/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:10:11,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:10:11,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:10:11,975 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:10:11,976 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:10:11,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:10:11,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:10:11,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:10:11,993 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:10:11,996 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:10:11,997 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:10:11,998 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:10:11,998 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:10:12,001 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:10:12,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:10:12,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:10:12,008 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:10:12,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:10:12,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:10:12,019 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:10:12,022 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:10:12,023 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:10:12,024 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:10:12,026 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:10:12,043 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:10:12,043 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:10:12,044 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:10:12,045 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:10:12,047 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:10:12,048 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:10:12,049 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:10:12,049 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:10:12,050 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:10:12,054 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:10:12,055 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:10:12,055 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:10:12,059 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:10:12,060 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:10:12,060 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:10:12,061 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:10:12,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:10:12,064 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 21:10:12,106 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:10:12,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:10:12,108 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:10:12,108 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:10:12,109 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:10:12,109 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:10:12,109 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:10:12,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:10:12,110 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:10:12,110 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:10:12,111 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:10:12,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:10:12,112 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:10:12,112 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:10:12,112 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:10:12,112 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:10:12,113 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:10:12,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:10:12,113 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:10:12,113 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:10:12,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:10:12,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:10:12,114 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:10:12,115 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:10:12,115 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:10:12,115 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:10:12,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:10:12,115 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:10:12,116 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:10:12,116 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 21:10:12,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:10:12,508 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:10:12,512 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:10:12,517 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:10:12,518 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:10:12,518 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label19.c [2020-10-14 21:10:12,591 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6014f7f74/7945990a923c47cc9b1d4f00794bf4f1/FLAG76b16ce8a [2020-10-14 21:10:13,444 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:10:13,444 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label19.c [2020-10-14 21:10:13,483 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6014f7f74/7945990a923c47cc9b1d4f00794bf4f1/FLAG76b16ce8a [2020-10-14 21:10:13,890 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6014f7f74/7945990a923c47cc9b1d4f00794bf4f1 [2020-10-14 21:10:13,903 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:10:13,905 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:10:13,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:10:13,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:10:13,913 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:10:13,914 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:10:13" (1/1) ... [2020-10-14 21:10:13,918 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30829a49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:10:13, skipping insertion in model container [2020-10-14 21:10:13,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:10:13" (1/1) ... [2020-10-14 21:10:13,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:10:14,113 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:10:15,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:10:15,888 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:10:16,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:10:16,625 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:10:16,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:10:16 WrapperNode [2020-10-14 21:10:16,626 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:10:16,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:10:16,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:10:16,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:10:16,645 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:10:16" (1/1) ... [2020-10-14 21:10:16,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:10:16" (1/1) ... [2020-10-14 21:10:16,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:10:16" (1/1) ... [2020-10-14 21:10:16,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:10:16" (1/1) ... [2020-10-14 21:10:16,837 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:10:16" (1/1) ... [2020-10-14 21:10:16,901 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:10:16" (1/1) ... [2020-10-14 21:10:16,942 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:10:16" (1/1) ... [2020-10-14 21:10:16,977 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:10:16,978 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:10:16,978 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:10:16,978 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:10:16,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:10:16" (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 21:10:17,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:10:17,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:10:17,068 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:10:17,068 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:10:17,068 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:10:17,068 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:10:17,069 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:10:17,069 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:10:17,069 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:10:17,069 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:10:17,069 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:10:17,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:10:17,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:10:17,070 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:10:17,070 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:10:17,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:10:17,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:10:21,869 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:10:21,869 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:10:21,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:10:21 BoogieIcfgContainer [2020-10-14 21:10:21,880 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:10:21,881 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:10:21,881 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:10:21,885 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:10:21,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:10:13" (1/3) ... [2020-10-14 21:10:21,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4312722d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:10:21, skipping insertion in model container [2020-10-14 21:10:21,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:10:16" (2/3) ... [2020-10-14 21:10:21,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4312722d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:10:21, skipping insertion in model container [2020-10-14 21:10:21,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:10:21" (3/3) ... [2020-10-14 21:10:21,889 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label19.c [2020-10-14 21:10:21,900 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:10:21,910 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:10:21,926 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:10:21,955 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:10:21,955 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:10:21,955 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:10:21,955 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:10:21,955 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:10:21,956 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:10:21,956 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:10:21,956 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:10:21,991 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 21:10:21,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 21:10:21,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:10:22,000 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] [2020-10-14 21:10:22,000 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:10:22,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:10:22,007 INFO L82 PathProgramCache]: Analyzing trace with hash 219537197, now seen corresponding path program 1 times [2020-10-14 21:10:22,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:10:22,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657681928] [2020-10-14 21:10:22,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:10:22,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:22,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:22,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:22,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 21:10:22,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:22,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 364 [2020-10-14 21:10:22,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:22,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:22,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:10:22,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:10:22,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 21:10:22,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:10:22,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:10:22,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:22,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:22,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:22,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:10:22,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:22,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 21:10:22,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:22,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:22,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:10:22,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:10:22,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:10:22,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:22,647 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 21:10:22,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657681928] [2020-10-14 21:10:22,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:10:22,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:10:22,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852832280] [2020-10-14 21:10:22,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:10:22,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:10:22,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:10:22,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:10:22,681 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-14 21:10:31,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:10:31,140 INFO L93 Difference]: Finished difference Result 2471 states and 4735 transitions. [2020-10-14 21:10:31,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:10:31,142 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-14 21:10:31,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:10:31,182 INFO L225 Difference]: With dead ends: 2471 [2020-10-14 21:10:31,182 INFO L226 Difference]: Without dead ends: 1568 [2020-10-14 21:10:31,196 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 21:10:31,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-14 21:10:31,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1555. [2020-10-14 21:10:31,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1555 states. [2020-10-14 21:10:31,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 2403 transitions. [2020-10-14 21:10:31,346 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 2403 transitions. Word has length 20 [2020-10-14 21:10:31,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:10:31,347 INFO L479 AbstractCegarLoop]: Abstraction has 1555 states and 2403 transitions. [2020-10-14 21:10:31,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:10:31,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 2403 transitions. [2020-10-14 21:10:31,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-14 21:10:31,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:10:31,353 INFO L422 BasicCegarLoop]: trace histogram [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 21:10:31,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:10:31,354 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:10:31,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:10:31,354 INFO L82 PathProgramCache]: Analyzing trace with hash -245910091, now seen corresponding path program 1 times [2020-10-14 21:10:31,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:10:31,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [610185129] [2020-10-14 21:10:31,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:10:31,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:31,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:31,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:32,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:32,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-14 21:10:32,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:10:32,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 854 [2020-10-14 21:10:32,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:32,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:32,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:10:32,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:10:32,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 21:10:32,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:10:32,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:10:32,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:32,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:32,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:32,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:10:32,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:32,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:10:32,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:32,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:32,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:10:32,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:10:32,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:10:32,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:32,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:10:32,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:32,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:32,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:32,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:10:32,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:32,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 21:10:32,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:32,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:32,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:10:32,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:10:32,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:10:32,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:32,573 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:10:32,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [610185129] [2020-10-14 21:10:32,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:10:32,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:10:32,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956931906] [2020-10-14 21:10:32,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:10:32,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:10:32,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:10:32,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:10:32,578 INFO L87 Difference]: Start difference. First operand 1555 states and 2403 transitions. Second operand 6 states. [2020-10-14 21:10:42,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:10:42,917 INFO L93 Difference]: Finished difference Result 4719 states and 7347 transitions. [2020-10-14 21:10:42,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:10:42,919 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2020-10-14 21:10:42,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:10:42,941 INFO L225 Difference]: With dead ends: 4719 [2020-10-14 21:10:42,941 INFO L226 Difference]: Without dead ends: 3170 [2020-10-14 21:10:42,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:10:42,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3170 states. [2020-10-14 21:10:43,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3170 to 3149. [2020-10-14 21:10:43,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3149 states. [2020-10-14 21:10:43,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3149 states to 3149 states and 4313 transitions. [2020-10-14 21:10:43,068 INFO L78 Accepts]: Start accepts. Automaton has 3149 states and 4313 transitions. Word has length 95 [2020-10-14 21:10:43,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:10:43,069 INFO L479 AbstractCegarLoop]: Abstraction has 3149 states and 4313 transitions. [2020-10-14 21:10:43,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:10:43,069 INFO L276 IsEmpty]: Start isEmpty. Operand 3149 states and 4313 transitions. [2020-10-14 21:10:43,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-14 21:10:43,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:10:43,080 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 21:10:43,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:10:43,080 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:10:43,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:10:43,081 INFO L82 PathProgramCache]: Analyzing trace with hash -55923639, now seen corresponding path program 1 times [2020-10-14 21:10:43,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:10:43,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808830840] [2020-10-14 21:10:43,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:10:43,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:43,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:43,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:44,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:44,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 21:10:44,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:10:44,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 939 [2020-10-14 21:10:44,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:44,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:44,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:10:44,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:10:44,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 21:10:44,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:44,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:10:44,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:44,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:44,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:44,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:10:44,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:44,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:10:44,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:44,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:44,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:10:44,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:10:44,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:10:44,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:44,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:10:44,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:44,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:44,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:44,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 21:10:44,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:44,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-14 21:10:44,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:44,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:44,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:10:44,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:10:44,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 21:10:44,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:44,416 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:10:44,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808830840] [2020-10-14 21:10:44,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:10:44,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:10:44,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505309015] [2020-10-14 21:10:44,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:10:44,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:10:44,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:10:44,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:10:44,419 INFO L87 Difference]: Start difference. First operand 3149 states and 4313 transitions. Second operand 7 states. [2020-10-14 21:10:56,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:10:56,753 INFO L93 Difference]: Finished difference Result 9725 states and 14087 transitions. [2020-10-14 21:10:56,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:10:56,755 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 101 [2020-10-14 21:10:56,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:10:56,807 INFO L225 Difference]: With dead ends: 9725 [2020-10-14 21:10:56,807 INFO L226 Difference]: Without dead ends: 6582 [2020-10-14 21:10:56,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:10:56,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6582 states. [2020-10-14 21:10:57,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6582 to 6454. [2020-10-14 21:10:57,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6454 states. [2020-10-14 21:10:57,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6454 states to 6454 states and 8638 transitions. [2020-10-14 21:10:57,120 INFO L78 Accepts]: Start accepts. Automaton has 6454 states and 8638 transitions. Word has length 101 [2020-10-14 21:10:57,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:10:57,123 INFO L479 AbstractCegarLoop]: Abstraction has 6454 states and 8638 transitions. [2020-10-14 21:10:57,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:10:57,126 INFO L276 IsEmpty]: Start isEmpty. Operand 6454 states and 8638 transitions. [2020-10-14 21:10:57,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 21:10:57,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:10:57,136 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 21:10:57,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:10:57,137 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:10:57,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:10:57,138 INFO L82 PathProgramCache]: Analyzing trace with hash 818437633, now seen corresponding path program 1 times [2020-10-14 21:10:57,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:10:57,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1300545732] [2020-10-14 21:10:57,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:10:57,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:57,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:57,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:57,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:57,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-14 21:10:57,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:10:57,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 699 [2020-10-14 21:10:57,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:57,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:57,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:10:57,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:10:57,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 21:10:57,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:57,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:10:57,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:57,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:57,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:57,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:10:57,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:57,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:10:58,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:58,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:58,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:10:58,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:10:58,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:10:58,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:58,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:10:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:58,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:58,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:58,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 21:10:58,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:58,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-14 21:10:58,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:58,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:58,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:10:58,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:10:58,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 21:10:58,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:58,424 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:10:58,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1300545732] [2020-10-14 21:10:58,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:10:58,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:10:58,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942109904] [2020-10-14 21:10:58,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:10:58,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:10:58,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:10:58,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:10:58,431 INFO L87 Difference]: Start difference. First operand 6454 states and 8638 transitions. Second operand 7 states. [2020-10-14 21:11:11,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:11:11,414 INFO L93 Difference]: Finished difference Result 19622 states and 26768 transitions. [2020-10-14 21:11:11,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:11:11,416 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 105 [2020-10-14 21:11:11,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:11:11,475 INFO L225 Difference]: With dead ends: 19622 [2020-10-14 21:11:11,475 INFO L226 Difference]: Without dead ends: 13174 [2020-10-14 21:11:11,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:11:11,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13174 states. [2020-10-14 21:11:11,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13174 to 13008. [2020-10-14 21:11:11,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13008 states. [2020-10-14 21:11:11,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13008 states to 13008 states and 16487 transitions. [2020-10-14 21:11:11,797 INFO L78 Accepts]: Start accepts. Automaton has 13008 states and 16487 transitions. Word has length 105 [2020-10-14 21:11:11,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:11:11,800 INFO L479 AbstractCegarLoop]: Abstraction has 13008 states and 16487 transitions. [2020-10-14 21:11:11,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:11:11,800 INFO L276 IsEmpty]: Start isEmpty. Operand 13008 states and 16487 transitions. [2020-10-14 21:11:11,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-14 21:11:11,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:11:11,810 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:11:11,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:11:11,810 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:11:11,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:11:11,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1178709280, now seen corresponding path program 1 times [2020-10-14 21:11:11,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:11:11,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707523957] [2020-10-14 21:11:11,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:11:11,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:11:11,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:12,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:12,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:13,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:13,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:11:13,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-14 21:11:13,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:11:13,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1976 [2020-10-14 21:11:13,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:11:13,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:11:13,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:11:13,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 21:11:13,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 21:11:13,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:11:13,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:11:13,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:11:13,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:13,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:11:13,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:11:13,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:11:13,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:11:13,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:11:13,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:11:13,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:11:13,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:11:13,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:11:13,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:11:13,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:11:14,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:11:14,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:14,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:11:14,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:11:14,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:11:14,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 21:11:14,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:11:14,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:11:14,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:11:14,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:11:14,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:11:14,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:11:14,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 21:11:14,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:11:14,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:14,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:11:14,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 21:11:14,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:11:14,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-14 21:11:14,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:11:14,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:11:14,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:11:14,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:11:14,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 21:11:14,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:11:14,471 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 98 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:11:14,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1707523957] [2020-10-14 21:11:14,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:11:14,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:11:14,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255454258] [2020-10-14 21:11:14,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:11:14,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:11:14,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:11:14,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:11:14,475 INFO L87 Difference]: Start difference. First operand 13008 states and 16487 transitions. Second operand 7 states. [2020-10-14 21:11:29,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:11:29,060 INFO L93 Difference]: Finished difference Result 31391 states and 41966 transitions. [2020-10-14 21:11:29,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:11:29,062 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 203 [2020-10-14 21:11:29,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:11:29,233 INFO L225 Difference]: With dead ends: 31391 [2020-10-14 21:11:29,234 INFO L226 Difference]: Without dead ends: 17540 [2020-10-14 21:11:29,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:11:29,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17540 states. [2020-10-14 21:11:29,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17540 to 17274. [2020-10-14 21:11:29,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17274 states. [2020-10-14 21:11:29,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17274 states to 17274 states and 21279 transitions. [2020-10-14 21:11:29,705 INFO L78 Accepts]: Start accepts. Automaton has 17274 states and 21279 transitions. Word has length 203 [2020-10-14 21:11:29,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:11:29,706 INFO L479 AbstractCegarLoop]: Abstraction has 17274 states and 21279 transitions. [2020-10-14 21:11:29,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:11:29,706 INFO L276 IsEmpty]: Start isEmpty. Operand 17274 states and 21279 transitions. [2020-10-14 21:11:29,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-14 21:11:29,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:11:29,710 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:11:29,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:11:29,711 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:11:29,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:11:29,711 INFO L82 PathProgramCache]: Analyzing trace with hash -712936551, now seen corresponding path program 1 times [2020-10-14 21:11:29,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:11:29,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532244781] [2020-10-14 21:11:29,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:11:29,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:11:29,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:29,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:30,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:31,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:11:31,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-14 21:11:31,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:11:31,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1656 [2020-10-14 21:11:31,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:11:31,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:11:31,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:11:31,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 21:11:31,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 21:11:31,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:11:31,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:11:31,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:11:31,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:31,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:11:31,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:11:31,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:11:31,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:11:31,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:11:31,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:11:31,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:11:31,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:11:31,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:11:31,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:11:31,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:11:31,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:11:31,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:31,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:11:31,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:11:31,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:11:31,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-10-14 21:11:31,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:11:31,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:11:31,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:11:31,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:11:31,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 21:11:31,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:11:31,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:11:31,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:11:31,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:32,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:11:32,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:11:32,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:11:32,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 21:11:32,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:11:32,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:11:32,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:11:32,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:11:32,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:11:32,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:11:32,217 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 98 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:11:32,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532244781] [2020-10-14 21:11:32,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:11:32,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:11:32,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386879148] [2020-10-14 21:11:32,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:11:32,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:11:32,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:11:32,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:11:32,222 INFO L87 Difference]: Start difference. First operand 17274 states and 21279 transitions. Second operand 7 states. [2020-10-14 21:11:49,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:11:49,467 INFO L93 Difference]: Finished difference Result 42158 states and 55465 transitions. [2020-10-14 21:11:49,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:11:49,474 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 240 [2020-10-14 21:11:49,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:11:49,589 INFO L225 Difference]: With dead ends: 42158 [2020-10-14 21:11:49,589 INFO L226 Difference]: Without dead ends: 25657 [2020-10-14 21:11:49,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:11:49,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25657 states. [2020-10-14 21:11:50,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25657 to 24578. [2020-10-14 21:11:50,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24578 states. [2020-10-14 21:11:50,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24578 states to 24578 states and 31656 transitions. [2020-10-14 21:11:50,310 INFO L78 Accepts]: Start accepts. Automaton has 24578 states and 31656 transitions. Word has length 240 [2020-10-14 21:11:50,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:11:50,311 INFO L479 AbstractCegarLoop]: Abstraction has 24578 states and 31656 transitions. [2020-10-14 21:11:50,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:11:50,312 INFO L276 IsEmpty]: Start isEmpty. Operand 24578 states and 31656 transitions. [2020-10-14 21:11:50,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-14 21:11:50,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:11:50,317 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:11:50,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:11:50,317 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:11:50,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:11:50,318 INFO L82 PathProgramCache]: Analyzing trace with hash 729616029, now seen corresponding path program 1 times [2020-10-14 21:11:50,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:11:50,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884257899] [2020-10-14 21:11:50,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:11:50,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:11:50,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:50,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:51,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:51,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:11:51,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-14 21:11:51,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:11:51,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1607 [2020-10-14 21:11:51,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:11:51,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:11:51,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:11:51,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 21:11:51,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 21:11:51,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:11:52,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:11:52,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:11:52,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:52,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:11:52,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:11:52,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:11:52,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:11:52,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:11:52,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:11:52,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:11:52,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:11:52,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:11:52,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:11:52,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:11:52,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:11:52,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:52,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:11:52,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:11:52,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:11:52,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-14 21:11:52,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:11:52,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:11:52,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:11:52,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:11:52,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 21:11:52,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:11:52,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:11:52,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:11:52,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:52,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:11:52,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 21:11:52,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:11:52,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-14 21:11:52,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:11:52,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:11:52,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:11:52,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:11:52,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 21:11:52,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:11:52,640 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:11:52,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884257899] [2020-10-14 21:11:52,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:11:52,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:11:52,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237961084] [2020-10-14 21:11:52,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:11:52,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:11:52,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:11:52,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:11:52,644 INFO L87 Difference]: Start difference. First operand 24578 states and 31656 transitions. Second operand 7 states. [2020-10-14 21:12:15,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:12:15,006 INFO L93 Difference]: Finished difference Result 59942 states and 79711 transitions. [2020-10-14 21:12:15,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:12:15,007 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 254 [2020-10-14 21:12:15,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:12:15,137 INFO L225 Difference]: With dead ends: 59942 [2020-10-14 21:12:15,137 INFO L226 Difference]: Without dead ends: 36137 [2020-10-14 21:12:15,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:12:15,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36137 states. [2020-10-14 21:12:15,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36137 to 35197. [2020-10-14 21:12:15,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35197 states. [2020-10-14 21:12:15,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35197 states to 35197 states and 45997 transitions. [2020-10-14 21:12:15,922 INFO L78 Accepts]: Start accepts. Automaton has 35197 states and 45997 transitions. Word has length 254 [2020-10-14 21:12:15,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:12:15,924 INFO L479 AbstractCegarLoop]: Abstraction has 35197 states and 45997 transitions. [2020-10-14 21:12:15,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:12:15,924 INFO L276 IsEmpty]: Start isEmpty. Operand 35197 states and 45997 transitions. [2020-10-14 21:12:15,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-14 21:12:15,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:12:15,929 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:12:15,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:12:15,929 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:12:15,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:12:15,930 INFO L82 PathProgramCache]: Analyzing trace with hash 818412517, now seen corresponding path program 1 times [2020-10-14 21:12:15,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:12:15,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [329603474] [2020-10-14 21:12:15,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:12:15,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:12:16,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:16,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:16,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:18,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:12:18,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-14 21:12:18,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:12:18,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2867 [2020-10-14 21:12:18,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:12:18,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:12:18,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:12:18,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-14 21:12:18,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 21:12:18,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:12:19,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:12:19,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:12:19,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:19,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:12:19,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:12:19,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:12:19,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:12:19,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:12:19,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:12:19,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:12:19,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:12:19,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:12:19,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:12:19,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:12:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:12:19,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:19,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:12:19,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:12:19,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:12:19,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-14 21:12:19,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:12:19,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:12:19,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:12:19,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:12:19,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 21:12:19,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:12:19,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:12:19,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:12:19,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:19,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:12:19,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 21:12:19,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:12:19,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-14 21:12:19,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:12:19,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:12:19,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:12:19,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:12:19,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 21:12:19,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:12:19,739 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:12:19,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [329603474] [2020-10-14 21:12:19,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:12:19,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:12:19,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191758583] [2020-10-14 21:12:19,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:12:19,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:12:19,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:12:19,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:12:19,742 INFO L87 Difference]: Start difference. First operand 35197 states and 45997 transitions. Second operand 7 states. [2020-10-14 21:12:49,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:12:49,184 INFO L93 Difference]: Finished difference Result 81813 states and 113988 transitions. [2020-10-14 21:12:49,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:12:49,188 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 258 [2020-10-14 21:12:49,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:12:49,413 INFO L225 Difference]: With dead ends: 81813 [2020-10-14 21:12:49,414 INFO L226 Difference]: Without dead ends: 47389 [2020-10-14 21:12:49,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:12:49,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47389 states. [2020-10-14 21:12:50,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47389 to 46771. [2020-10-14 21:12:50,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46771 states. [2020-10-14 21:12:50,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46771 states to 46771 states and 60920 transitions. [2020-10-14 21:12:50,915 INFO L78 Accepts]: Start accepts. Automaton has 46771 states and 60920 transitions. Word has length 258 [2020-10-14 21:12:50,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:12:50,916 INFO L479 AbstractCegarLoop]: Abstraction has 46771 states and 60920 transitions. [2020-10-14 21:12:50,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:12:50,916 INFO L276 IsEmpty]: Start isEmpty. Operand 46771 states and 60920 transitions. [2020-10-14 21:12:50,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-10-14 21:12:50,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:12:50,922 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:12:50,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 21:12:50,923 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:12:50,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:12:50,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1439319662, now seen corresponding path program 1 times [2020-10-14 21:12:50,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:12:50,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117066376] [2020-10-14 21:12:50,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:12:51,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:12:51,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:51,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:52,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:55,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:12:55,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 21:12:55,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:12:55,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4357 [2020-10-14 21:12:55,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:12:55,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:12:55,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:12:55,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:12:55,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-14 21:12:55,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:12:55,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:12:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:12:55,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:55,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:12:55,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:12:55,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:12:55,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:12:55,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:12:55,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:12:55,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:12:55,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:12:55,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:12:55,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:12:55,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:12:55,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:12:55,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:56,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:12:56,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 21:12:56,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:12:56,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 433 [2020-10-14 21:12:56,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:12:56,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:12:56,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:12:56,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:12:56,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 21:12:56,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:12:56,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-14 21:12:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:12:56,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:56,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:12:56,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 21:12:56,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:12:56,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 21:12:56,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:12:56,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:12:56,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:12:56,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-14 21:12:56,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:12:56,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:12:57,027 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 26 proven. 90 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 21:12:57,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117066376] [2020-10-14 21:12:57,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:12:57,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:12:57,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147691532] [2020-10-14 21:12:57,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:12:57,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:12:57,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:12:57,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:12:57,040 INFO L87 Difference]: Start difference. First operand 46771 states and 60920 transitions. Second operand 7 states. [2020-10-14 21:13:04,693 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2020-10-14 21:13:23,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:13:23,676 INFO L93 Difference]: Finished difference Result 96216 states and 125178 transitions. [2020-10-14 21:13:23,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 21:13:23,683 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 263 [2020-10-14 21:13:23,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:13:23,922 INFO L225 Difference]: With dead ends: 96216 [2020-10-14 21:13:23,922 INFO L226 Difference]: Without dead ends: 50218 [2020-10-14 21:13:24,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 21:13:24,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50218 states. [2020-10-14 21:13:25,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50218 to 50009. [2020-10-14 21:13:25,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50009 states. [2020-10-14 21:13:25,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50009 states to 50009 states and 64591 transitions. [2020-10-14 21:13:25,314 INFO L78 Accepts]: Start accepts. Automaton has 50009 states and 64591 transitions. Word has length 263 [2020-10-14 21:13:25,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:13:25,315 INFO L479 AbstractCegarLoop]: Abstraction has 50009 states and 64591 transitions. [2020-10-14 21:13:25,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:13:25,316 INFO L276 IsEmpty]: Start isEmpty. Operand 50009 states and 64591 transitions. [2020-10-14 21:13:25,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-10-14 21:13:25,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:13:25,322 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:13:25,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 21:13:25,322 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:13:25,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:13:25,323 INFO L82 PathProgramCache]: Analyzing trace with hash 488004005, now seen corresponding path program 1 times [2020-10-14 21:13:25,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:13:25,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626584864] [2020-10-14 21:13:25,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:13:25,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:13:25,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:26,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:13:26,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-14 21:13:26,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:13:26,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1111 [2020-10-14 21:13:26,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:13:26,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:13:26,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:13:26,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 282 [2020-10-14 21:13:26,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 21:13:26,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:13:26,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:13:26,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:13:26,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:26,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:13:26,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:13:26,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:13:26,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 21:13:26,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:13:26,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:13:26,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:13:26,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:13:26,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:13:26,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:13:26,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:13:26,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:13:26,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:26,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:13:26,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:13:26,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:13:26,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 21:13:26,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:13:26,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:13:26,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:13:26,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:13:26,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:13:26,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:13:26,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:13:26,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:13:26,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:27,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:13:27,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 21:13:27,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:13:27,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-14 21:13:27,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:13:27,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:13:27,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:13:27,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:13:27,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 21:13:27,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:13:27,211 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-14 21:13:27,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626584864] [2020-10-14 21:13:27,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:13:27,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:13:27,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007074299] [2020-10-14 21:13:27,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:13:27,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:13:27,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:13:27,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:13:27,214 INFO L87 Difference]: Start difference. First operand 50009 states and 64591 transitions. Second operand 6 states. [2020-10-14 21:13:59,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:13:59,554 INFO L93 Difference]: Finished difference Result 173164 states and 238128 transitions. [2020-10-14 21:13:59,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:13:59,556 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 290 [2020-10-14 21:13:59,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted.