801 [2020-10-12 14:10:11,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:10:11,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6801 states. [2020-10-12 14:10:11,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6801 to 6785. [2020-10-12 14:10:11,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6785 states. [2020-10-12 14:10:11,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6785 states to 6785 states and 8410 transitions. [2020-10-12 14:10:11,305 INFO L78 Accepts]: Start accepts. Automaton has 6785 states and 8410 transitions. Word has length 530 [2020-10-12 14:10:11,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:10:11,307 INFO L479 AbstractCegarLoop]: Abstraction has 6785 states and 8410 transitions. [2020-10-12 14:10:11,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:10:11,307 INFO L276 IsEmpty]: Start isEmpty. Operand 6785 states and 8410 transitions. [2020-10-12 14:10:11,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2020-10-12 14:10:11,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:10:11,313 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:10:11,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 14:10:11,314 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:10:11,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:10:11,314 INFO L82 PathProgramCache]: Analyzing trace with hash 510177383, now seen corresponding path program 1 times [2020-10-12 14:10:11,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:10:11,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1505171103] [2020-10-12 14:10:11,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:10:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:11,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:12,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:12,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:14,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:14,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 550 [2020-10-12 14:10:14,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:10:14,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2598 [2020-10-12 14:10:14,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:14,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:10:14,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-12 14:10:14,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-12 14:10:14,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:14,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:10:14,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:14,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:14,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:14,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:10:14,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:10:14,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:10:14,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:14,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:10:14,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:10:14,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:10:14,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:10:14,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:10:14,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:14,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:14,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:14,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:10:14,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:10:14,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-12 14:10:14,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:14,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:10:14,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:10:14,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:10:14,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:14,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:10:14,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:14,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:14,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:14,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:10:14,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:10:14,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-12 14:10:14,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:14,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:10:14,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:10:14,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 14:10:14,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:14,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-12 14:10:14,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:14,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:14,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:14,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-12 14:10:14,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:10:14,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-12 14:10:14,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:14,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:10:14,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:10:14,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-12 14:10:14,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:14,826 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 313 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-12 14:10:14,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1505171103] [2020-10-12 14:10:14,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:10:14,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:10:14,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859072639] [2020-10-12 14:10:14,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:10:14,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:10:14,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:10:14,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:10:14,827 INFO L87 Difference]: Start difference. First operand 6785 states and 8410 transitions. Second operand 7 states. [2020-10-12 14:10:23,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:10:23,876 INFO L93 Difference]: Finished difference Result 15844 states and 20643 transitions. [2020-10-12 14:10:23,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:10:23,878 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 536 [2020-10-12 14:10:23,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:10:23,913 INFO L225 Difference]: With dead ends: 15844 [2020-10-12 14:10:23,913 INFO L226 Difference]: Without dead ends: 9372 [2020-10-12 14:10:23,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:10:23,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9372 states. [2020-10-12 14:10:24,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9372 to 9323. [2020-10-12 14:10:24,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9323 states. [2020-10-12 14:10:24,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9323 states to 9323 states and 11417 transitions. [2020-10-12 14:10:24,125 INFO L78 Accepts]: Start accepts. Automaton has 9323 states and 11417 transitions. Word has length 536 [2020-10-12 14:10:24,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:10:24,126 INFO L479 AbstractCegarLoop]: Abstraction has 9323 states and 11417 transitions. [2020-10-12 14:10:24,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:10:24,126 INFO L276 IsEmpty]: Start isEmpty. Operand 9323 states and 11417 transitions. [2020-10-12 14:10:24,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2020-10-12 14:10:24,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:10:24,141 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:10:24,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 14:10:24,141 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:10:24,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:10:24,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1685381237, now seen corresponding path program 1 times [2020-10-12 14:10:24,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:10:24,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [131995653] [2020-10-12 14:10:24,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:10:24,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:24,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:24,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:25,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:27,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:27,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:29,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:29,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 653 [2020-10-12 14:10:29,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 14:10:29,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-12 14:10:29,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:29,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:10:29,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-12 14:10:29,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-12 14:10:29,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:29,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:10:29,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:29,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:29,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:29,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:10:29,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:10:29,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:10:29,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:29,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:10:29,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:10:29,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:10:29,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:29,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:10:29,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:29,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:29,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:29,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:10:29,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:10:29,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-12 14:10:29,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:29,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:10:29,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:10:29,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:10:29,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:29,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:10:29,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:29,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:29,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:29,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:10:29,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:10:29,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-12 14:10:29,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:29,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:10:29,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:10:29,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 14:10:29,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:29,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-12 14:10:29,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:29,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:29,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:29,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 14:10:29,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:10:29,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-12 14:10:29,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:29,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:10:29,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:10:29,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-12 14:10:29,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:29,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2020-10-12 14:10:29,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:29,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:29,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:29,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-12 14:10:29,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:10:29,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 14:10:29,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:29,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:10:29,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-12 14:10:29,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:10:29,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:30,168 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 409 proven. 81 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2020-10-12 14:10:30,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [131995653] [2020-10-12 14:10:30,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:10:30,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:10:30,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771942610] [2020-10-12 14:10:30,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:10:30,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:10:30,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:10:30,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:10:30,171 INFO L87 Difference]: Start difference. First operand 9323 states and 11417 transitions. Second operand 7 states. [2020-10-12 14:10:39,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:10:39,497 INFO L93 Difference]: Finished difference Result 21335 states and 27892 transitions. [2020-10-12 14:10:39,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:10:39,500 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 637 [2020-10-12 14:10:39,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:10:39,563 INFO L225 Difference]: With dead ends: 21335 [2020-10-12 14:10:39,564 INFO L226 Difference]: Without dead ends: 13566 [2020-10-12 14:10:39,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:10:39,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13566 states. [2020-10-12 14:10:39,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13566 to 13183. [2020-10-12 14:10:39,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13183 states. [2020-10-12 14:10:39,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13183 states to 13183 states and 16212 transitions. [2020-10-12 14:10:39,931 INFO L78 Accepts]: Start accepts. Automaton has 13183 states and 16212 transitions. Word has length 637 [2020-10-12 14:10:39,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:10:39,932 INFO L479 AbstractCegarLoop]: Abstraction has 13183 states and 16212 transitions. [2020-10-12 14:10:39,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:10:39,933 INFO L276 IsEmpty]: Start isEmpty. Operand 13183 states and 16212 transitions. [2020-10-12 14:10:39,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 647 [2020-10-12 14:10:39,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:10:39,944 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:10:39,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 14:10:39,944 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:10:39,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:10:39,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1543225370, now seen corresponding path program 1 times [2020-10-12 14:10:39,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:10:39,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081001569] [2020-10-12 14:10:39,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:10:40,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:40,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:40,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:41,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:42,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:42,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 660 [2020-10-12 14:10:42,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:10:42,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2491 [2020-10-12 14:10:42,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:42,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:10:42,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 491 [2020-10-12 14:10:42,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-12 14:10:42,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:42,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:10:42,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:42,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:42,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:42,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:10:42,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:10:42,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 14:10:42,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:42,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:10:42,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:10:42,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:10:42,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:42,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:10:42,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:42,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:42,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:42,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:10:42,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:10:42,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-12 14:10:42,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:42,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:10:42,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:10:42,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:10:42,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:42,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:10:42,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:42,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:43,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:43,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-12 14:10:43,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:10:43,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-12 14:10:43,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:43,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:10:43,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:10:43,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-12 14:10:43,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:43,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-12 14:10:43,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:43,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:43,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:43,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:43,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 14:10:43,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:10:43,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-12 14:10:43,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:43,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:10:43,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:10:43,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-12 14:10:43,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:43,488 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 316 proven. 51 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2020-10-12 14:10:43,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081001569] [2020-10-12 14:10:43,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:10:43,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 14:10:43,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573001937] [2020-10-12 14:10:43,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 14:10:43,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:10:43,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 14:10:43,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:10:43,490 INFO L87 Difference]: Start difference. First operand 13183 states and 16212 transitions. Second operand 6 states. [2020-10-12 14:10:53,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:10:53,509 INFO L93 Difference]: Finished difference Result 29582 states and 38559 transitions. [2020-10-12 14:10:53,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 14:10:53,511 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 646 [2020-10-12 14:10:53,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:10:53,565 INFO L225 Difference]: With dead ends: 29582 [2020-10-12 14:10:53,566 INFO L226 Difference]: Without dead ends: 16712 [2020-10-12 14:10:53,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:10:53,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16712 states. [2020-10-12 14:10:53,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16712 to 16634. [2020-10-12 14:10:53,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16634 states. [2020-10-12 14:10:54,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16634 states to 16634 states and 20729 transitions. [2020-10-12 14:10:54,008 INFO L78 Accepts]: Start accepts. Automaton has 16634 states and 20729 transitions. Word has length 646 [2020-10-12 14:10:54,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:10:54,009 INFO L479 AbstractCegarLoop]: Abstraction has 16634 states and 20729 transitions. [2020-10-12 14:10:54,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 14:10:54,009 INFO L276 IsEmpty]: Start isEmpty. Operand 16634 states and 20729 transitions. [2020-10-12 14:10:54,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 735 [2020-10-12 14:10:54,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:10:54,038 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:10:54,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 14:10:54,039 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:10:54,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:10:54,039 INFO L82 PathProgramCache]: Analyzing trace with hash 401279217, now seen corresponding path program 1 times [2020-10-12 14:10:54,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:10:54,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618890002] [2020-10-12 14:10:54,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:10:54,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:54,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:54,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:55,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:57,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:59,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:59,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 750 [2020-10-12 14:10:59,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:10:59,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 14:10:59,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:59,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 14:10:59,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 491 [2020-10-12 14:10:59,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 258 [2020-10-12 14:10:59,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:59,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:10:59,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:59,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:59,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:59,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:10:59,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:10:59,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 14:10:59,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:59,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:10:59,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:10:59,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:10:59,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:10:59,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:10:59,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:59,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:59,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:59,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:10:59,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:10:59,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-12 14:10:59,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:59,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:10:59,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:10:59,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:10:59,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:10:59,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:10:59,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:59,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:00,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:11:00,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-12 14:11:00,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:11:00,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 452 [2020-10-12 14:11:00,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:11:00,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:11:00,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:11:00,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-12 14:11:00,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:11:00,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-12 14:11:00,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:11:00,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:00,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:00,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:11:00,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 14:11:00,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:11:00,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-12 14:11:00,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:11:00,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:11:00,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:11:00,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-12 14:11:00,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:11:00,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2020-10-12 14:11:00,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:11:00,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:00,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:01,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:11:01,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-12 14:11:01,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:11:01,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-12 14:11:01,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:11:01,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 14:11:01,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:11:01,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-12 14:11:01,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:11:01,358 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 22 [2020-10-12 14:11:01,520 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 23 [2020-10-12 14:11:01,683 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2020-10-12 14:11:02,278 INFO L134 CoverageAnalysis]: Checked inductivity of 877 backedges. 523 proven. 155 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2020-10-12 14:11:02,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618890002] [2020-10-12 14:11:02,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:11:02,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 14:11:02,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161317571] [2020-10-12 14:11:02,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 14:11:02,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:11:02,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 14:11:02,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-12 14:11:02,282 INFO L87 Difference]: Start difference. First operand 16634 states and 20729 transitions. Second operand 13 states. [2020-10-12 14:11:06,978 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-10-12 14:11:07,220 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-10-12 14:11:08,537 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-10-12 14:11:09,048 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-10-12 14:11:09,256 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2020-10-12 14:11:10,755 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2020-10-12 14:11:21,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:11:21,382 INFO L93 Difference]: Finished difference Result 40280 states and 51494 transitions. [2020-10-12 14:11:21,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-12 14:11:21,386 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 734 [2020-10-12 14:11:21,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:11:21,481 INFO L225 Difference]: With dead ends: 40280 [2020-10-12 14:11:21,482 INFO L226 Difference]: Without dead ends: 24270 [2020-10-12 14:11:21,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=398, Invalid=1242, Unknown=0, NotChecked=0, Total=1640 [2020-10-12 14:11:21,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24270 states. [2020-10-12 14:11:22,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24270 to 21034. [2020-10-12 14:11:22,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21034 states. [2020-10-12 14:11:22,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21034 states to 21034 states and 26075 transitions. [2020-10-12 14:11:22,068 INFO L78 Accepts]: Start accepts. Automaton has 21034 states and 26075 transitions. Word has length 734 [2020-10-12 14:11:22,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:11:22,069 INFO L479 AbstractCegarLoop]: Abstraction has 21034 states and 26075 transitions. [2020-10-12 14:11:22,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 14:11:22,070 INFO L276 IsEmpty]: Start isEmpty. Operand 21034 states and 26075 transitions. [2020-10-12 14:11:22,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 738 [2020-10-12 14:11:22,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:11:22,089 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:11:22,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 14:11:22,090 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:11:22,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:11:22,090 INFO L82 PathProgramCache]: Analyzing trace with hash 224361913, now seen corresponding path program 1 times [2020-10-12 14:11:22,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:11:22,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626539014] [2020-10-12 14:11:22,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:11:22,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:11:22,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:22,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:26,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:27,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:11:27,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 753 [2020-10-12 14:11:27,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:11:27,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-12 14:11:27,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:11:27,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 14:11:27,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 547 [2020-10-12 14:11:27,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-12 14:11:27,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:11:27,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:11:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:11:27,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:27,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:11:27,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:11:27,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:11:27,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:11:27,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:11:27,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:11:27,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:11:27,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:11:27,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:11:27,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:11:27,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:11:27,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:27,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:11:27,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:11:27,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:11:27,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-12 14:11:27,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:11:27,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:11:27,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:11:27,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:11:27,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:11:27,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:11:27,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:11:27,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:27,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:11:27,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:11:27,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:11:27,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 14:11:27,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:11:27,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:11:27,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:11:27,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:11:27,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:11:27,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-12 14:11:27,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:11:27,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:27,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:11:27,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-12 14:11:27,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:11:27,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-12 14:11:27,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:11:27,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:11:27,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:11:27,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-12 14:11:27,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:11:27,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2020-10-12 14:11:27,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:11:27,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:28,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:11:28,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-12 14:11:28,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:11:28,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-12 14:11:28,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:11:28,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:11:28,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:11:28,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-12 14:11:28,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:11:28,715 INFO L134 CoverageAnalysis]: Checked inductivity of 952 backedges. 561 proven. 36 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2020-10-12 14:11:28,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626539014] [2020-10-12 14:11:28,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:11:28,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 14:11:28,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270739471] [2020-10-12 14:11:28,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:11:28,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:11:28,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:11:28,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:11:28,718 INFO L87 Difference]: Start difference. First operand 21034 states and 26075 transitions. Second operand 8 states.