/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_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:13:15,734 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:13:15,738 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:13:15,794 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:13:15,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:13:15,806 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:13:15,810 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:13:15,814 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:13:15,818 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:13:15,823 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:13:15,825 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:13:15,826 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:13:15,827 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:13:15,830 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:13:15,833 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:13:15,836 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:13:15,838 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:13:15,839 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:13:15,841 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:13:15,853 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:13:15,856 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:13:15,857 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:13:15,859 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:13:15,860 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:13:15,880 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:13:15,880 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:13:15,880 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:13:15,882 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:13:15,882 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:13:15,883 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:13:15,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:13:15,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:13:15,891 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:13:15,895 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:13:15,897 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:13:15,897 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:13:15,898 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:13:15,898 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:13:15,898 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:13:15,899 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:13:15,904 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:13:15,905 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 10:13:15,949 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:13:15,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:13:15,952 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:13:15,953 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:13:15,953 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:13:15,953 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:13:15,954 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:13:15,954 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:13:15,954 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:13:15,954 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:13:15,955 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:13:15,956 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:13:15,956 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:13:15,956 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:13:15,957 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:13:15,957 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:13:15,957 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:13:15,957 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:13:15,957 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:13:15,958 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:13:15,958 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:13:15,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:13:15,959 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:13:15,959 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:13:15,959 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:13:15,959 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:13:15,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:13:15,960 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:13:15,960 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:13:15,960 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 10:13:16,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:13:16,373 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:13:16,377 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:13:16,379 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:13:16,380 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:13:16,381 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label56.c [2020-10-13 10:13:16,455 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09ae76558/db378866d3fc4247bba4144bbf4ea97f/FLAGad636fba0 [2020-10-13 10:13:17,538 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:13:17,539 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label56.c [2020-10-13 10:13:17,615 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09ae76558/db378866d3fc4247bba4144bbf4ea97f/FLAGad636fba0 [2020-10-13 10:13:17,870 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09ae76558/db378866d3fc4247bba4144bbf4ea97f [2020-10-13 10:13:17,881 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:13:17,883 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:13:17,885 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:13:17,885 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:13:17,890 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:13:17,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:13:17" (1/1) ... [2020-10-13 10:13:17,896 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4839a71c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:13:17, skipping insertion in model container [2020-10-13 10:13:17,896 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:13:17" (1/1) ... [2020-10-13 10:13:17,906 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:13:18,192 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:13:21,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:13:21,326 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:13:22,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:13:22,551 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:13:22,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:13:22 WrapperNode [2020-10-13 10:13:22,552 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:13:22,553 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:13:22,553 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:13:22,553 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:13:22,572 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:13:22" (1/1) ... [2020-10-13 10:13:22,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:13:22" (1/1) ... [2020-10-13 10:13:22,681 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:13:22" (1/1) ... [2020-10-13 10:13:22,682 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:13:22" (1/1) ... [2020-10-13 10:13:22,880 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:13:22" (1/1) ... [2020-10-13 10:13:22,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:13:22" (1/1) ... [2020-10-13 10:13:23,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:13:22" (1/1) ... [2020-10-13 10:13:23,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:13:23,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:13:23,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:13:23,171 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:13:23,173 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:13:22" (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 10:13:23,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:13:23,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:13:23,267 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 10:13:23,402 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 10:13:23,403 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 10:13:23,403 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 10:13:23,403 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-13 10:13:23,404 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-13 10:13:23,404 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:13:23,404 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 10:13:23,404 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 10:13:23,405 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 10:13:23,405 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 10:13:23,405 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-13 10:13:23,405 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-13 10:13:23,406 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:13:23,406 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 10:13:23,406 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 10:13:23,406 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:13:23,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:13:23,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:13:38,719 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:13:38,719 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 10:13:38,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:13:38 BoogieIcfgContainer [2020-10-13 10:13:38,740 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:13:38,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:13:38,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:13:38,747 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:13:38,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:13:17" (1/3) ... [2020-10-13 10:13:38,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ebee847 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:13:38, skipping insertion in model container [2020-10-13 10:13:38,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:13:22" (2/3) ... [2020-10-13 10:13:38,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ebee847 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:13:38, skipping insertion in model container [2020-10-13 10:13:38,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:13:38" (3/3) ... [2020-10-13 10:13:38,753 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label56.c [2020-10-13 10:13:38,768 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:13:38,786 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:13:38,804 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:13:38,845 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:13:38,846 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:13:38,846 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:13:38,846 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:13:38,846 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:13:38,846 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:13:38,846 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:13:38,846 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:13:38,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-13 10:13:38,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 10:13:38,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:13:38,916 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] [2020-10-13 10:13:38,916 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:13:38,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:13:38,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1696606132, now seen corresponding path program 1 times [2020-10-13 10:13:38,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:13:38,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425468740] [2020-10-13 10:13:38,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:13:39,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:13:39,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:13:39,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:13:39,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 10:13:39,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:13:39,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 562 [2020-10-13 10:13:39,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:13:39,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:13:39,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:13:39,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 10:13:39,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 10:13:39,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:13:39,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:13:39,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:13:39,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:13:39,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:13:39,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:13:39,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 10:13:39,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:13:39,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:13:39,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:13:39,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 10:13:39,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:13:40,022 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 10:13:40,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425468740] [2020-10-13 10:13:40,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:13:40,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 10:13:40,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87593650] [2020-10-13 10:13:40,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:13:40,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:13:40,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:13:40,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:13:40,066 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2020-10-13 10:14:11,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:14:11,251 INFO L93 Difference]: Finished difference Result 5076 states and 9543 transitions. [2020-10-13 10:14:11,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 10:14:11,254 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-10-13 10:14:11,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:14:11,312 INFO L225 Difference]: With dead ends: 5076 [2020-10-13 10:14:11,312 INFO L226 Difference]: Without dead ends: 3219 [2020-10-13 10:14:11,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:14:11,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2020-10-13 10:14:11,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 3194. [2020-10-13 10:14:11,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3194 states. [2020-10-13 10:14:11,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3194 states to 3194 states and 5073 transitions. [2020-10-13 10:14:11,625 INFO L78 Accepts]: Start accepts. Automaton has 3194 states and 5073 transitions. Word has length 57 [2020-10-13 10:14:11,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:14:11,627 INFO L479 AbstractCegarLoop]: Abstraction has 3194 states and 5073 transitions. [2020-10-13 10:14:11,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:14:11,628 INFO L276 IsEmpty]: Start isEmpty. Operand 3194 states and 5073 transitions. [2020-10-13 10:14:11,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-13 10:14:11,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:14:11,647 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, 1, 1, 1, 1, 1, 1, 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 10:14:11,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:14:11,648 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:14:11,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:14:11,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1000428320, now seen corresponding path program 1 times [2020-10-13 10:14:11,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:14:11,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867575875] [2020-10-13 10:14:11,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:14:11,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:14:11,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:14:11,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:14:12,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:14:13,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:14:13,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:14:13,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 10:14:13,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:14:13,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2019 [2020-10-13 10:14:13,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:14:13,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:14:13,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 10:14:13,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 10:14:13,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-13 10:14:13,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:14:13,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:14:13,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:14:13,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:14:13,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:14:13,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:14:13,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:14:13,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:14:13,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:14:13,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:14:13,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:14:13,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:14:13,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 10:14:13,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:14:13,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:14:13,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:14:13,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 10:14:13,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:14:13,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 10:14:13,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:14:13,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:14:13,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-13 10:14:13,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 10:14:13,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:14:14,026 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:14:14,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1867575875] [2020-10-13 10:14:14,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:14:14,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 10:14:14,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136370827] [2020-10-13 10:14:14,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:14:14,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:14:14,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:14:14,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:14:14,031 INFO L87 Difference]: Start difference. First operand 3194 states and 5073 transitions. Second operand 5 states. [2020-10-13 10:14:52,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:14:52,716 INFO L93 Difference]: Finished difference Result 9336 states and 14967 transitions. [2020-10-13 10:14:52,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 10:14:52,722 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-13 10:14:52,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:14:52,767 INFO L225 Difference]: With dead ends: 9336 [2020-10-13 10:14:52,767 INFO L226 Difference]: Without dead ends: 6148 [2020-10-13 10:14:52,780 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 10:14:52,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6148 states. [2020-10-13 10:14:52,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6148 to 6077. [2020-10-13 10:14:52,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6077 states. [2020-10-13 10:14:53,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6077 states to 6077 states and 9113 transitions. [2020-10-13 10:14:53,026 INFO L78 Accepts]: Start accepts. Automaton has 6077 states and 9113 transitions. Word has length 128 [2020-10-13 10:14:53,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:14:53,030 INFO L479 AbstractCegarLoop]: Abstraction has 6077 states and 9113 transitions. [2020-10-13 10:14:53,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:14:53,030 INFO L276 IsEmpty]: Start isEmpty. Operand 6077 states and 9113 transitions. [2020-10-13 10:14:53,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-13 10:14:53,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:14:53,046 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:14:53,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:14:53,046 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:14:53,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:14:53,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1725373406, now seen corresponding path program 1 times [2020-10-13 10:14:53,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:14:53,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011195207] [2020-10-13 10:14:53,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:14:53,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:14:53,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:14:53,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:14:54,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:14:54,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 10:14:54,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:14:54,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1177 [2020-10-13 10:14:54,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:14:54,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:14:54,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-13 10:14:54,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 10:14:54,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:14:54,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:14:54,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:14:54,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:14:54,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:14:54,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:14:54,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:14:54,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:14:54,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:14:54,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:14:54,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:14:54,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:14:54,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:14:54,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 10:14:54,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:14:54,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:14:54,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:14:54,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 10:14:54,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:14:54,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-13 10:14:54,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:14:54,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:14:54,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:14:54,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 10:14:54,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:14:54,873 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:14:54,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011195207] [2020-10-13 10:14:54,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:14:54,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 10:14:54,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685032051] [2020-10-13 10:14:54,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:14:54,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:14:54,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:14:54,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:14:54,879 INFO L87 Difference]: Start difference. First operand 6077 states and 9113 transitions. Second operand 5 states. [2020-10-13 10:15:48,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:15:48,960 INFO L93 Difference]: Finished difference Result 15050 states and 23056 transitions. [2020-10-13 10:15:48,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 10:15:48,963 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-10-13 10:15:48,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:15:49,004 INFO L225 Difference]: With dead ends: 15050 [2020-10-13 10:15:49,005 INFO L226 Difference]: Without dead ends: 8979 [2020-10-13 10:15:49,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:15:49,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8979 states. [2020-10-13 10:15:49,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8979 to 8920. [2020-10-13 10:15:49,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8920 states. [2020-10-13 10:15:49,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8920 states to 8920 states and 12744 transitions. [2020-10-13 10:15:49,251 INFO L78 Accepts]: Start accepts. Automaton has 8920 states and 12744 transitions. Word has length 138 [2020-10-13 10:15:49,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:15:49,252 INFO L479 AbstractCegarLoop]: Abstraction has 8920 states and 12744 transitions. [2020-10-13 10:15:49,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:15:49,252 INFO L276 IsEmpty]: Start isEmpty. Operand 8920 states and 12744 transitions. [2020-10-13 10:15:49,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-13 10:15:49,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:15:49,262 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:15:49,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 10:15:49,263 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:15:49,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:15:49,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1905006968, now seen corresponding path program 1 times [2020-10-13 10:15:49,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:15:49,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1102908052] [2020-10-13 10:15:49,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:15:49,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:15:49,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:15:49,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:15:50,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:15:51,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:15:51,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-13 10:15:51,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:15:51,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1932 [2020-10-13 10:15:51,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:15:51,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:15:51,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-13 10:15:51,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 10:15:51,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:15:51,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:15:51,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:15:51,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:15:51,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:15:51,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:15:51,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:15:51,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:15:51,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:15:51,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:15:51,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:15:51,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:15:51,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:15:51,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 10:15:51,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:15:51,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:15:51,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:15:51,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 10:15:51,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:15:51,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-13 10:15:51,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:15:51,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:15:51,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:15:51,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 10:15:51,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:15:51,732 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:15:51,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1102908052] [2020-10-13 10:15:51,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:15:51,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 10:15:51,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056306433] [2020-10-13 10:15:51,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:15:51,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:15:51,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:15:51,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:15:51,736 INFO L87 Difference]: Start difference. First operand 8920 states and 12744 transitions. Second operand 5 states. [2020-10-13 10:16:25,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:16:25,788 INFO L93 Difference]: Finished difference Result 17856 states and 25524 transitions. [2020-10-13 10:16:25,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 10:16:25,795 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-10-13 10:16:25,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:16:25,832 INFO L225 Difference]: With dead ends: 17856 [2020-10-13 10:16:25,832 INFO L226 Difference]: Without dead ends: 8924 [2020-10-13 10:16:25,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:16:25,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8924 states. [2020-10-13 10:16:26,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8924 to 8920. [2020-10-13 10:16:26,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8920 states. [2020-10-13 10:16:26,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8920 states to 8920 states and 12740 transitions. [2020-10-13 10:16:26,077 INFO L78 Accepts]: Start accepts. Automaton has 8920 states and 12740 transitions. Word has length 158 [2020-10-13 10:16:26,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:16:26,079 INFO L479 AbstractCegarLoop]: Abstraction has 8920 states and 12740 transitions. [2020-10-13 10:16:26,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:16:26,079 INFO L276 IsEmpty]: Start isEmpty. Operand 8920 states and 12740 transitions. [2020-10-13 10:16:26,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-13 10:16:26,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:16:26,083 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:16:26,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 10:16:26,085 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:16:26,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:16:26,086 INFO L82 PathProgramCache]: Analyzing trace with hash 917972616, now seen corresponding path program 1 times [2020-10-13 10:16:26,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:16:26,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2109306938] [2020-10-13 10:16:26,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:16:26,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:16:26,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:16:26,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:16:27,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:16:27,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:16:27,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 10:16:27,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:16:27,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1352 [2020-10-13 10:16:27,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:16:27,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:16:27,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-13 10:16:27,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 10:16:27,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:16:27,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:16:27,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:16:27,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:16:27,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:16:27,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:16:27,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:16:27,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:16:27,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:16:27,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:16:27,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:16:27,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:16:27,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:16:27,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 10:16:27,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:16:27,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:16:27,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:16:27,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 10:16:27,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:16:27,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-13 10:16:27,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:16:27,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:16:27,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:16:27,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-13 10:16:27,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:16:27,978 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:16:27,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2109306938] [2020-10-13 10:16:27,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:16:27,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 10:16:27,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540050990] [2020-10-13 10:16:27,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:16:27,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:16:27,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:16:27,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:16:27,982 INFO L87 Difference]: Start difference. First operand 8920 states and 12740 transitions. Second operand 5 states. [2020-10-13 10:17:11,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:17:11,685 INFO L93 Difference]: Finished difference Result 17856 states and 25516 transitions. [2020-10-13 10:17:11,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 10:17:11,689 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-10-13 10:17:11,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:17:11,715 INFO L225 Difference]: With dead ends: 17856 [2020-10-13 10:17:11,716 INFO L226 Difference]: Without dead ends: 8924 [2020-10-13 10:17:11,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:17:11,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8924 states. [2020-10-13 10:17:11,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8924 to 8920. [2020-10-13 10:17:11,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8920 states. [2020-10-13 10:17:11,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8920 states to 8920 states and 12736 transitions. [2020-10-13 10:17:11,914 INFO L78 Accepts]: Start accepts. Automaton has 8920 states and 12736 transitions. Word has length 166 [2020-10-13 10:17:11,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:17:11,915 INFO L479 AbstractCegarLoop]: Abstraction has 8920 states and 12736 transitions. [2020-10-13 10:17:11,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:17:11,915 INFO L276 IsEmpty]: Start isEmpty. Operand 8920 states and 12736 transitions. [2020-10-13 10:17:11,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-13 10:17:11,918 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:17:11,919 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:17:11,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 10:17:11,919 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:17:11,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:17:11,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1376111720, now seen corresponding path program 1 times [2020-10-13 10:17:11,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:17:11,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1239112918] [2020-10-13 10:17:11,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:17:11,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:17:11,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:17:12,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:17:12,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:17:13,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:17:13,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 10:17:13,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:17:13,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1211 [2020-10-13 10:17:13,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:17:13,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:17:13,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-13 10:17:13,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 10:17:13,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:17:13,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:17:13,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:17:13,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:17:13,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:17:13,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:17:13,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:17:13,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:17:13,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:17:13,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:17:13,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:17:13,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:17:13,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:17:13,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 10:17:13,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:17:13,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:17:13,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:17:13,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 10:17:13,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:17:13,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-13 10:17:13,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:17:13,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:17:13,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:17:13,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-13 10:17:13,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:17:13,609 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:17:13,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1239112918] [2020-10-13 10:17:13,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:17:13,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 10:17:13,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699989809] [2020-10-13 10:17:13,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:17:13,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:17:13,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:17:13,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:17:13,614 INFO L87 Difference]: Start difference. First operand 8920 states and 12736 transitions. Second operand 6 states.