/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/Problem12_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 13:18:00,848 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 13:18:00,851 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 13:18:00,875 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 13:18:00,876 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 13:18:00,877 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 13:18:00,878 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 13:18:00,880 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 13:18:00,881 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 13:18:00,882 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 13:18:00,883 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 13:18:00,884 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 13:18:00,884 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 13:18:00,885 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 13:18:00,886 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 13:18:00,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 13:18:00,888 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 13:18:00,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 13:18:00,890 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 13:18:00,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 13:18:00,893 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 13:18:00,894 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 13:18:00,895 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 13:18:00,896 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 13:18:00,898 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 13:18:00,899 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 13:18:00,899 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 13:18:00,900 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 13:18:00,900 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 13:18:00,901 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 13:18:00,901 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 13:18:00,902 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 13:18:00,902 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 13:18:00,903 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 13:18:00,904 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 13:18:00,904 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 13:18:00,905 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 13:18:00,905 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 13:18:00,905 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 13:18:00,909 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 13:18:00,910 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 13:18:00,911 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 13:18:00,934 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 13:18:00,934 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 13:18:00,935 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 13:18:00,936 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 13:18:00,936 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 13:18:00,936 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 13:18:00,936 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 13:18:00,937 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 13:18:00,937 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 13:18:00,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 13:18:00,937 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 13:18:00,937 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 13:18:00,937 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 13:18:00,938 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 13:18:00,938 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 13:18:00,938 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 13:18:00,938 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 13:18:00,938 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 13:18:00,939 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 13:18:00,939 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 13:18:00,939 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 13:18:00,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 13:18:00,939 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 13:18:00,940 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 13:18:00,940 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 13:18:00,940 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 13:18:00,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 13:18:00,940 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 13:18:00,940 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 13:18:00,941 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 13:18:01,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 13:18:01,269 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 13:18:01,273 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 13:18:01,274 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 13:18:01,274 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 13:18:01,275 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label04.c [2020-10-12 13:18:01,343 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63841b8f0/c6b6c671075542568c802de275e852a2/FLAGa8615d98f [2020-10-12 13:18:02,059 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 13:18:02,060 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label04.c [2020-10-12 13:18:02,092 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63841b8f0/c6b6c671075542568c802de275e852a2/FLAGa8615d98f [2020-10-12 13:18:02,173 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63841b8f0/c6b6c671075542568c802de275e852a2 [2020-10-12 13:18:02,184 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 13:18:02,186 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 13:18:02,189 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 13:18:02,189 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 13:18:02,193 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 13:18:02,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:18:02" (1/1) ... [2020-10-12 13:18:02,197 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7df3c5c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:18:02, skipping insertion in model container [2020-10-12 13:18:02,198 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:18:02" (1/1) ... [2020-10-12 13:18:02,207 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 13:18:02,371 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 13:18:03,922 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:18:03,932 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 13:18:04,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:18:04,617 INFO L208 MainTranslator]: Completed translation [2020-10-12 13:18:04,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:18:04 WrapperNode [2020-10-12 13:18:04,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 13:18:04,619 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 13:18:04,619 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 13:18:04,620 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 13:18:04,636 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:18:04" (1/1) ... [2020-10-12 13:18:04,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:18:04" (1/1) ... [2020-10-12 13:18:04,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:18:04" (1/1) ... [2020-10-12 13:18:04,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:18:04" (1/1) ... [2020-10-12 13:18:04,827 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:18:04" (1/1) ... [2020-10-12 13:18:04,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:18:04" (1/1) ... [2020-10-12 13:18:04,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:18:04" (1/1) ... [2020-10-12 13:18:04,923 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 13:18:04,923 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 13:18:04,923 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 13:18:04,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 13:18:04,925 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:18:04" (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 13:18:05,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 13:18:05,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 13:18:05,005 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 13:18:05,006 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 13:18:05,006 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 13:18:05,008 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 13:18:05,008 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 13:18:05,009 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 13:18:05,009 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 13:18:05,009 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 13:18:05,009 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 13:18:05,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 13:18:05,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 13:18:05,010 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 13:18:05,010 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 13:18:05,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 13:18:05,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 13:18:09,890 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 13:18:09,891 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 13:18:09,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:18:09 BoogieIcfgContainer [2020-10-12 13:18:09,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 13:18:09,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 13:18:09,921 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 13:18:09,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 13:18:09,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 01:18:02" (1/3) ... [2020-10-12 13:18:09,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@348d9347 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:18:09, skipping insertion in model container [2020-10-12 13:18:09,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:18:04" (2/3) ... [2020-10-12 13:18:09,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@348d9347 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:18:09, skipping insertion in model container [2020-10-12 13:18:09,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:18:09" (3/3) ... [2020-10-12 13:18:09,928 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label04.c [2020-10-12 13:18:09,938 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 13:18:09,947 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 13:18:09,962 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 13:18:09,992 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 13:18:09,992 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 13:18:09,992 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 13:18:09,992 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 13:18:09,992 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 13:18:09,993 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 13:18:09,993 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 13:18:09,993 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 13:18:10,028 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-12 13:18:10,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-12 13:18:10,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:18:10,040 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:18:10,041 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:18:10,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:18:10,047 INFO L82 PathProgramCache]: Analyzing trace with hash 983219013, now seen corresponding path program 1 times [2020-10-12 13:18:10,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:18:10,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481206952] [2020-10-12 13:18:10,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:18:10,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:10,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:10,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:10,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:18:10,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:18:10,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 428 [2020-10-12 13:18:10,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:10,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:18:10,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:18:10,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 13:18:10,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 13:18:10,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:18:10,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:10,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:10,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:10,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:18:10,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:18:10,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 13:18:10,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:10,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:18:10,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:18:10,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:18:10,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:18:10,878 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 13:18:10,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481206952] [2020-10-12 13:18:10,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:18:10,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 13:18:10,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716962649] [2020-10-12 13:18:10,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 13:18:10,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:18:10,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 13:18:10,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 13:18:10,910 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-12 13:18:19,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:18:19,671 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-12 13:18:19,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:18:19,674 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-10-12 13:18:19,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:18:19,717 INFO L225 Difference]: With dead ends: 2471 [2020-10-12 13:18:19,717 INFO L226 Difference]: Without dead ends: 1568 [2020-10-12 13:18:19,730 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 13:18:19,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-12 13:18:19,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-12 13:18:19,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-12 13:18:19,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2833 transitions. [2020-10-12 13:18:19,944 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2833 transitions. Word has length 66 [2020-10-12 13:18:19,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:18:19,946 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2833 transitions. [2020-10-12 13:18:19,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 13:18:19,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2833 transitions. [2020-10-12 13:18:19,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-12 13:18:19,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:18:19,959 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, 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] [2020-10-12 13:18:19,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 13:18:19,960 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:18:19,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:18:19,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1651203793, now seen corresponding path program 1 times [2020-10-12 13:18:19,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:18:19,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044035121] [2020-10-12 13:18:19,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:18:20,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:20,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:20,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:21,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:21,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-12 13:18:21,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:18:21,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1123 [2020-10-12 13:18:21,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:21,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:18:21,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:18:21,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 13:18:21,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:18:21,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:18:21,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:21,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:21,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:21,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:18:21,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:18:21,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:18:21,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:21,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:18:21,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:18:21,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:18:21,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:18:21,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:18:21,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:21,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:21,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:21,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:18:21,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:18:21,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-12 13:18:21,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:21,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:18:21,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:18:21,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 13:18:21,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-12 13:18:21,567 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:18:21,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044035121] [2020-10-12 13:18:21,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:18:21,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:18:21,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101913446] [2020-10-12 13:18:21,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:18:21,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:18:21,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:18:21,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:18:21,572 INFO L87 Difference]: Start difference. First operand 1553 states and 2833 transitions. Second operand 7 states. [2020-10-12 13:18:32,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:18:32,415 INFO L93 Difference]: Finished difference Result 4773 states and 8741 transitions. [2020-10-12 13:18:32,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:18:32,418 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 139 [2020-10-12 13:18:32,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:18:32,437 INFO L225 Difference]: With dead ends: 4773 [2020-10-12 13:18:32,437 INFO L226 Difference]: Without dead ends: 3226 [2020-10-12 13:18:32,442 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 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 13:18:32,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3226 states. [2020-10-12 13:18:32,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3226 to 3136. [2020-10-12 13:18:32,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3136 states. [2020-10-12 13:18:32,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3136 states to 3136 states and 4987 transitions. [2020-10-12 13:18:32,543 INFO L78 Accepts]: Start accepts. Automaton has 3136 states and 4987 transitions. Word has length 139 [2020-10-12 13:18:32,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:18:32,543 INFO L479 AbstractCegarLoop]: Abstraction has 3136 states and 4987 transitions. [2020-10-12 13:18:32,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:18:32,544 INFO L276 IsEmpty]: Start isEmpty. Operand 3136 states and 4987 transitions. [2020-10-12 13:18:32,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-12 13:18:32,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:18:32,546 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, 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] [2020-10-12 13:18:32,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 13:18:32,547 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:18:32,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:18:32,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1069198675, now seen corresponding path program 1 times [2020-10-12 13:18:32,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:18:32,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645141780] [2020-10-12 13:18:32,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:18:32,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:32,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:32,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:32,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:33,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:33,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-12 13:18:33,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:18:33,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1188 [2020-10-12 13:18:33,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:33,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:18:33,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:18:33,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-12 13:18:33,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:18:33,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:18:33,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:33,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:33,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:33,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:18:33,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:18:33,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 13:18:33,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:33,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:18:33,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:18:33,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:18:33,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:18:33,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:18:33,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:33,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:33,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:33,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:18:33,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:18:33,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-12 13:18:33,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:33,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:18:33,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:18:33,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 13:18:33,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:18:34,056 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 13:18:34,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1645141780] [2020-10-12 13:18:34,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:18:34,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:18:34,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145967823] [2020-10-12 13:18:34,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:18:34,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:18:34,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:18:34,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:18:34,059 INFO L87 Difference]: Start difference. First operand 3136 states and 4987 transitions. Second operand 6 states. [2020-10-12 13:18:44,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:18:44,565 INFO L93 Difference]: Finished difference Result 9578 states and 15594 transitions. [2020-10-12 13:18:44,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:18:44,567 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2020-10-12 13:18:44,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:18:44,605 INFO L225 Difference]: With dead ends: 9578 [2020-10-12 13:18:44,605 INFO L226 Difference]: Without dead ends: 6448 [2020-10-12 13:18:44,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:18:44,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6448 states. [2020-10-12 13:18:44,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6448 to 6404. [2020-10-12 13:18:44,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6404 states. [2020-10-12 13:18:44,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6404 states to 6404 states and 9132 transitions. [2020-10-12 13:18:44,792 INFO L78 Accepts]: Start accepts. Automaton has 6404 states and 9132 transitions. Word has length 141 [2020-10-12 13:18:44,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:18:44,793 INFO L479 AbstractCegarLoop]: Abstraction has 6404 states and 9132 transitions. [2020-10-12 13:18:44,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:18:44,793 INFO L276 IsEmpty]: Start isEmpty. Operand 6404 states and 9132 transitions. [2020-10-12 13:18:44,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-12 13:18:44,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:18:44,795 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, 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] [2020-10-12 13:18:44,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 13:18:44,796 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:18:44,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:18:44,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1763820039, now seen corresponding path program 1 times [2020-10-12 13:18:44,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:18:44,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [844096562] [2020-10-12 13:18:44,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:18:44,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:44,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:45,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:45,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:45,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-12 13:18:45,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:18:45,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 857 [2020-10-12 13:18:45,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:45,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:18:45,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:18:45,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-12 13:18:45,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:18:45,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:18:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:45,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:45,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:45,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:18:45,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:18:45,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:18:45,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:45,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:18:45,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:18:45,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:18:45,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:18:45,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:18:45,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:45,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:45,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:45,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 13:18:45,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:18:45,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-12 13:18:45,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:45,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:18:45,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:18:45,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 13:18:45,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:18:46,000 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:18:46,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [844096562] [2020-10-12 13:18:46,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:18:46,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:18:46,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672643510] [2020-10-12 13:18:46,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:18:46,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:18:46,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:18:46,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:18:46,006 INFO L87 Difference]: Start difference. First operand 6404 states and 9132 transitions. Second operand 7 states. [2020-10-12 13:18:59,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:18:59,791 INFO L93 Difference]: Finished difference Result 19691 states and 29199 transitions. [2020-10-12 13:18:59,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:18:59,793 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 151 [2020-10-12 13:18:59,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:18:59,875 INFO L225 Difference]: With dead ends: 19691 [2020-10-12 13:18:59,875 INFO L226 Difference]: Without dead ends: 13293 [2020-10-12 13:18:59,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:18:59,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13293 states. [2020-10-12 13:19:00,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13293 to 12254. [2020-10-12 13:19:00,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12254 states. [2020-10-12 13:19:00,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12254 states to 12254 states and 16968 transitions. [2020-10-12 13:19:00,395 INFO L78 Accepts]: Start accepts. Automaton has 12254 states and 16968 transitions. Word has length 151 [2020-10-12 13:19:00,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:19:00,395 INFO L479 AbstractCegarLoop]: Abstraction has 12254 states and 16968 transitions. [2020-10-12 13:19:00,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:19:00,396 INFO L276 IsEmpty]: Start isEmpty. Operand 12254 states and 16968 transitions. [2020-10-12 13:19:00,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-12 13:19:00,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:19:00,399 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, 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] [2020-10-12 13:19:00,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 13:19:00,400 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:19:00,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:19:00,400 INFO L82 PathProgramCache]: Analyzing trace with hash 982498305, now seen corresponding path program 1 times [2020-10-12 13:19:00,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:19:00,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299598329] [2020-10-12 13:19:00,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:19:00,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:19:00,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:00,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:01,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:19:01,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-12 13:19:01,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:19:01,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1070 [2020-10-12 13:19:01,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:19:01,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:19:01,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:19:01,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-12 13:19:01,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:19:01,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:19:01,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:19:01,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:01,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:19:01,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:19:01,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:19:01,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 13:19:01,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:19:01,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:19:01,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:19:01,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:19:01,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:19:01,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:19:01,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:19:01,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:01,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:19:01,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 13:19:01,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:19:01,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-12 13:19:01,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:19:01,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:19:01,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:19:01,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-12 13:19:01,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:19:02,059 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:19:02,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299598329] [2020-10-12 13:19:02,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:19:02,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 13:19:02,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691602169] [2020-10-12 13:19:02,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:19:02,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:19:02,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:19:02,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:19:02,063 INFO L87 Difference]: Start difference. First operand 12254 states and 16968 transitions. Second operand 8 states. [2020-10-12 13:19:21,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:19:21,080 INFO L93 Difference]: Finished difference Result 37490 states and 53282 transitions. [2020-10-12 13:19:21,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:19:21,082 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 179 [2020-10-12 13:19:21,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:19:21,186 INFO L225 Difference]: With dead ends: 37490 [2020-10-12 13:19:21,187 INFO L226 Difference]: Without dead ends: 25242 [2020-10-12 13:19:21,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-12 13:19:21,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25242 states. [2020-10-12 13:19:21,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25242 to 22046. [2020-10-12 13:19:21,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22046 states. [2020-10-12 13:19:21,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22046 states to 22046 states and 28152 transitions. [2020-10-12 13:19:21,746 INFO L78 Accepts]: Start accepts. Automaton has 22046 states and 28152 transitions. Word has length 179 [2020-10-12 13:19:21,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:19:21,749 INFO L479 AbstractCegarLoop]: Abstraction has 22046 states and 28152 transitions. [2020-10-12 13:19:21,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:19:21,749 INFO L276 IsEmpty]: Start isEmpty. Operand 22046 states and 28152 transitions. [2020-10-12 13:19:21,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-10-12 13:19:21,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:19:21,755 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:19:21,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 13:19:21,755 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:19:21,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:19:21,756 INFO L82 PathProgramCache]: Analyzing trace with hash 714673841, now seen corresponding path program 1 times [2020-10-12 13:19:21,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:19:21,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102929625] [2020-10-12 13:19:21,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:19:21,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:19:22,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:23,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:23,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:23,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:19:23,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-12 13:19:23,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:19:23,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2027 [2020-10-12 13:19:23,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:19:23,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:19:23,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-12 13:19:23,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 13:19:23,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:19:23,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:19:23,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:19:23,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:23,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:19:23,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:19:23,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:19:23,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 13:19:23,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:19:23,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:19:23,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:19:23,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:19:23,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:19:23,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:19:24,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:19:24,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:24,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:19:24,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 13:19:24,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:19:24,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-12 13:19:24,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:19:24,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:19:24,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:19:24,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-12 13:19:24,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:19:24,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-12 13:19:24,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:19:24,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:24,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:19:24,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:19:24,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:19:24,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-12 13:19:24,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:19:24,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:19:24,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:19:24,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 13:19:24,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:19:24,502 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 13:19:24,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102929625] [2020-10-12 13:19:24,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:19:24,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:19:24,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531711491] [2020-10-12 13:19:24,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:19:24,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:19:24,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:19:24,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:19:24,506 INFO L87 Difference]: Start difference. First operand 22046 states and 28152 transitions. Second operand 7 states. [2020-10-12 13:19:44,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:19:44,996 INFO L93 Difference]: Finished difference Result 56324 states and 76798 transitions. [2020-10-12 13:19:44,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:19:44,999 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 286 [2020-10-12 13:19:45,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:19:45,147 INFO L225 Difference]: With dead ends: 56324 [2020-10-12 13:19:45,148 INFO L226 Difference]: Without dead ends: 34284 [2020-10-12 13:19:45,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:19:45,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34284 states. [2020-10-12 13:19:46,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34284 to 34035. [2020-10-12 13:19:46,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34035 states. [2020-10-12 13:19:46,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34035 states to 34035 states and 45024 transitions. [2020-10-12 13:19:46,083 INFO L78 Accepts]: Start accepts. Automaton has 34035 states and 45024 transitions. Word has length 286 [2020-10-12 13:19:46,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:19:46,085 INFO L479 AbstractCegarLoop]: Abstraction has 34035 states and 45024 transitions. [2020-10-12 13:19:46,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:19:46,086 INFO L276 IsEmpty]: Start isEmpty. Operand 34035 states and 45024 transitions. [2020-10-12 13:19:46,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-10-12 13:19:46,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:19:46,094 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 13:19:46,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 13:19:46,095 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:19:46,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:19:46,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1742589450, now seen corresponding path program 1 times [2020-10-12 13:19:46,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:19:46,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312783209] [2020-10-12 13:19:46,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:19:46,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:19:46,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:46,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:48,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:19:48,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-12 13:19:48,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:19:48,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2634 [2020-10-12 13:19:48,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:19:48,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:19:48,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:19:48,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-12 13:19:48,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:19:48,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:19:48,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:19:48,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:48,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:19:48,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:19:48,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:19:48,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:19:48,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:19:48,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:19:48,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:19:48,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:19:48,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:19:48,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:19:48,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:19:49,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:49,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:19:49,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-12 13:19:49,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:19:49,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-10-12 13:19:49,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:19:49,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:19:49,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:19:49,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-12 13:19:49,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:19:49,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-12 13:19:49,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:19:49,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:49,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:19:49,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:19:49,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:19:49,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-12 13:19:49,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:19:49,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:19:49,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-12 13:19:49,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:19:49,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:19:50,320 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 118 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 13:19:50,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [312783209] [2020-10-12 13:19:50,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:19:50,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:19:50,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071351706] [2020-10-12 13:19:50,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:19:50,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:19:50,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:19:50,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:19:50,325 INFO L87 Difference]: Start difference. First operand 34035 states and 45024 transitions. Second operand 7 states. [2020-10-12 13:20:03,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:20:03,733 INFO L93 Difference]: Finished difference Result 68537 states and 91244 transitions. [2020-10-12 13:20:03,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:20:03,736 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 287 [2020-10-12 13:20:03,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:20:03,862 INFO L225 Difference]: With dead ends: 68537 [2020-10-12 13:20:03,862 INFO L226 Difference]: Without dead ends: 35305 [2020-10-12 13:20:03,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:20:03,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35305 states. [2020-10-12 13:20:04,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35305 to 35103. [2020-10-12 13:20:04,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35103 states. [2020-10-12 13:20:04,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35103 states to 35103 states and 46385 transitions. [2020-10-12 13:20:04,694 INFO L78 Accepts]: Start accepts. Automaton has 35103 states and 46385 transitions. Word has length 287 [2020-10-12 13:20:04,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:20:04,695 INFO L479 AbstractCegarLoop]: Abstraction has 35103 states and 46385 transitions. [2020-10-12 13:20:04,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:20:04,695 INFO L276 IsEmpty]: Start isEmpty. Operand 35103 states and 46385 transitions. [2020-10-12 13:20:04,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2020-10-12 13:20:04,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:20:04,705 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:20:04,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 13:20:04,705 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:20:04,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:20:04,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1685163122, now seen corresponding path program 1 times [2020-10-12 13:20:04,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:20:04,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082187965] [2020-10-12 13:20:04,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:20:04,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:20:04,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:04,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:05,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:06,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:20:06,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 376 [2020-10-12 13:20:06,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:20:06,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2198 [2020-10-12 13:20:06,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:20:06,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:20:06,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-12 13:20:06,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 13:20:06,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:20:07,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:20:07,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:20:07,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:07,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:20:07,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:20:07,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:20:07,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:20:07,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:20:07,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:20:07,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:20:07,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:20:07,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:20:07,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:20:07,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:20:07,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:07,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:20:07,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:20:07,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:20:07,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-12 13:20:07,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:20:07,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:20:07,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:20:07,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 13:20:07,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:20:07,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 13:20:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:20:07,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:07,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:07,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:20:07,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-12 13:20:07,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:20:07,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 422 [2020-10-12 13:20:07,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:20:07,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:20:07,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:20:07,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-12 13:20:07,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:20:08,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-10-12 13:20:08,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:20:08,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:08,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:20:08,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:20:08,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:20:08,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 13:20:08,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:20:08,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:20:08,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-12 13:20:08,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:20:08,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:20:08,896 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 253 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-12 13:20:08,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082187965] [2020-10-12 13:20:08,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:20:08,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:20:08,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978294995] [2020-10-12 13:20:08,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:20:08,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:20:08,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:20:08,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:20:08,901 INFO L87 Difference]: Start difference. First operand 35103 states and 46385 transitions. Second operand 6 states. [2020-10-12 13:20:21,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:20:21,514 INFO L93 Difference]: Finished difference Result 69008 states and 91901 transitions. [2020-10-12 13:20:21,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:20:21,517 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 362 [2020-10-12 13:20:21,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:20:21,656 INFO L225 Difference]: With dead ends: 69008 [2020-10-12 13:20:21,656 INFO L226 Difference]: Without dead ends: 34103 [2020-10-12 13:20:21,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-12 13:20:21,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34103 states. [2020-10-12 13:20:22,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34103 to 34003. [2020-10-12 13:20:22,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34003 states. [2020-10-12 13:20:22,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34003 states to 34003 states and 43258 transitions. [2020-10-12 13:20:22,310 INFO L78 Accepts]: Start accepts. Automaton has 34003 states and 43258 transitions. Word has length 362 [2020-10-12 13:20:22,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:20:22,311 INFO L479 AbstractCegarLoop]: Abstraction has 34003 states and 43258 transitions. [2020-10-12 13:20:22,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:20:22,311 INFO L276 IsEmpty]: Start isEmpty. Operand 34003 states and 43258 transitions. [2020-10-12 13:20:22,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2020-10-12 13:20:22,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:20:22,323 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, 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, 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] [2020-10-12 13:20:22,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 13:20:22,323 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:20:22,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:20:22,324 INFO L82 PathProgramCache]: Analyzing trace with hash -146709583, now seen corresponding path program 1 times [2020-10-12 13:20:22,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:20:22,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896784705] [2020-10-12 13:20:22,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:20:22,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:20:22,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:22,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:23,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:24,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:27,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:20:27,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 411 [2020-10-12 13:20:27,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:20:27,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-12 13:20:27,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:20:27,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:20:27,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-12 13:20:27,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-12 13:20:27,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:20:27,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:20:27,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:20:27,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:27,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:20:27,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:20:27,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:20:27,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:20:27,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:20:27,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:20:27,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:20:27,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:20:27,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:20:27,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:20:27,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:20:27,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:27,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:20:27,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 13:20:27,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:20:27,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-12 13:20:27,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:20:27,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:20:27,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:20:27,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-12 13:20:27,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:20:27,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-12 13:20:27,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:20:27,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:27,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:20:27,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 13:20:27,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:20:27,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-12 13:20:27,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:20:27,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:20:27,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:20:27,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-12 13:20:27,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:20:28,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-12 13:20:28,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:20:28,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:28,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:20:28,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 13:20:28,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:20:28,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-12 13:20:28,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:20:28,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:20:28,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:20:28,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-12 13:20:28,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:20:28,370 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 357 proven. 6 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-12 13:20:28,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1896784705] [2020-10-12 13:20:28,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:20:28,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:20:28,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621822577] [2020-10-12 13:20:28,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:20:28,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:20:28,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:20:28,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:20:28,380 INFO L87 Difference]: Start difference. First operand 34003 states and 43258 transitions. Second operand 7 states. [2020-10-12 13:20:50,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:20:50,079 INFO L93 Difference]: Finished difference Result 87359 states and 116146 transitions. [2020-10-12 13:20:50,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:20:50,081 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 397 [2020-10-12 13:20:50,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:20:50,303 INFO L225 Difference]: With dead ends: 87359 [2020-10-12 13:20:50,304 INFO L226 Difference]: Without dead ends: 54129 [2020-10-12 13:20:50,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:20:50,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54129 states. [2020-10-12 13:20:51,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54129 to 53891. [2020-10-12 13:20:51,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53891 states. [2020-10-12 13:20:51,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53891 states to 53891 states and 68922 transitions. [2020-10-12 13:20:51,932 INFO L78 Accepts]: Start accepts. Automaton has 53891 states and 68922 transitions. Word has length 397 [2020-10-12 13:20:51,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:20:51,933 INFO L479 AbstractCegarLoop]: Abstraction has 53891 states and 68922 transitions. [2020-10-12 13:20:51,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:20:51,934 INFO L276 IsEmpty]: Start isEmpty. Operand 53891 states and 68922 transitions. [2020-10-12 13:20:51,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2020-10-12 13:20:51,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:20:51,952 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, 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, 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] [2020-10-12 13:20:51,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 13:20:51,953 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:20:51,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:20:51,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1778339177, now seen corresponding path program 1 times [2020-10-12 13:20:51,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:20:51,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992289944] [2020-10-12 13:20:51,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:20:52,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:20:52,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:52,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:53,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:53,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:56,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:20:56,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 415 [2020-10-12 13:20:56,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:20:56,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4398 [2020-10-12 13:20:56,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:20:56,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:20:56,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-12 13:20:56,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-12 13:20:56,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:20:56,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:20:56,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:20:56,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:56,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:20:56,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:20:56,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:20:56,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:20:56,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:20:56,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:20:56,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:20:56,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:20:56,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:20:56,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:20:56,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:20:56,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:56,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:20:56,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-12 13:20:56,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:20:56,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-12 13:20:56,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:20:56,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:20:56,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:20:56,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-12 13:20:56,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:20:56,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-12 13:20:56,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:20:56,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:56,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:56,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:20:56,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 13:20:56,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:20:56,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-12 13:20:56,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:20:56,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:20:56,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:20:56,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-12 13:20:56,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:20:56,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-12 13:20:56,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:20:56,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:57,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:20:57,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 13:20:57,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:20:57,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-12 13:20:57,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:20:57,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:20:57,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:20:57,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-12 13:20:57,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:20:57,422 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 357 proven. 88 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-12 13:20:57,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [992289944] [2020-10-12 13:20:57,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:20:57,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 13:20:57,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638098661] [2020-10-12 13:20:57,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 13:20:57,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:20:57,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 13:20:57,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-12 13:20:57,426 INFO L87 Difference]: Start difference. First operand 53891 states and 68922 transitions. Second operand 9 states. [2020-10-12 13:21:28,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:21:28,803 INFO L93 Difference]: Finished difference Result 147784 states and 194687 transitions. [2020-10-12 13:21:28,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:21:28,806 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 401 [2020-10-12 13:21:28,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:21:29,231 INFO L225 Difference]: With dead ends: 147784 [2020-10-12 13:21:29,231 INFO L226 Difference]: Without dead ends: 94666 [2020-10-12 13:21:29,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-12 13:21:29,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94666 states. [2020-10-12 13:21:31,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94666 to 92950. [2020-10-12 13:21:31,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92950 states. [2020-10-12 13:21:31,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92950 states to 92950 states and 119784 transitions. [2020-10-12 13:21:31,786 INFO L78 Accepts]: Start accepts. Automaton has 92950 states and 119784 transitions. Word has length 401 [2020-10-12 13:21:31,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:21:31,787 INFO L479 AbstractCegarLoop]: Abstraction has 92950 states and 119784 transitions. [2020-10-12 13:21:31,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 13:21:31,787 INFO L276 IsEmpty]: Start isEmpty. Operand 92950 states and 119784 transitions. [2020-10-12 13:21:31,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2020-10-12 13:21:31,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:21:31,800 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:21:31,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 13:21:31,801 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:21:31,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:21:31,802 INFO L82 PathProgramCache]: Analyzing trace with hash -2091339431, now seen corresponding path program 1 times [2020-10-12 13:21:31,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:21:31,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [107617113] [2020-10-12 13:21:31,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:21:31,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:31,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:32,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:36,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:36,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 423 [2020-10-12 13:21:36,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:21:36,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 13:21:36,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:36,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 13:21:36,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-12 13:21:36,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-12 13:21:36,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:21:37,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:21:37,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:37,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:37,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:37,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:21:37,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:21:37,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 13:21:37,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:37,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:21:37,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:21:37,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:21:37,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:21:37,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:21:37,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:37,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:37,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:37,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-12 13:21:37,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:21:37,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-12 13:21:37,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:37,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:21:37,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:21:37,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-12 13:21:37,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:21:37,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-12 13:21:37,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:37,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:37,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:37,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 13:21:37,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:21:37,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-12 13:21:37,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:37,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:21:37,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:21:37,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-12 13:21:37,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:21:38,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-12 13:21:38,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:38,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:38,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:38,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:21:38,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:21:38,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-12 13:21:38,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:38,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:21:38,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:21:38,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 13:21:38,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:21:38,586 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 369 proven. 72 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 13:21:38,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [107617113] [2020-10-12 13:21:38,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:21:38,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 13:21:38,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711274149] [2020-10-12 13:21:38,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 13:21:38,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:21:38,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 13:21:38,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:21:38,589 INFO L87 Difference]: Start difference. First operand 92950 states and 119784 transitions. Second operand 10 states.