/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=NARROWEST --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_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:10:59,752 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:10:59,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:10:59,796 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:10:59,796 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:10:59,805 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:10:59,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:10:59,810 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:10:59,813 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:10:59,817 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:10:59,818 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:10:59,819 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:10:59,819 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:10:59,822 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:10:59,824 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:10:59,826 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:10:59,827 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:10:59,828 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:10:59,830 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:10:59,837 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:10:59,840 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:10:59,841 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:10:59,842 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:10:59,842 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:10:59,854 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:10:59,854 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:10:59,855 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:10:59,861 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:10:59,861 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:10:59,865 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:10:59,866 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:10:59,866 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:10:59,867 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:10:59,868 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:10:59,870 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:10:59,870 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:10:59,873 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:10:59,873 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:10:59,874 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:10:59,875 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:10:59,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:10:59,877 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 [2020-10-13 10:10:59,919 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:10:59,920 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:10:59,922 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:10:59,922 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:10:59,922 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:10:59,923 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:10:59,923 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:10:59,923 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:10:59,923 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:10:59,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:10:59,924 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:10:59,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:10:59,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:10:59,925 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:10:59,925 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:10:59,926 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:10:59,926 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:10:59,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:10:59,926 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:10:59,926 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:10:59,927 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:10:59,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:10:59,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:10:59,927 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:10:59,928 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:10:59,928 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:10:59,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:10:59,928 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:10:59,928 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:10:59,929 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 10:11:00,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:11:00,230 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:11:00,233 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:11:00,235 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:11:00,235 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:11:00,236 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label52.c [2020-10-13 10:11:00,297 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81352c369/cb6df124aa144a748f94094885641d75/FLAG5cb7363c0 [2020-10-13 10:11:01,148 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:11:01,149 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label52.c [2020-10-13 10:11:01,191 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81352c369/cb6df124aa144a748f94094885641d75/FLAG5cb7363c0 [2020-10-13 10:11:01,654 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81352c369/cb6df124aa144a748f94094885641d75 [2020-10-13 10:11:01,664 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:11:01,666 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:11:01,667 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:11:01,667 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:11:01,671 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:11:01,672 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:11:01" (1/1) ... [2020-10-13 10:11:01,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a556b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:11:01, skipping insertion in model container [2020-10-13 10:11:01,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:11:01" (1/1) ... [2020-10-13 10:11:01,686 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:11:01,957 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:11:04,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:11:04,267 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:11:05,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:11:05,360 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:11:05,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:11:05 WrapperNode [2020-10-13 10:11:05,362 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:11:05,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:11:05,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:11:05,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:11:05,379 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:11:05" (1/1) ... [2020-10-13 10:11:05,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:11:05" (1/1) ... [2020-10-13 10:11:05,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:11:05" (1/1) ... [2020-10-13 10:11:05,481 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:11:05" (1/1) ... [2020-10-13 10:11:05,639 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:11:05" (1/1) ... [2020-10-13 10:11:05,800 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:11:05" (1/1) ... [2020-10-13 10:11:05,847 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:11:05" (1/1) ... [2020-10-13 10:11:05,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:11:05,918 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:11:05,918 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:11:05,918 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:11:05,920 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:11:05" (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 [2020-10-13 10:11:05,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:11:05,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:11:05,995 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 10:11:05,995 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 10:11:05,995 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 10:11:05,996 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 10:11:05,996 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-13 10:11:05,996 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-13 10:11:05,996 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:11:05,997 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 10:11:05,997 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 10:11:05,997 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 10:11:05,997 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 10:11:05,997 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-13 10:11:05,998 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-13 10:11:05,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:11:05,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 10:11:05,998 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 10:11:05,998 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:11:05,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:11:05,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:11:18,769 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:11:18,769 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 10:11:18,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:11:18 BoogieIcfgContainer [2020-10-13 10:11:18,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:11:18,785 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:11:18,785 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:11:18,788 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:11:18,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:11:01" (1/3) ... [2020-10-13 10:11:18,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10794ecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:11:18, skipping insertion in model container [2020-10-13 10:11:18,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:11:05" (2/3) ... [2020-10-13 10:11:18,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10794ecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:11:18, skipping insertion in model container [2020-10-13 10:11:18,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:11:18" (3/3) ... [2020-10-13 10:11:18,792 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label52.c [2020-10-13 10:11:18,803 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:11:18,813 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:11:18,828 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:11:18,860 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:11:18,860 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:11:18,860 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:11:18,860 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:11:18,860 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:11:18,861 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:11:18,861 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:11:18,861 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:11:18,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-13 10:11:18,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-13 10:11:18,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:11:18,918 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:11:18,919 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:11:18,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:11:18,926 INFO L82 PathProgramCache]: Analyzing trace with hash 219048412, now seen corresponding path program 1 times [2020-10-13 10:11:18,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:11:18,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983408116] [2020-10-13 10:11:18,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:11:19,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:11:19,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:11:19,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:11:19,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 10:11:19,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:11:19,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 462 [2020-10-13 10:11:19,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:11:19,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:11:19,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:11:19,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 10:11:19,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 10:11:19,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:11:19,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:11:19,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:11:19,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:11:19,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:11:19,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:11:19,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 10:11:19,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:11:19,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:11:19,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:11:19,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 10:11:19,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:11:19,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:11:19,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1983408116] [2020-10-13 10:11:19,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:11:19,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 10:11:19,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91787428] [2020-10-13 10:11:19,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:11:19,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:11:19,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:11:19,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:11:19,877 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2020-10-13 10:11:41,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:11:41,831 INFO L93 Difference]: Finished difference Result 5031 states and 9453 transitions. [2020-10-13 10:11:41,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 10:11:41,834 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-10-13 10:11:41,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:11:41,876 INFO L225 Difference]: With dead ends: 5031 [2020-10-13 10:11:41,876 INFO L226 Difference]: Without dead ends: 3190 [2020-10-13 10:11:41,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:11:41,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3190 states. [2020-10-13 10:11:42,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3190 to 3184. [2020-10-13 10:11:42,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3184 states. [2020-10-13 10:11:42,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3184 states to 3184 states and 4965 transitions. [2020-10-13 10:11:42,097 INFO L78 Accepts]: Start accepts. Automaton has 3184 states and 4965 transitions. Word has length 61 [2020-10-13 10:11:42,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:11:42,098 INFO L479 AbstractCegarLoop]: Abstraction has 3184 states and 4965 transitions. [2020-10-13 10:11:42,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:11:42,098 INFO L276 IsEmpty]: Start isEmpty. Operand 3184 states and 4965 transitions. [2020-10-13 10:11:42,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-13 10:11:42,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:11:42,105 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:11:42,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:11:42,106 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:11:42,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:11:42,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1551768197, now seen corresponding path program 1 times [2020-10-13 10:11:42,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:11:42,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1366416526] [2020-10-13 10:11:42,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:11:42,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:11:42,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:11:42,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:11:42,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:11:42,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:11:43,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:11:44,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:11:44,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:11:44,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 10:11:44,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 10:11:44,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2051 [2020-10-13 10:11:44,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:11:44,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:11:44,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-13 10:11:44,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 10:11:44,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:11:44,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:11:44,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:11:44,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:11:44,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:11:44,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:11:44,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:11:44,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:11:44,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:11:44,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:11:44,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:11:44,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:11:44,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:11:44,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 10:11:44,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:11:44,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:11:44,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:11:44,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 10:11:44,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:11:44,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 10:11:44,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:11:44,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:11:44,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-13 10:11:44,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 10:11:44,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:11:44,463 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:11:44,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1366416526] [2020-10-13 10:11:44,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:11:44,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 10:11:44,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887499419] [2020-10-13 10:11:44,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:11:44,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:11:44,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:11:44,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:11:44,467 INFO L87 Difference]: Start difference. First operand 3184 states and 4965 transitions. Second operand 5 states. [2020-10-13 10:12:16,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:12:16,148 INFO L93 Difference]: Finished difference Result 9218 states and 14512 transitions. [2020-10-13 10:12:16,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 10:12:16,154 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-10-13 10:12:16,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:12:16,183 INFO L225 Difference]: With dead ends: 9218 [2020-10-13 10:12:16,183 INFO L226 Difference]: Without dead ends: 6040 [2020-10-13 10:12:16,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:12:16,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6040 states. [2020-10-13 10:12:16,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6040 to 6024. [2020-10-13 10:12:16,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6024 states. [2020-10-13 10:12:16,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6024 states to 6024 states and 8357 transitions. [2020-10-13 10:12:16,355 INFO L78 Accepts]: Start accepts. Automaton has 6024 states and 8357 transitions. Word has length 134 [2020-10-13 10:12:16,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:12:16,358 INFO L479 AbstractCegarLoop]: Abstraction has 6024 states and 8357 transitions. [2020-10-13 10:12:16,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:12:16,359 INFO L276 IsEmpty]: Start isEmpty. Operand 6024 states and 8357 transitions. [2020-10-13 10:12:16,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-13 10:12:16,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:12:16,372 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:12:16,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:12:16,372 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:12:16,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:12:16,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1349944263, now seen corresponding path program 1 times [2020-10-13 10:12:16,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:12:16,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1145446170] [2020-10-13 10:12:16,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:12:16,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:12:16,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:12:16,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:12:16,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:12:17,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:12:18,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:12:18,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 10:12:18,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:12:18,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1874 [2020-10-13 10:12:18,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:12:18,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:12:18,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-13 10:12:18,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 10:12:18,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:12:18,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:12:18,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:12:18,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:12:18,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:12:18,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:12:18,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:12:18,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:12:18,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:12:18,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:12:18,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:12:18,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:12:18,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:12:18,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 10:12:18,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:12:18,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:12:18,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:12:18,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 10:12:18,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:12:18,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-13 10:12:18,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:12:18,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:12:18,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:12:18,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 10:12:18,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:12:18,706 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 53 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:12:18,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1145446170] [2020-10-13 10:12:18,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:12:18,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 10:12:18,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613505028] [2020-10-13 10:12:18,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:12:18,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:12:18,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:12:18,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:12:18,711 INFO L87 Difference]: Start difference. First operand 6024 states and 8357 transitions. Second operand 6 states. [2020-10-13 10:13:15,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:13:15,134 INFO L93 Difference]: Finished difference Result 19104 states and 27681 transitions. [2020-10-13 10:13:15,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 10:13:15,137 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2020-10-13 10:13:15,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:13:15,204 INFO L225 Difference]: With dead ends: 19104 [2020-10-13 10:13:15,204 INFO L226 Difference]: Without dead ends: 13086 [2020-10-13 10:13:15,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:13:15,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13086 states. [2020-10-13 10:13:15,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13086 to 11685. [2020-10-13 10:13:15,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11685 states. [2020-10-13 10:13:15,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11685 states to 11685 states and 16031 transitions. [2020-10-13 10:13:15,674 INFO L78 Accepts]: Start accepts. Automaton has 11685 states and 16031 transitions. Word has length 134 [2020-10-13 10:13:15,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:13:15,675 INFO L479 AbstractCegarLoop]: Abstraction has 11685 states and 16031 transitions. [2020-10-13 10:13:15,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:13:15,680 INFO L276 IsEmpty]: Start isEmpty. Operand 11685 states and 16031 transitions. [2020-10-13 10:13:15,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-13 10:13:15,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:13:15,688 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:13:15,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 10:13:15,689 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:13:15,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:13:15,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1623067490, now seen corresponding path program 1 times [2020-10-13 10:13:15,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:13:15,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047052534] [2020-10-13 10:13:15,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:13:15,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:13:15,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:13:15,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:13:17,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:13:18,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:13:18,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-13 10:13:18,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:13:18,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3133 [2020-10-13 10:13:18,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:13:18,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:13:18,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-13 10:13:18,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 10:13:18,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:13:19,374 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 29 [2020-10-13 10:13:19,671 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 29 [2020-10-13 10:13:19,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:13:19,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:13:19,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:13:19,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:13:19,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:13:19,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:13:19,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:13:19,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:13:19,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:13:19,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:13:19,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:13:19,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:13:19,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 10:13:19,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:13:19,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:13:19,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:13:19,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 10:13:19,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:13:19,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-13 10:13:19,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:13:19,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:13:19,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:13:19,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-13 10:13:19,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:13:20,131 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 53 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:13:20,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047052534] [2020-10-13 10:13:20,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:13:20,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 10:13:20,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892927125] [2020-10-13 10:13:20,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 10:13:20,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:13:20,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 10:13:20,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-13 10:13:20,138 INFO L87 Difference]: Start difference. First operand 11685 states and 16031 transitions. Second operand 7 states. [2020-10-13 10:13:21,869 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-10-13 10:13:22,279 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2020-10-13 10:14:15,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:14:15,277 INFO L93 Difference]: Finished difference Result 23510 states and 32297 transitions. [2020-10-13 10:14:15,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:14:15,280 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2020-10-13 10:14:15,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:14:15,328 INFO L225 Difference]: With dead ends: 23510 [2020-10-13 10:14:15,329 INFO L226 Difference]: Without dead ends: 11689 [2020-10-13 10:14:15,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:14:15,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11689 states. [2020-10-13 10:14:15,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11689 to 11685. [2020-10-13 10:14:15,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11685 states. [2020-10-13 10:14:15,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11685 states to 11685 states and 16014 transitions. [2020-10-13 10:14:15,655 INFO L78 Accepts]: Start accepts. Automaton has 11685 states and 16014 transitions. Word has length 181 [2020-10-13 10:14:15,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:14:15,657 INFO L479 AbstractCegarLoop]: Abstraction has 11685 states and 16014 transitions. [2020-10-13 10:14:15,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 10:14:15,658 INFO L276 IsEmpty]: Start isEmpty. Operand 11685 states and 16014 transitions. [2020-10-13 10:14:15,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-13 10:14:15,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:14:15,664 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 10:14:15,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 10:14:15,665 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:14:15,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:14:15,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1446569242, now seen corresponding path program 1 times [2020-10-13 10:14:15,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:14:15,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998660796] [2020-10-13 10:14:15,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:14:15,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:14:15,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:14:15,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:14:15,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:14:16,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:14:16,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:14:19,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:14:20,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:14:20,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-13 10:14:20,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 10:14:20,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 10:14:20,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:14:20,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:14:20,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-10-13 10:14:20,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 10:14:20,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:14:20,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:14:20,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:14:20,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:14:20,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:14:20,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:14:20,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:14:20,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:14:20,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:14:20,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:14:20,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:14:20,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:14:20,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:14:20,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 10:14:20,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:14:20,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:14:20,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:14:20,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 10:14:20,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:14:20,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 10:14:20,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:14:20,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:14:20,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:14:20,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:14:20,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-13 10:14:20,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 10:14:20,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:14:20,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:14:21,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:14:21,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 10:14:21,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:14:21,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 10:14:21,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:14:21,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:14:21,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-13 10:14:21,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 10:14:21,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:14:21,138 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-13 10:14:21,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998660796] [2020-10-13 10:14:21,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:14:21,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 10:14:21,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146828418] [2020-10-13 10:14:21,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:14:21,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:14:21,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:14:21,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:14:21,142 INFO L87 Difference]: Start difference. First operand 11685 states and 16014 transitions. Second operand 5 states.