/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/Problem19_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:05:35,897 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:05:35,900 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:05:35,928 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:05:35,929 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:05:35,930 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:05:35,932 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:05:35,935 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:05:35,937 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:05:35,938 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:05:35,939 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:05:35,941 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:05:35,942 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:05:35,943 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:05:35,945 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:05:35,946 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:05:35,948 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:05:35,949 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:05:35,952 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:05:35,954 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:05:35,955 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:05:35,957 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:05:35,959 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:05:35,960 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:05:35,963 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:05:35,964 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:05:35,964 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:05:35,965 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:05:35,966 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:05:35,967 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:05:35,967 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:05:35,968 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:05:35,970 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:05:35,971 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:05:35,972 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:05:35,972 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:05:35,973 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:05:35,973 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:05:35,973 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:05:35,975 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:05:35,976 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:05:35,977 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 23:05:36,005 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:05:36,006 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:05:36,008 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:05:36,009 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:05:36,009 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:05:36,009 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:05:36,009 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:05:36,010 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:05:36,010 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:05:36,010 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:05:36,010 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:05:36,010 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:05:36,010 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:05:36,011 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:05:36,011 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:05:36,011 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:05:36,012 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:05:36,012 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:05:36,012 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:05:36,013 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:05:36,013 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:05:36,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:05:36,013 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:05:36,014 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:05:36,014 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:05:36,014 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:05:36,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:05:36,015 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:05:36,015 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:05:36,015 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 23:05:36,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:05:36,460 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:05:36,465 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:05:36,467 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:05:36,469 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:05:36,470 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label34.c [2020-10-14 23:05:36,593 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3da3382d4/6c74ebe418ed42b88c02b35bf269411e/FLAGc6d2879ec [2020-10-14 23:05:37,772 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:05:37,773 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label34.c [2020-10-14 23:05:37,839 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3da3382d4/6c74ebe418ed42b88c02b35bf269411e/FLAGc6d2879ec [2020-10-14 23:05:38,092 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3da3382d4/6c74ebe418ed42b88c02b35bf269411e [2020-10-14 23:05:38,107 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:05:38,112 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:05:38,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:05:38,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:05:38,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:05:38,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:05:38" (1/1) ... [2020-10-14 23:05:38,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dffdbfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:05:38, skipping insertion in model container [2020-10-14 23:05:38,130 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:05:38" (1/1) ... [2020-10-14 23:05:38,142 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:05:38,430 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:05:41,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:05:41,435 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:05:42,674 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:05:42,744 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:05:42,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:05:42 WrapperNode [2020-10-14 23:05:42,746 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:05:42,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:05:42,748 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:05:42,748 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:05:42,770 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:05:42" (1/1) ... [2020-10-14 23:05:42,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:05:42" (1/1) ... [2020-10-14 23:05:42,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:05:42" (1/1) ... [2020-10-14 23:05:42,877 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:05:42" (1/1) ... [2020-10-14 23:05:43,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:05:42" (1/1) ... [2020-10-14 23:05:43,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:05:42" (1/1) ... [2020-10-14 23:05:43,304 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:05:42" (1/1) ... [2020-10-14 23:05:43,409 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:05:43,410 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:05:43,410 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:05:43,411 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:05:43,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:05:42" (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 23:05:43,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:05:43,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:05:43,511 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 23:05:43,511 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 23:05:43,511 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 23:05:43,513 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 23:05:43,513 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 23:05:43,513 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 23:05:43,513 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:05:43,513 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 23:05:43,514 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 23:05:43,514 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 23:05:43,514 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 23:05:43,514 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 23:05:43,514 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 23:05:43,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:05:43,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:05:43,515 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 23:05:43,515 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:05:43,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:05:43,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:05:58,712 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:05:58,713 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 23:05:58,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:05:58 BoogieIcfgContainer [2020-10-14 23:05:58,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:05:58,749 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:05:58,749 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:05:58,754 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:05:58,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:05:38" (1/3) ... [2020-10-14 23:05:58,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44ad56df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:05:58, skipping insertion in model container [2020-10-14 23:05:58,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:05:42" (2/3) ... [2020-10-14 23:05:58,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44ad56df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:05:58, skipping insertion in model container [2020-10-14 23:05:58,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:05:58" (3/3) ... [2020-10-14 23:05:58,766 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label34.c [2020-10-14 23:05:58,783 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:05:58,809 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:05:58,831 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:05:58,894 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:05:58,895 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:05:58,895 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:05:58,895 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:05:58,895 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:05:58,895 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:05:58,895 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:05:58,896 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:05:58,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-14 23:05:58,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 23:05:58,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:05:58,996 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:05:58,996 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:05:59,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:05:59,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1717297526, now seen corresponding path program 1 times [2020-10-14 23:05:59,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:05:59,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439098275] [2020-10-14 23:05:59,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:05:59,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:05:59,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:06:00,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:06:00,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 23:06:00,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:06:00,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 686 [2020-10-14 23:06:00,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:06:00,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:06:00,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:06:00,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:06:00,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 23:06:00,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 23:06:00,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:06:00,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:06:00,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:06:00,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:06:00,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:06:00,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:06:00,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 23:06:00,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:06:00,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:06:00,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:06:00,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:06:00,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:06:00,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:06:00,292 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 23:06:00,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439098275] [2020-10-14 23:06:00,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:06:00,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:06:00,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235518600] [2020-10-14 23:06:00,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:06:00,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:06:00,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:06:00,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:06:00,337 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2020-10-14 23:06:26,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:06:26,654 INFO L93 Difference]: Finished difference Result 5086 states and 9561 transitions. [2020-10-14 23:06:26,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 23:06:26,658 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-10-14 23:06:26,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:06:26,729 INFO L225 Difference]: With dead ends: 5086 [2020-10-14 23:06:26,729 INFO L226 Difference]: Without dead ends: 3245 [2020-10-14 23:06:26,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:06:26,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3245 states. [2020-10-14 23:06:26,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3245 to 3178. [2020-10-14 23:06:26,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3178 states. [2020-10-14 23:06:26,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3178 states to 3178 states and 5849 transitions. [2020-10-14 23:06:26,970 INFO L78 Accepts]: Start accepts. Automaton has 3178 states and 5849 transitions. Word has length 56 [2020-10-14 23:06:26,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:06:26,971 INFO L479 AbstractCegarLoop]: Abstraction has 3178 states and 5849 transitions. [2020-10-14 23:06:26,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:06:26,972 INFO L276 IsEmpty]: Start isEmpty. Operand 3178 states and 5849 transitions. [2020-10-14 23:06:26,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-14 23:06:26,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:06:26,979 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 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 23:06:26,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:06:26,980 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:06:26,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:06:26,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1893081033, now seen corresponding path program 1 times [2020-10-14 23:06:26,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:06:26,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769173131] [2020-10-14 23:06:26,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:06:27,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:06:27,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:06:27,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:06:27,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:06:27,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:06:28,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:06:28,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 23:06:28,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:06:28,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1301 [2020-10-14 23:06:28,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:06:28,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:06:28,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:06:28,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:06:28,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 23:06:28,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:06:28,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:06:28,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:06:28,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:06:28,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:06:28,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:06:28,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:06:28,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 23:06:28,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:06:28,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:06:28,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:06:28,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:06:28,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:06:28,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 23:06:28,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:06:28,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:06:28,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:06:28,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:06:28,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:06:28,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 23:06:28,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:06:28,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-14 23:06:28,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:06:28,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:06:28,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:06:28,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:06:28,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 23:06:28,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:06:28,772 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:06:28,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769173131] [2020-10-14 23:06:28,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:06:28,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:06:28,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872985980] [2020-10-14 23:06:28,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:06:28,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:06:28,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:06:28,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:06:28,777 INFO L87 Difference]: Start difference. First operand 3178 states and 5849 transitions. Second operand 7 states. [2020-10-14 23:07:07,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:07:07,661 INFO L93 Difference]: Finished difference Result 9422 states and 17487 transitions. [2020-10-14 23:07:07,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:07:07,666 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 127 [2020-10-14 23:07:07,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:07:07,715 INFO L225 Difference]: With dead ends: 9422 [2020-10-14 23:07:07,716 INFO L226 Difference]: Without dead ends: 6250 [2020-10-14 23:07:07,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:07:07,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6250 states. [2020-10-14 23:07:07,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6250 to 6098. [2020-10-14 23:07:07,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6098 states. [2020-10-14 23:07:08,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6098 states to 6098 states and 9947 transitions. [2020-10-14 23:07:08,007 INFO L78 Accepts]: Start accepts. Automaton has 6098 states and 9947 transitions. Word has length 127 [2020-10-14 23:07:08,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:07:08,008 INFO L479 AbstractCegarLoop]: Abstraction has 6098 states and 9947 transitions. [2020-10-14 23:07:08,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:07:08,008 INFO L276 IsEmpty]: Start isEmpty. Operand 6098 states and 9947 transitions. [2020-10-14 23:07:08,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 23:07:08,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:07:08,012 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:07:08,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:07:08,012 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:07:08,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:07:08,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1451461929, now seen corresponding path program 1 times [2020-10-14 23:07:08,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:07:08,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [354408150] [2020-10-14 23:07:08,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:07:08,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:07:08,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:07:08,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:07:08,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:07:09,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:07:09,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:07:09,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 23:07:09,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:07:09,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1463 [2020-10-14 23:07:09,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:07:09,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:07:09,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:07:09,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:07:09,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 23:07:09,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:07:09,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:07:09,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:07:09,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:07:09,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:07:09,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:07:09,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:07:09,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 23:07:09,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:07:09,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:07:09,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:07:09,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:07:09,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:07:09,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:07:09,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:07:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:07:09,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:07:09,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:07:09,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 23:07:09,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:07:09,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-14 23:07:09,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:07:09,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:07:09,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:07:09,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:07:09,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 23:07:09,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:07:09,987 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:07:09,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [354408150] [2020-10-14 23:07:09,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:07:09,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 23:07:09,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012707030] [2020-10-14 23:07:09,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:07:09,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:07:09,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:07:09,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:07:09,993 INFO L87 Difference]: Start difference. First operand 6098 states and 9947 transitions. Second operand 6 states. [2020-10-14 23:08:00,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:08:00,641 INFO L93 Difference]: Finished difference Result 18213 states and 30363 transitions. [2020-10-14 23:08:00,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:08:00,645 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2020-10-14 23:08:00,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:08:00,716 INFO L225 Difference]: With dead ends: 18213 [2020-10-14 23:08:00,716 INFO L226 Difference]: Without dead ends: 12121 [2020-10-14 23:08:00,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:08:00,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12121 states. [2020-10-14 23:08:01,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12121 to 11991. [2020-10-14 23:08:01,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11991 states. [2020-10-14 23:08:01,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11991 states to 11991 states and 17372 transitions. [2020-10-14 23:08:01,226 INFO L78 Accepts]: Start accepts. Automaton has 11991 states and 17372 transitions. Word has length 134 [2020-10-14 23:08:01,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:08:01,229 INFO L479 AbstractCegarLoop]: Abstraction has 11991 states and 17372 transitions. [2020-10-14 23:08:01,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:08:01,230 INFO L276 IsEmpty]: Start isEmpty. Operand 11991 states and 17372 transitions. [2020-10-14 23:08:01,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-14 23:08:01,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:08:01,245 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:08:01,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:08:01,246 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:08:01,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:08:01,249 INFO L82 PathProgramCache]: Analyzing trace with hash 153128327, now seen corresponding path program 1 times [2020-10-14 23:08:01,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:08:01,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386742419] [2020-10-14 23:08:01,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:08:01,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:08:01,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:08:01,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:08:02,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:08:02,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-14 23:08:02,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:08:02,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1305 [2020-10-14 23:08:02,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:08:02,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:08:02,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:08:02,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:08:02,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 23:08:02,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:08:02,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:08:02,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:08:02,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:08:02,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:08:02,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:08:02,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:08:02,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:08:02,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:08:02,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:08:02,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:08:02,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:08:02,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:08:02,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:08:02,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:08:02,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:08:02,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:08:02,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:08:02,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-14 23:08:02,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:08:02,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-14 23:08:02,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:08:02,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:08:02,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:08:02,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:08:02,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 23:08:02,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:08:03,121 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:08:03,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1386742419] [2020-10-14 23:08:03,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:08:03,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:08:03,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652295201] [2020-10-14 23:08:03,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:08:03,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:08:03,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:08:03,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:08:03,129 INFO L87 Difference]: Start difference. First operand 11991 states and 17372 transitions. Second operand 7 states. [2020-10-14 23:08:56,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:08:56,478 INFO L93 Difference]: Finished difference Result 30184 states and 43991 transitions. [2020-10-14 23:08:56,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 23:08:56,486 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 160 [2020-10-14 23:08:56,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:08:56,576 INFO L225 Difference]: With dead ends: 30184 [2020-10-14 23:08:56,576 INFO L226 Difference]: Without dead ends: 18199 [2020-10-14 23:08:56,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:08:56,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18199 states. [2020-10-14 23:08:57,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18199 to 17934. [2020-10-14 23:08:57,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17934 states. [2020-10-14 23:08:57,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17934 states to 17934 states and 24112 transitions. [2020-10-14 23:08:57,236 INFO L78 Accepts]: Start accepts. Automaton has 17934 states and 24112 transitions. Word has length 160 [2020-10-14 23:08:57,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:08:57,239 INFO L479 AbstractCegarLoop]: Abstraction has 17934 states and 24112 transitions. [2020-10-14 23:08:57,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:08:57,239 INFO L276 IsEmpty]: Start isEmpty. Operand 17934 states and 24112 transitions. [2020-10-14 23:08:57,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-14 23:08:57,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:08:57,245 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 23:08:57,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:08:57,246 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:08:57,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:08:57,246 INFO L82 PathProgramCache]: Analyzing trace with hash -541661524, now seen corresponding path program 1 times [2020-10-14 23:08:57,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:08:57,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [456274642] [2020-10-14 23:08:57,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:08:57,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:08:57,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:08:57,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:08:57,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:08:57,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:08:58,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:09:00,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:09:02,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:09:02,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-14 23:09:02,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 23:09:02,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 23:09:02,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:09:02,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:09:02,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:09:02,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:09:02,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-14 23:09:02,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:09:02,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:09:02,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:09:02,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:09:02,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:09:02,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:09:02,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:09:02,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:09:02,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:09:02,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:09:02,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:09:02,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:09:02,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:09:02,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 23:09:02,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:09:02,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:09:02,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:09:02,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:09:02,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 23:09:02,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:09:02,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 23:09:02,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:09:02,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:09:02,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:09:02,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:09:02,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 23:09:02,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:09:02,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-14 23:09:02,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:09:02,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:09:02,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:09:02,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:09:02,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 23:09:02,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:09:02,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-14 23:09:02,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:09:02,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:09:02,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:09:02,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:09:02,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 23:09:02,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:09:03,042 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-14 23:09:03,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [456274642] [2020-10-14 23:09:03,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:09:03,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 23:09:03,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645739879] [2020-10-14 23:09:03,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:09:03,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:09:03,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:09:03,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:09:03,044 INFO L87 Difference]: Start difference. First operand 17934 states and 24112 transitions. Second operand 7 states.