/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 SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:24:21,793 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:24:21,798 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:24:21,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:24:21,845 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:24:21,857 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:24:21,858 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:24:21,863 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:24:21,867 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:24:21,869 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:24:21,871 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:24:21,873 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:24:21,873 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:24:21,877 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:24:21,880 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:24:21,882 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:24:21,884 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:24:21,886 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:24:21,888 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:24:21,895 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:24:21,898 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:24:21,899 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:24:21,901 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:24:21,902 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:24:21,907 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:24:21,907 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:24:21,908 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:24:21,911 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:24:21,912 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:24:21,913 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:24:21,913 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:24:21,914 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:24:21,915 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:24:21,916 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:24:21,917 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:24:21,918 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:24:21,919 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:24:21,919 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:24:21,919 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:24:21,920 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:24:21,922 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:24:21,923 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 [2020-09-25 12:24:21,973 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:24:21,974 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:24:21,976 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:24:21,977 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:24:21,977 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:24:21,977 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:24:21,977 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:24:21,978 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:24:21,978 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:24:21,978 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:24:21,979 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:24:21,979 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:24:21,980 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:24:21,980 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:24:21,980 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:24:21,980 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:24:21,981 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:24:21,981 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:24:21,981 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:24:21,981 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:24:21,981 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:24:21,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:24:21,982 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:24:21,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:24:21,982 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:24:21,983 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:24:21,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:24:21,983 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:24:21,983 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:24:21,983 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 -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:24:22,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:24:22,443 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:24:22,448 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:24:22,450 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:24:22,451 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:24:22,452 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label30.c [2020-09-25 12:24:22,533 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e833825b2/7e68654096834ef7a7db449f73d99a09/FLAGd861af0f5 [2020-09-25 12:24:23,191 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:24:23,192 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label30.c [2020-09-25 12:24:23,219 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e833825b2/7e68654096834ef7a7db449f73d99a09/FLAGd861af0f5 [2020-09-25 12:24:23,432 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e833825b2/7e68654096834ef7a7db449f73d99a09 [2020-09-25 12:24:23,446 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:24:23,452 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:24:23,453 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:24:23,453 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:24:23,458 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:24:23,459 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:24:23" (1/1) ... [2020-09-25 12:24:23,463 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@406521a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:23, skipping insertion in model container [2020-09-25 12:24:23,464 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:24:23" (1/1) ... [2020-09-25 12:24:23,472 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:24:23,537 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:24:23,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:24:23,968 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:24:24,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:24:24,214 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:24:24,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:24 WrapperNode [2020-09-25 12:24:24,217 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:24:24,219 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:24:24,219 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:24:24,219 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:24:24,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:24" (1/1) ... [2020-09-25 12:24:24,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:24" (1/1) ... [2020-09-25 12:24:24,287 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:24" (1/1) ... [2020-09-25 12:24:24,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:24" (1/1) ... [2020-09-25 12:24:24,343 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:24" (1/1) ... [2020-09-25 12:24:24,369 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:24" (1/1) ... [2020-09-25 12:24:24,384 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:24" (1/1) ... [2020-09-25 12:24:24,401 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:24:24,401 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:24:24,401 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:24:24,402 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:24:24,408 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:24" (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 [2020-09-25 12:24:24,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:24:24,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:24:24,486 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:24:24,486 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:24:24,486 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:24:24,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:24:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:24:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:24:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:24:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:24:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:24:25,867 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:24:25,868 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:24:25,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:24:25 BoogieIcfgContainer [2020-09-25 12:24:25,877 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:24:25,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:24:25,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:24:25,883 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:24:25,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:24:23" (1/3) ... [2020-09-25 12:24:25,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@614732b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:24:25, skipping insertion in model container [2020-09-25 12:24:25,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:24" (2/3) ... [2020-09-25 12:24:25,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@614732b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:24:25, skipping insertion in model container [2020-09-25 12:24:25,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:24:25" (3/3) ... [2020-09-25 12:24:25,887 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label30.c [2020-09-25 12:24:25,900 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:24:25,911 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:24:25,935 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:24:25,971 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:24:25,971 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:24:25,971 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:24:25,971 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:24:25,972 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:24:25,972 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:24:25,972 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:24:25,972 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:24:26,005 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 12:24:26,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 12:24:26,028 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:24:26,029 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:24:26,030 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:24:26,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:24:26,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1296859345, now seen corresponding path program 1 times [2020-09-25 12:24:26,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:24:26,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720344855] [2020-09-25 12:24:26,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:24:26,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:26,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:26,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:27,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:27,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:29,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:30,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:30,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:31,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:31,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 12:24:31,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:24:31,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 12:24:31,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:31,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:31,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:24:31,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 12:24:31,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-09-25 12:24:31,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 12:24:31,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:24:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:31,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:31,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:31,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:24:31,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:24:31,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 12:24:31,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:31,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:31,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:24:31,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:24:31,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 12:24:31,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:24:31,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:24:31,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1720344855] [2020-09-25 12:24:31,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:24:31,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:24:31,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657422206] [2020-09-25 12:24:31,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:24:31,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:24:31,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:24:31,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:24:31,714 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 5 states. [2020-09-25 12:24:33,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:24:33,844 INFO L93 Difference]: Finished difference Result 1205 states and 1651 transitions. [2020-09-25 12:24:33,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:24:33,850 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-09-25 12:24:33,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:24:33,875 INFO L225 Difference]: With dead ends: 1205 [2020-09-25 12:24:33,876 INFO L226 Difference]: Without dead ends: 627 [2020-09-25 12:24:33,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:24:33,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-09-25 12:24:33,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 613. [2020-09-25 12:24:33,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-09-25 12:24:33,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 774 transitions. [2020-09-25 12:24:33,998 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 774 transitions. Word has length 154 [2020-09-25 12:24:34,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:24:34,000 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 774 transitions. [2020-09-25 12:24:34,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:24:34,000 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 774 transitions. [2020-09-25 12:24:34,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-25 12:24:34,008 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:24:34,009 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:24:34,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:24:34,009 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:24:34,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:24:34,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1108398122, now seen corresponding path program 1 times [2020-09-25 12:24:34,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:24:34,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1798112041] [2020-09-25 12:24:34,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:24:34,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:34,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:34,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:35,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:36,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:38,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:38,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:38,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:38,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:39,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:39,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-09-25 12:24:39,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:24:39,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 12:24:39,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:39,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:39,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:24:39,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 12:24:39,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-09-25 12:24:39,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:24:39,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:24:39,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:39,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:39,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:39,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:24:39,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:24:39,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 12:24:39,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:39,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:39,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:24:39,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:24:39,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:24:39,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:24:39,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:24:39,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:39,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:39,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:39,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 12:24:39,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:24:39,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 12:24:39,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:39,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:39,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:24:39,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:24:39,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 12:24:39,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:24:39,461 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:24:39,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1798112041] [2020-09-25 12:24:39,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:24:39,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:24:39,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245368644] [2020-09-25 12:24:39,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:24:39,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:24:39,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:24:39,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:24:39,465 INFO L87 Difference]: Start difference. First operand 613 states and 774 transitions. Second operand 5 states. [2020-09-25 12:24:41,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:24:41,869 INFO L93 Difference]: Finished difference Result 1627 states and 2137 transitions. [2020-09-25 12:24:41,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:24:41,870 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2020-09-25 12:24:41,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:24:41,878 INFO L225 Difference]: With dead ends: 1627 [2020-09-25 12:24:41,879 INFO L226 Difference]: Without dead ends: 1036 [2020-09-25 12:24:41,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:24:41,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2020-09-25 12:24:41,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 923. [2020-09-25 12:24:41,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 923 states. [2020-09-25 12:24:41,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1195 transitions. [2020-09-25 12:24:41,933 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1195 transitions. Word has length 180 [2020-09-25 12:24:41,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:24:41,933 INFO L479 AbstractCegarLoop]: Abstraction has 923 states and 1195 transitions. [2020-09-25 12:24:41,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:24:41,934 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1195 transitions. [2020-09-25 12:24:41,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-09-25 12:24:41,940 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:24:41,940 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:24:41,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:24:41,941 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:24:41,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:24:41,941 INFO L82 PathProgramCache]: Analyzing trace with hash 566216652, now seen corresponding path program 1 times [2020-09-25 12:24:41,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:24:41,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663670971] [2020-09-25 12:24:41,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:24:41,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:41,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:42,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:42,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:42,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:46,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:46,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-09-25 12:24:46,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:24:46,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 12:24:46,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:46,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:46,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:24:46,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 12:24:46,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 12:24:46,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:24:47,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:24:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:47,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:47,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:47,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:24:47,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:24:47,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 12:24:47,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:47,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:47,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:24:47,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:24:47,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 12:24:47,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:24:47,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:24:47,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:47,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:47,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:47,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:47,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 12:24:47,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:24:47,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-09-25 12:24:47,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:47,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:47,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:24:47,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:24:47,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 12:24:47,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:24:47,897 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:24:47,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1663670971] [2020-09-25 12:24:47,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:24:47,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 12:24:47,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164077842] [2020-09-25 12:24:47,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 12:24:47,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:24:47,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 12:24:47,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:24:47,900 INFO L87 Difference]: Start difference. First operand 923 states and 1195 transitions. Second operand 11 states. [2020-09-25 12:24:51,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:24:51,751 INFO L93 Difference]: Finished difference Result 2096 states and 2819 transitions. [2020-09-25 12:24:51,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 12:24:51,756 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 188 [2020-09-25 12:24:51,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:24:51,765 INFO L225 Difference]: With dead ends: 2096 [2020-09-25 12:24:51,765 INFO L226 Difference]: Without dead ends: 898 [2020-09-25 12:24:51,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2020-09-25 12:24:51,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2020-09-25 12:24:51,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 721. [2020-09-25 12:24:51,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 721 states. [2020-09-25 12:24:51,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 843 transitions. [2020-09-25 12:24:51,814 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 843 transitions. Word has length 188 [2020-09-25 12:24:51,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:24:51,814 INFO L479 AbstractCegarLoop]: Abstraction has 721 states and 843 transitions. [2020-09-25 12:24:51,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 12:24:51,815 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 843 transitions. [2020-09-25 12:24:51,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-09-25 12:24:51,819 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:24:51,819 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:24:51,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:24:51,820 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:24:51,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:24:51,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1097724770, now seen corresponding path program 1 times [2020-09-25 12:24:51,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:24:51,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982075230] [2020-09-25 12:24:51,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:24:51,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:51,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:51,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:52,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:52,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:52,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:55,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:55,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:56,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:56,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-09-25 12:24:56,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:24:56,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 12:24:56,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:56,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:56,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:24:56,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 12:24:56,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-09-25 12:24:56,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:24:57,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:24:57,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:57,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:57,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:57,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:24:57,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:24:57,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 12:24:57,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:57,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:57,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:24:57,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:24:57,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 12:24:57,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:24:57,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:24:57,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:57,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:57,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:57,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:57,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 12:24:57,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:24:57,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-09-25 12:24:57,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:57,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:57,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:24:57,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:24:57,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 12:24:57,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:24:57,811 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:24:57,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982075230] [2020-09-25 12:24:57,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:24:57,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 12:24:57,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174838739] [2020-09-25 12:24:57,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 12:24:57,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:24:57,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 12:24:57,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:24:57,817 INFO L87 Difference]: Start difference. First operand 721 states and 843 transitions. Second operand 11 states. [2020-09-25 12:25:01,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:25:01,822 INFO L93 Difference]: Finished difference Result 1841 states and 2242 transitions. [2020-09-25 12:25:01,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 12:25:01,822 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 205 [2020-09-25 12:25:01,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:25:01,837 INFO L225 Difference]: With dead ends: 1841 [2020-09-25 12:25:01,837 INFO L226 Difference]: Without dead ends: 1142 [2020-09-25 12:25:01,841 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2020-09-25 12:25:01,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2020-09-25 12:25:01,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 1089. [2020-09-25 12:25:01,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1089 states. [2020-09-25 12:25:01,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 1227 transitions. [2020-09-25 12:25:01,908 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 1227 transitions. Word has length 205 [2020-09-25 12:25:01,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:25:01,910 INFO L479 AbstractCegarLoop]: Abstraction has 1089 states and 1227 transitions. [2020-09-25 12:25:01,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 12:25:01,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 1227 transitions. [2020-09-25 12:25:01,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-09-25 12:25:01,918 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:01,919 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:25:01,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:25:01,919 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:01,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:01,920 INFO L82 PathProgramCache]: Analyzing trace with hash 460056649, now seen corresponding path program 1 times [2020-09-25 12:25:01,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:01,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1427477802] [2020-09-25 12:25:01,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:01,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:02,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:02,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:02,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:02,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:03,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:03,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:06,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:06,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-09-25 12:25:06,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:25:06,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 12:25:06,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:06,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:06,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:25:06,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-09-25 12:25:06,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-25 12:25:06,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:25:07,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:25:07,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:07,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:07,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:07,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:25:07,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:07,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:25:07,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:07,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:07,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:25:07,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:07,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:25:07,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:25:07,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:25:07,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:07,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:07,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:07,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:25:07,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:07,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:25:07,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:07,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:07,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:25:07,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:07,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:25:07,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:25:07,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 12:25:07,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:07,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:07,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:07,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 12:25:07,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:07,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-25 12:25:07,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:07,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:07,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:25:07,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:07,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 12:25:07,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:07,573 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 12:25:07,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1427477802] [2020-09-25 12:25:07,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:25:07,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:25:07,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327384115] [2020-09-25 12:25:07,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:25:07,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:25:07,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:25:07,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:25:07,576 INFO L87 Difference]: Start difference. First operand 1089 states and 1227 transitions. Second operand 7 states. [2020-09-25 12:25:09,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:25:09,852 INFO L93 Difference]: Finished difference Result 1500 states and 1640 transitions. [2020-09-25 12:25:09,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 12:25:09,853 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 222 [2020-09-25 12:25:09,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:25:09,859 INFO L225 Difference]: With dead ends: 1500 [2020-09-25 12:25:09,859 INFO L226 Difference]: Without dead ends: 1086 [2020-09-25 12:25:09,861 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:25:09,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2020-09-25 12:25:09,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 1084. [2020-09-25 12:25:09,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1084 states. [2020-09-25 12:25:09,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 1220 transitions. [2020-09-25 12:25:09,891 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 1220 transitions. Word has length 222 [2020-09-25 12:25:09,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:25:09,892 INFO L479 AbstractCegarLoop]: Abstraction has 1084 states and 1220 transitions. [2020-09-25 12:25:09,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:25:09,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 1220 transitions. [2020-09-25 12:25:09,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-09-25 12:25:09,898 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:09,898 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:25:09,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:25:09,898 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:09,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:09,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1066593756, now seen corresponding path program 1 times [2020-09-25 12:25:09,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:09,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743436924] [2020-09-25 12:25:09,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:09,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:09,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:10,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:10,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:10,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:10,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking...