/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 02:43:52,834 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 02:43:52,838 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 02:43:52,884 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 02:43:52,884 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 02:43:52,896 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 02:43:52,898 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 02:43:52,902 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 02:43:52,905 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 02:43:52,909 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 02:43:52,910 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 02:43:52,911 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 02:43:52,911 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 02:43:52,915 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 02:43:52,918 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 02:43:52,920 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 02:43:52,922 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 02:43:52,924 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 02:43:52,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 02:43:52,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 02:43:52,937 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 02:43:52,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 02:43:52,939 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 02:43:52,941 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 02:43:52,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 02:43:52,946 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 02:43:52,946 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 02:43:52,950 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 02:43:52,950 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 02:43:52,951 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 02:43:52,952 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 02:43:52,952 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 02:43:52,953 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 02:43:52,954 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 02:43:52,955 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 02:43:52,955 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 02:43:52,956 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 02:43:52,956 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 02:43:52,957 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 02:43:52,958 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 02:43:52,959 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 02:43:52,960 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 02:43:52,987 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 02:43:52,988 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 02:43:52,989 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 02:43:52,989 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 02:43:52,990 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 02:43:52,990 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 02:43:52,990 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 02:43:52,990 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 02:43:52,990 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 02:43:52,990 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 02:43:52,991 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 02:43:52,991 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 02:43:52,991 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 02:43:52,991 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 02:43:52,991 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 02:43:52,992 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 02:43:52,992 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 02:43:52,992 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 02:43:52,992 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 02:43:52,992 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 02:43:52,992 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 02:43:52,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 02:43:52,993 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 02:43:52,993 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 02:43:52,993 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 02:43:52,993 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 02:43:52,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 02:43:52,994 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 02:43:52,994 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 02:43:52,994 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 02:43:53,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 02:43:53,339 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 02:43:53,343 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 02:43:53,345 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 02:43:53,345 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 02:43:53,346 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label10.c [2020-10-14 02:43:53,417 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c98e0775f/d4adf52fa1e14582a2b8eadc0fe04982/FLAG8ad1f60bb [2020-10-14 02:43:54,256 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 02:43:54,258 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label10.c [2020-10-14 02:43:54,294 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c98e0775f/d4adf52fa1e14582a2b8eadc0fe04982/FLAG8ad1f60bb [2020-10-14 02:43:54,754 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c98e0775f/d4adf52fa1e14582a2b8eadc0fe04982 [2020-10-14 02:43:54,766 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 02:43:54,768 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 02:43:54,769 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 02:43:54,770 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 02:43:54,774 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 02:43:54,775 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:43:54" (1/1) ... [2020-10-14 02:43:54,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f7f651c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:43:54, skipping insertion in model container [2020-10-14 02:43:54,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:43:54" (1/1) ... [2020-10-14 02:43:54,788 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 02:43:54,939 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 02:43:56,580 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:43:56,590 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 02:43:57,264 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:43:57,297 INFO L208 MainTranslator]: Completed translation [2020-10-14 02:43:57,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:43:57 WrapperNode [2020-10-14 02:43:57,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 02:43:57,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 02:43:57,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 02:43:57,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 02:43:57,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:43:57" (1/1) ... [2020-10-14 02:43:57,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:43:57" (1/1) ... [2020-10-14 02:43:57,380 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:43:57" (1/1) ... [2020-10-14 02:43:57,381 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:43:57" (1/1) ... [2020-10-14 02:43:57,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:43:57" (1/1) ... [2020-10-14 02:43:57,509 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:43:57" (1/1) ... [2020-10-14 02:43:57,546 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:43:57" (1/1) ... [2020-10-14 02:43:57,569 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 02:43:57,570 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 02:43:57,570 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 02:43:57,570 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 02:43:57,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:43:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 02:43:57,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 02:43:57,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 02:43:57,642 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 02:43:57,642 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 02:43:57,642 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 02:43:57,642 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 02:43:57,642 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 02:43:57,643 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 02:43:57,643 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 02:43:57,643 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 02:43:57,644 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 02:43:57,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 02:43:57,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 02:43:57,644 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 02:43:57,644 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 02:43:57,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 02:43:57,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 02:44:02,744 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 02:44:02,747 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 02:44:02,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:44:02 BoogieIcfgContainer [2020-10-14 02:44:02,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 02:44:02,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 02:44:02,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 02:44:02,773 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 02:44:02,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:43:54" (1/3) ... [2020-10-14 02:44:02,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32710ae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:44:02, skipping insertion in model container [2020-10-14 02:44:02,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:43:57" (2/3) ... [2020-10-14 02:44:02,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32710ae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:44:02, skipping insertion in model container [2020-10-14 02:44:02,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:44:02" (3/3) ... [2020-10-14 02:44:02,778 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label10.c [2020-10-14 02:44:02,788 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 02:44:02,797 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 02:44:02,812 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 02:44:02,840 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 02:44:02,840 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 02:44:02,840 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 02:44:02,840 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 02:44:02,841 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 02:44:02,841 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 02:44:02,841 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 02:44:02,841 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 02:44:02,875 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 02:44:02,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 02:44:02,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:44:02,884 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] [2020-10-14 02:44:02,884 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:44:02,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:44:02,891 INFO L82 PathProgramCache]: Analyzing trace with hash 384114234, now seen corresponding path program 1 times [2020-10-14 02:44:02,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:44:02,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065235149] [2020-10-14 02:44:02,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:44:03,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:03,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:03,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:03,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 02:44:03,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:44:03,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 383 [2020-10-14 02:44:03,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:03,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:03,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 02:44:03,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:44:03,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 02:44:03,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 02:44:03,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:44:03,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:03,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:03,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:03,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:44:03,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:44:03,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 02:44:03,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:03,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:03,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:44:03,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:44:03,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:44:03,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:44:03,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:44:03,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065235149] [2020-10-14 02:44:03,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 02:44:03,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 02:44:03,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263625209] [2020-10-14 02:44:03,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 02:44:03,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:44:03,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 02:44:03,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 02:44:03,611 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-14 02:44:11,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:44:11,739 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-14 02:44:11,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:44:11,741 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-10-14 02:44:11,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:44:11,780 INFO L225 Difference]: With dead ends: 2471 [2020-10-14 02:44:11,781 INFO L226 Difference]: Without dead ends: 1568 [2020-10-14 02:44:11,795 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 [2020-10-14 02:44:11,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-14 02:44:11,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-14 02:44:11,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-14 02:44:11,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2725 transitions. [2020-10-14 02:44:11,966 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2725 transitions. Word has length 33 [2020-10-14 02:44:11,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:44:11,967 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2725 transitions. [2020-10-14 02:44:11,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 02:44:11,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2725 transitions. [2020-10-14 02:44:11,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 02:44:11,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:44:11,973 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:44:11,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 02:44:11,974 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:44:11,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:44:11,975 INFO L82 PathProgramCache]: Analyzing trace with hash -2121288409, now seen corresponding path program 1 times [2020-10-14 02:44:11,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:44:11,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314979171] [2020-10-14 02:44:11,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:44:12,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:12,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:12,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:12,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:13,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:13,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 02:44:13,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:44:13,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 944 [2020-10-14 02:44:13,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:13,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:13,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:44:13,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 02:44:13,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 02:44:13,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:44:13,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:44:13,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:13,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:13,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:13,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:44:13,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:44:13,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 02:44:13,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:13,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:13,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:44:13,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:44:13,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:44:13,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:44:13,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:44:13,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:13,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:13,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:13,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 02:44:13,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:44:13,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 02:44:13,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:13,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:13,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:44:13,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:44:13,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 02:44:13,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:44:13,242 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:44:13,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314979171] [2020-10-14 02:44:13,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:44:13,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:44:13,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117224707] [2020-10-14 02:44:13,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:44:13,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:44:13,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:44:13,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:44:13,247 INFO L87 Difference]: Start difference. First operand 1553 states and 2725 transitions. Second operand 5 states. [2020-10-14 02:44:23,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:44:23,646 INFO L93 Difference]: Finished difference Result 4672 states and 8262 transitions. [2020-10-14 02:44:23,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:44:23,647 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-14 02:44:23,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:44:23,672 INFO L225 Difference]: With dead ends: 4672 [2020-10-14 02:44:23,673 INFO L226 Difference]: Without dead ends: 3125 [2020-10-14 02:44:23,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:44:23,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states. [2020-10-14 02:44:23,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 3109. [2020-10-14 02:44:23,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3109 states. [2020-10-14 02:44:23,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3109 states to 3109 states and 4681 transitions. [2020-10-14 02:44:23,756 INFO L78 Accepts]: Start accepts. Automaton has 3109 states and 4681 transitions. Word has length 102 [2020-10-14 02:44:23,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:44:23,758 INFO L479 AbstractCegarLoop]: Abstraction has 3109 states and 4681 transitions. [2020-10-14 02:44:23,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:44:23,759 INFO L276 IsEmpty]: Start isEmpty. Operand 3109 states and 4681 transitions. [2020-10-14 02:44:23,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 02:44:23,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:44:23,769 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:44:23,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 02:44:23,769 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:44:23,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:44:23,770 INFO L82 PathProgramCache]: Analyzing trace with hash 741420226, now seen corresponding path program 1 times [2020-10-14 02:44:23,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:44:23,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [234368172] [2020-10-14 02:44:23,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:44:23,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:23,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:24,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:24,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:24,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:24,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 02:44:24,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:44:24,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 724 [2020-10-14 02:44:24,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:24,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:24,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:44:24,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 02:44:24,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 02:44:24,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:44:24,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:44:24,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:24,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:24,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:24,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:44:24,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:44:24,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:44:24,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:24,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:24,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:44:24,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:44:24,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:44:24,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:44:24,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:44:24,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:24,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:24,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:24,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 02:44:24,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:44:24,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-14 02:44:24,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:24,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:24,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:44:24,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:44:24,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 02:44:24,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:44:24,870 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:44:24,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [234368172] [2020-10-14 02:44:24,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:44:24,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:44:24,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451017471] [2020-10-14 02:44:24,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:44:24,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:44:24,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:44:24,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:44:24,874 INFO L87 Difference]: Start difference. First operand 3109 states and 4681 transitions. Second operand 5 states. [2020-10-14 02:44:37,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:44:37,475 INFO L93 Difference]: Finished difference Result 9330 states and 14245 transitions. [2020-10-14 02:44:37,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:44:37,476 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-14 02:44:37,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:44:37,517 INFO L225 Difference]: With dead ends: 9330 [2020-10-14 02:44:37,518 INFO L226 Difference]: Without dead ends: 6227 [2020-10-14 02:44:37,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:44:37,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6227 states. [2020-10-14 02:44:37,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6227 to 6223. [2020-10-14 02:44:37,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6223 states. [2020-10-14 02:44:37,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6223 states to 6223 states and 8474 transitions. [2020-10-14 02:44:37,750 INFO L78 Accepts]: Start accepts. Automaton has 6223 states and 8474 transitions. Word has length 103 [2020-10-14 02:44:37,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:44:37,758 INFO L479 AbstractCegarLoop]: Abstraction has 6223 states and 8474 transitions. [2020-10-14 02:44:37,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:44:37,759 INFO L276 IsEmpty]: Start isEmpty. Operand 6223 states and 8474 transitions. [2020-10-14 02:44:37,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-14 02:44:37,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:44:37,766 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:44:37,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 02:44:37,767 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:44:37,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:44:37,768 INFO L82 PathProgramCache]: Analyzing trace with hash -655537381, now seen corresponding path program 1 times [2020-10-14 02:44:37,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:44:37,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [583504317] [2020-10-14 02:44:37,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:44:37,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:37,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:38,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:38,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:38,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:38,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 02:44:38,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:44:38,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 913 [2020-10-14 02:44:38,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:38,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:38,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:44:38,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 02:44:38,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 02:44:38,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:44:38,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:44:38,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:38,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:38,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:38,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:44:38,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:44:38,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:44:38,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:38,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:38,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:44:38,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:44:38,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:44:38,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:44:38,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:44:38,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:38,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:38,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:38,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 02:44:38,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:44:38,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 02:44:38,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:38,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:38,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:44:38,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:44:38,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 02:44:38,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:44:38,954 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:44:38,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [583504317] [2020-10-14 02:44:38,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:44:38,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:44:38,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277010472] [2020-10-14 02:44:38,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:44:38,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:44:38,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:44:38,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:44:38,957 INFO L87 Difference]: Start difference. First operand 6223 states and 8474 transitions. Second operand 5 states. [2020-10-14 02:44:53,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:44:53,684 INFO L93 Difference]: Finished difference Result 18653 states and 25928 transitions. [2020-10-14 02:44:53,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:44:53,688 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-14 02:44:53,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:44:53,760 INFO L225 Difference]: With dead ends: 18653 [2020-10-14 02:44:53,760 INFO L226 Difference]: Without dead ends: 12436 [2020-10-14 02:44:53,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:44:53,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12436 states. [2020-10-14 02:44:54,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12436 to 12432. [2020-10-14 02:44:54,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12432 states. [2020-10-14 02:44:54,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12432 states to 12432 states and 16167 transitions. [2020-10-14 02:44:54,170 INFO L78 Accepts]: Start accepts. Automaton has 12432 states and 16167 transitions. Word has length 112 [2020-10-14 02:44:54,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:44:54,172 INFO L479 AbstractCegarLoop]: Abstraction has 12432 states and 16167 transitions. [2020-10-14 02:44:54,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:44:54,173 INFO L276 IsEmpty]: Start isEmpty. Operand 12432 states and 16167 transitions. [2020-10-14 02:44:54,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-14 02:44:54,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:44:54,178 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:44:54,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 02:44:54,178 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:44:54,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:44:54,179 INFO L82 PathProgramCache]: Analyzing trace with hash 830986246, now seen corresponding path program 1 times [2020-10-14 02:44:54,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:44:54,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1459837784] [2020-10-14 02:44:54,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:44:54,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:54,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:54,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:55,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:55,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 02:44:55,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:44:55,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 916 [2020-10-14 02:44:55,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:55,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:55,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:44:55,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-14 02:44:55,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 02:44:55,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:44:55,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:44:55,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:55,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:55,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:55,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:44:55,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:44:55,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:44:55,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:55,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:55,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:44:55,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:44:55,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:44:55,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:44:55,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:44:55,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:55,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:55,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:55,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 02:44:55,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:44:55,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 02:44:55,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:55,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:55,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:44:55,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:44:55,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 02:44:55,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 02:44:55,381 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:44:55,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1459837784] [2020-10-14 02:44:55,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:44:55,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:44:55,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320192732] [2020-10-14 02:44:55,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:44:55,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:44:55,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:44:55,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:44:55,384 INFO L87 Difference]: Start difference. First operand 12432 states and 16167 transitions. Second operand 5 states. [2020-10-14 02:45:08,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:45:08,027 INFO L93 Difference]: Finished difference Result 35715 states and 47768 transitions. [2020-10-14 02:45:08,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:45:08,029 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-14 02:45:08,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:45:08,133 INFO L225 Difference]: With dead ends: 35715 [2020-10-14 02:45:08,134 INFO L226 Difference]: Without dead ends: 23289 [2020-10-14 02:45:08,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:45:08,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23289 states. [2020-10-14 02:45:08,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23289 to 23285. [2020-10-14 02:45:08,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23285 states. [2020-10-14 02:45:08,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23285 states to 23285 states and 30529 transitions. [2020-10-14 02:45:08,727 INFO L78 Accepts]: Start accepts. Automaton has 23285 states and 30529 transitions. Word has length 121 [2020-10-14 02:45:08,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:45:08,728 INFO L479 AbstractCegarLoop]: Abstraction has 23285 states and 30529 transitions. [2020-10-14 02:45:08,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:45:08,728 INFO L276 IsEmpty]: Start isEmpty. Operand 23285 states and 30529 transitions. [2020-10-14 02:45:08,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-14 02:45:08,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:45:08,735 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 02:45:08,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 02:45:08,736 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:45:08,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:45:08,736 INFO L82 PathProgramCache]: Analyzing trace with hash 614639726, now seen corresponding path program 1 times [2020-10-14 02:45:08,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:45:08,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67151844] [2020-10-14 02:45:08,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:45:08,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:45:08,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:08,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:09,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:10,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:11,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:45:11,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-14 02:45:11,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:45:11,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3152 [2020-10-14 02:45:11,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:45:11,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:45:11,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:45:11,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 02:45:11,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 02:45:11,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:45:12,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:45:12,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:45:12,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:12,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:45:12,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:45:12,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:45:12,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:45:12,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:45:12,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:45:12,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:45:12,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:45:12,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:45:12,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:45:12,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:45:12,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:45:12,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:12,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:45:12,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 02:45:12,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:45:12,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 02:45:12,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:45:12,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:45:12,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:45:12,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:45:12,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 02:45:12,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:45:12,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 02:45:12,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:45:12,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:12,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:45:12,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 02:45:12,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:45:12,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-14 02:45:12,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:45:12,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:45:12,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:45:12,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:45:12,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 02:45:12,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:45:12,549 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:45:12,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67151844] [2020-10-14 02:45:12,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:45:12,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:45:12,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002932289] [2020-10-14 02:45:12,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:45:12,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:45:12,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:45:12,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:45:12,556 INFO L87 Difference]: Start difference. First operand 23285 states and 30529 transitions. Second operand 7 states. [2020-10-14 02:45:34,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:45:34,381 INFO L93 Difference]: Finished difference Result 57289 states and 80552 transitions. [2020-10-14 02:45:34,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:45:34,383 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 217 [2020-10-14 02:45:34,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:45:34,603 INFO L225 Difference]: With dead ends: 57289 [2020-10-14 02:45:34,603 INFO L226 Difference]: Without dead ends: 34010 [2020-10-14 02:45:34,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:45:34,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34010 states. [2020-10-14 02:45:35,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34010 to 33696. [2020-10-14 02:45:35,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33696 states. [2020-10-14 02:45:35,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33696 states to 33696 states and 43935 transitions. [2020-10-14 02:45:35,539 INFO L78 Accepts]: Start accepts. Automaton has 33696 states and 43935 transitions. Word has length 217 [2020-10-14 02:45:35,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:45:35,540 INFO L479 AbstractCegarLoop]: Abstraction has 33696 states and 43935 transitions. [2020-10-14 02:45:35,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:45:35,540 INFO L276 IsEmpty]: Start isEmpty. Operand 33696 states and 43935 transitions. [2020-10-14 02:45:35,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-14 02:45:35,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:45:35,550 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 02:45:35,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 02:45:35,551 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:45:35,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:45:35,552 INFO L82 PathProgramCache]: Analyzing trace with hash -49636158, now seen corresponding path program 1 times [2020-10-14 02:45:35,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:45:35,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1475951491] [2020-10-14 02:45:35,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:45:35,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:45:35,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:35,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:37,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:37,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:40,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:45:40,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-14 02:45:40,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:45:40,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4666 [2020-10-14 02:45:40,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:45:40,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:45:40,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:45:40,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-14 02:45:40,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 02:45:40,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:45:40,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:45:40,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:45:40,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:40,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:45:40,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:45:40,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:45:40,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:45:40,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:45:40,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:45:40,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:45:40,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:45:40,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:45:40,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:45:40,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:45:40,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:45:40,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:40,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:45:40,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 02:45:40,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:45:40,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 02:45:40,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:45:40,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:45:40,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:45:40,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:45:40,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 02:45:40,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:45:40,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-14 02:45:40,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:45:40,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:40,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:45:40,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 02:45:40,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:45:40,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-14 02:45:40,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:45:40,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:45:40,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:45:40,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:45:40,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 02:45:40,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:45:40,745 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 134 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:45:40,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1475951491] [2020-10-14 02:45:40,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:45:40,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:45:40,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119703776] [2020-10-14 02:45:40,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:45:40,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:45:40,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:45:40,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:45:40,748 INFO L87 Difference]: Start difference. First operand 33696 states and 43935 transitions. Second operand 7 states. [2020-10-14 02:46:04,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:46:04,913 INFO L93 Difference]: Finished difference Result 75473 states and 101950 transitions. [2020-10-14 02:46:04,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:46:04,915 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 223 [2020-10-14 02:46:04,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:46:05,113 INFO L225 Difference]: With dead ends: 75473 [2020-10-14 02:46:05,114 INFO L226 Difference]: Without dead ends: 41783 [2020-10-14 02:46:05,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:46:05,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41783 states. [2020-10-14 02:46:06,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41783 to 37115. [2020-10-14 02:46:06,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37115 states. [2020-10-14 02:46:06,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37115 states to 37115 states and 46298 transitions. [2020-10-14 02:46:06,441 INFO L78 Accepts]: Start accepts. Automaton has 37115 states and 46298 transitions. Word has length 223 [2020-10-14 02:46:06,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:46:06,442 INFO L479 AbstractCegarLoop]: Abstraction has 37115 states and 46298 transitions. [2020-10-14 02:46:06,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:46:06,442 INFO L276 IsEmpty]: Start isEmpty. Operand 37115 states and 46298 transitions. [2020-10-14 02:46:06,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-14 02:46:06,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:46:06,458 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 02:46:06,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 02:46:06,459 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:46:06,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:46:06,459 INFO L82 PathProgramCache]: Analyzing trace with hash -323633418, now seen corresponding path program 1 times [2020-10-14 02:46:06,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:46:06,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339787490] [2020-10-14 02:46:06,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:46:06,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:06,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:06,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:07,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:09,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:09,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-14 02:46:09,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:46:09,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3240 [2020-10-14 02:46:09,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:09,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:09,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:46:09,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 02:46:09,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 02:46:09,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:46:09,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:46:09,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:09,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:09,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:09,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:46:09,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:09,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:46:09,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:09,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:09,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:46:09,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:46:09,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:46:09,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:46:09,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:46:09,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:09,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:10,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:10,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 02:46:10,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:10,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 02:46:10,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:10,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:10,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:46:10,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:46:10,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 02:46:10,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:46:10,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-14 02:46:10,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:10,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:10,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:10,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 02:46:10,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:10,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-14 02:46:10,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:10,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:10,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:46:10,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:46:10,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 02:46:10,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:46:10,373 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 146 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:46:10,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339787490] [2020-10-14 02:46:10,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:46:10,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 02:46:10,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876689153] [2020-10-14 02:46:10,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 02:46:10,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:46:10,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 02:46:10,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 02:46:10,377 INFO L87 Difference]: Start difference. First operand 37115 states and 46298 transitions. Second operand 8 states. [2020-10-14 02:46:33,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:46:33,427 INFO L93 Difference]: Finished difference Result 87551 states and 114384 transitions. [2020-10-14 02:46:33,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 02:46:33,429 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 229 [2020-10-14 02:46:33,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:46:33,627 INFO L225 Difference]: With dead ends: 87551 [2020-10-14 02:46:33,628 INFO L226 Difference]: Without dead ends: 50442 [2020-10-14 02:46:33,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 02:46:33,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50442 states. [2020-10-14 02:46:34,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50442 to 48043. [2020-10-14 02:46:34,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48043 states. [2020-10-14 02:46:34,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48043 states to 48043 states and 60912 transitions. [2020-10-14 02:46:34,685 INFO L78 Accepts]: Start accepts. Automaton has 48043 states and 60912 transitions. Word has length 229 [2020-10-14 02:46:34,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:46:34,685 INFO L479 AbstractCegarLoop]: Abstraction has 48043 states and 60912 transitions. [2020-10-14 02:46:34,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 02:46:34,686 INFO L276 IsEmpty]: Start isEmpty. Operand 48043 states and 60912 transitions. [2020-10-14 02:46:34,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-14 02:46:34,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:46:34,694 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 02:46:34,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 02:46:34,694 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:46:34,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:46:34,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1364044594, now seen corresponding path program 1 times [2020-10-14 02:46:34,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:46:34,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811430684] [2020-10-14 02:46:34,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:46:34,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:34,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:34,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:36,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:37,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:39,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:39,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-10-14 02:46:39,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:46:39,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4940 [2020-10-14 02:46:39,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:39,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:39,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:46:39,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-14 02:46:39,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 02:46:39,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:46:39,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:46:39,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:39,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:39,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:39,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:46:39,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:39,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:46:39,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:39,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:39,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:46:39,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:46:39,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:46:39,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:46:39,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:46:39,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:39,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:39,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:39,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 02:46:39,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:39,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 02:46:39,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:39,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:39,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:46:39,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:46:39,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 02:46:39,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:46:39,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-14 02:46:39,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:40,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:40,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:40,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 02:46:40,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:40,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-14 02:46:40,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:40,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:40,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:46:40,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:46:40,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-14 02:46:40,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:46:40,473 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 134 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:46:40,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [811430684] [2020-10-14 02:46:40,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:46:40,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 02:46:40,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456508413] [2020-10-14 02:46:40,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 02:46:40,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:46:40,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 02:46:40,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 02:46:40,484 INFO L87 Difference]: Start difference. First operand 48043 states and 60912 transitions. Second operand 8 states. [2020-10-14 02:47:03,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:47:03,287 INFO L93 Difference]: Finished difference Result 116293 states and 156431 transitions. [2020-10-14 02:47:03,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 02:47:03,289 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 245 [2020-10-14 02:47:03,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:47:03,529 INFO L225 Difference]: With dead ends: 116293 [2020-10-14 02:47:03,530 INFO L226 Difference]: Without dead ends: 69023 [2020-10-14 02:47:03,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 02:47:03,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69023 states. [2020-10-14 02:47:04,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69023 to 68824. [2020-10-14 02:47:04,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68824 states. [2020-10-14 02:47:04,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68824 states to 68824 states and 83922 transitions. [2020-10-14 02:47:04,869 INFO L78 Accepts]: Start accepts. Automaton has 68824 states and 83922 transitions. Word has length 245 [2020-10-14 02:47:04,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:47:04,869 INFO L479 AbstractCegarLoop]: Abstraction has 68824 states and 83922 transitions. [2020-10-14 02:47:04,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 02:47:04,869 INFO L276 IsEmpty]: Start isEmpty. Operand 68824 states and 83922 transitions. [2020-10-14 02:47:04,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-10-14 02:47:04,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:47:04,878 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 02:47:04,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 02:47:04,879 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:47:04,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:47:04,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1736719331, now seen corresponding path program 1 times [2020-10-14 02:47:04,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:47:04,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755227722] [2020-10-14 02:47:04,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:47:04,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:04,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:05,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:07,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:07,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-14 02:47:07,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:47:07,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2176 [2020-10-14 02:47:07,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:07,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:07,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:47:07,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 261 [2020-10-14 02:47:07,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 02:47:07,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:47:07,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:47:07,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:07,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:07,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:07,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:47:07,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:47:07,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:47:07,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:07,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:07,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:47:07,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:47:07,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:47:07,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:47:07,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:47:07,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:07,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:07,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:07,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 02:47:07,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:47:07,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 02:47:07,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:07,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:07,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:47:07,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:47:07,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:47:07,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:47:07,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-14 02:47:07,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:07,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:07,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:07,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 02:47:07,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:47:07,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 02:47:07,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:07,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:07,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:47:07,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:47:07,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 02:47:07,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:47:07,599 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-14 02:47:07,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [755227722] [2020-10-14 02:47:07,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:47:07,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 02:47:07,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761548125] [2020-10-14 02:47:07,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 02:47:07,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:47:07,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 02:47:07,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:47:07,602 INFO L87 Difference]: Start difference. First operand 68824 states and 83922 transitions. Second operand 6 states. [2020-10-14 02:47:33,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:47:33,142 INFO L93 Difference]: Finished difference Result 165708 states and 206711 transitions. [2020-10-14 02:47:33,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 02:47:33,144 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 282 [2020-10-14 02:47:33,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:47:33,860 INFO L225 Difference]: With dead ends: 165708 [2020-10-14 02:47:33,860 INFO L226 Difference]: Without dead ends: 97657 [2020-10-14 02:47:33,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 02:47:34,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97657 states. [2020-10-14 02:47:35,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97657 to 95326. [2020-10-14 02:47:35,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95326 states. [2020-10-14 02:47:35,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95326 states to 95326 states and 118185 transitions. [2020-10-14 02:47:35,582 INFO L78 Accepts]: Start accepts. Automaton has 95326 states and 118185 transitions. Word has length 282 [2020-10-14 02:47:35,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:47:35,583 INFO L479 AbstractCegarLoop]: Abstraction has 95326 states and 118185 transitions. [2020-10-14 02:47:35,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 02:47:35,584 INFO L276 IsEmpty]: Start isEmpty. Operand 95326 states and 118185 transitions. [2020-10-14 02:47:35,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-10-14 02:47:35,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:47:35,594 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:47:35,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 02:47:35,594 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:47:35,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:47:35,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1723629394, now seen corresponding path program 1 times [2020-10-14 02:47:35,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:47:35,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952972433] [2020-10-14 02:47:35,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:47:35,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:35,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:36,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:36,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-14 02:47:36,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:47:36,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 522 [2020-10-14 02:47:36,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:36,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:36,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 02:47:36,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:47:36,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-14 02:47:36,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:47:36,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:47:36,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:36,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:36,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:36,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:47:36,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:47:36,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:47:36,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:36,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:36,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:47:36,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:47:36,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:47:36,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:47:36,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:47:36,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:36,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:37,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:37,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-14 02:47:37,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:47:37,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 724 [2020-10-14 02:47:37,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:37,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:37,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:47:37,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:47:37,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 02:47:37,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:47:37,296 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:47:37,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952972433] [2020-10-14 02:47:37,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 02:47:37,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 02:47:37,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269918897] [2020-10-14 02:47:37,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:47:37,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:47:37,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:47:37,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:47:37,299 INFO L87 Difference]: Start difference. First operand 95326 states and 118185 transitions. Second operand 7 states.