/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label23.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 19:23:46,831 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 19:23:46,834 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 19:23:46,863 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 19:23:46,863 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 19:23:46,864 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 19:23:46,868 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 19:23:46,876 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 19:23:46,879 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 19:23:46,880 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 19:23:46,881 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 19:23:46,884 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 19:23:46,885 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 19:23:46,886 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 19:23:46,890 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 19:23:46,893 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 19:23:46,894 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 19:23:46,897 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 19:23:46,898 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 19:23:46,902 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 19:23:46,904 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 19:23:46,905 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 19:23:46,909 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 19:23:46,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 19:23:46,914 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 19:23:46,915 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 19:23:46,915 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 19:23:46,923 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 19:23:46,924 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 19:23:46,928 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 19:23:46,928 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 19:23:46,929 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 19:23:46,930 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 19:23:46,931 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 19:23:46,936 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 19:23:46,936 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 19:23:46,937 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 19:23:46,937 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 19:23:46,937 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 19:23:46,941 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 19:23:46,942 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 19:23:46,943 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 19:23:46,969 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 19:23:46,969 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 19:23:46,970 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 19:23:46,971 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 19:23:46,971 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 19:23:46,971 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 19:23:46,971 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 19:23:46,972 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 19:23:46,972 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 19:23:46,972 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 19:23:46,972 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 19:23:46,972 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 19:23:46,973 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 19:23:46,973 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 19:23:46,973 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 19:23:46,973 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 19:23:46,973 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 19:23:46,974 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 19:23:46,974 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 19:23:46,974 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 19:23:46,974 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 19:23:46,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:23:46,975 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 19:23:46,975 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 19:23:46,975 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 19:23:46,975 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 19:23:46,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 19:23:46,976 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 19:23:46,976 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 19:23:46,976 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 19:23:47,277 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 19:23:47,290 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 19:23:47,294 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 19:23:47,295 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 19:23:47,296 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 19:23:47,297 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label23.c [2020-10-14 19:23:47,355 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed2babd81/54b0192bf10943929e7b8d6546bafb0e/FLAGe70d2de4c [2020-10-14 19:23:48,098 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 19:23:48,099 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label23.c [2020-10-14 19:23:48,129 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed2babd81/54b0192bf10943929e7b8d6546bafb0e/FLAGe70d2de4c [2020-10-14 19:23:48,231 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed2babd81/54b0192bf10943929e7b8d6546bafb0e [2020-10-14 19:23:48,241 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 19:23:48,243 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 19:23:48,244 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 19:23:48,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 19:23:48,248 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 19:23:48,249 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:23:48" (1/1) ... [2020-10-14 19:23:48,252 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@589fe6a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:48, skipping insertion in model container [2020-10-14 19:23:48,253 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:23:48" (1/1) ... [2020-10-14 19:23:48,261 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 19:23:48,417 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 19:23:50,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:23:50,335 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 19:23:51,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:23:51,086 INFO L208 MainTranslator]: Completed translation [2020-10-14 19:23:51,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:51 WrapperNode [2020-10-14 19:23:51,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 19:23:51,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 19:23:51,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 19:23:51,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 19:23:51,104 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:51" (1/1) ... [2020-10-14 19:23:51,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:51" (1/1) ... [2020-10-14 19:23:51,165 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:51" (1/1) ... [2020-10-14 19:23:51,166 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:51" (1/1) ... [2020-10-14 19:23:51,266 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:51" (1/1) ... [2020-10-14 19:23:51,303 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:51" (1/1) ... [2020-10-14 19:23:51,327 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:51" (1/1) ... [2020-10-14 19:23:51,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 19:23:51,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 19:23:51,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 19:23:51,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 19:23:51,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:51" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:23:51,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 19:23:51,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 19:23:51,451 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 19:23:51,451 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 19:23:51,451 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 19:23:51,451 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 19:23:51,451 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 19:23:51,451 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 19:23:51,452 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 19:23:51,452 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 19:23:51,452 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 19:23:51,452 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 19:23:51,452 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 19:23:51,452 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 19:23:51,452 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 19:23:51,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 19:23:51,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 19:23:55,658 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 19:23:55,658 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 19:23:55,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:23:55 BoogieIcfgContainer [2020-10-14 19:23:55,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 19:23:55,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 19:23:55,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 19:23:55,685 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 19:23:55,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:23:48" (1/3) ... [2020-10-14 19:23:55,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e265594 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:23:55, skipping insertion in model container [2020-10-14 19:23:55,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:51" (2/3) ... [2020-10-14 19:23:55,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e265594 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:23:55, skipping insertion in model container [2020-10-14 19:23:55,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:23:55" (3/3) ... [2020-10-14 19:23:55,689 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label23.c [2020-10-14 19:23:55,699 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 19:23:55,712 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 19:23:55,726 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 19:23:55,756 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 19:23:55,756 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 19:23:55,757 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 19:23:55,757 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 19:23:55,757 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 19:23:55,757 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 19:23:55,757 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 19:23:55,757 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 19:23:55,801 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-14 19:23:55,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 818 [2020-10-14 19:23:55,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:23:55,870 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:23:55,871 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:23:55,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:23:55,878 INFO L82 PathProgramCache]: Analyzing trace with hash -699559966, now seen corresponding path program 1 times [2020-10-14 19:23:55,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:23:55,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [655971774] [2020-10-14 19:23:55,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:23:56,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:23:56,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:23:57,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:24:01,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:24:01,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 831 [2020-10-14 19:24:01,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:24:01,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 19:24:01,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:24:01,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:24:01,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 19:24:01,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:24:01,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 825 [2020-10-14 19:24:01,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 19:24:02,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:24:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:24:02,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:24:02,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:24:02,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:24:02,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:24:02,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 19:24:02,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:24:02,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:24:02,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:24:02,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:24:02,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:24:02,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:24:04,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:24:04,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [655971774] [2020-10-14 19:24:04,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:24:04,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 19:24:04,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812407567] [2020-10-14 19:24:04,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 19:24:04,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:24:04,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 19:24:04,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 19:24:04,387 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 4 states. [2020-10-14 19:24:13,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:24:13,207 INFO L93 Difference]: Finished difference Result 2672 states and 5137 transitions. [2020-10-14 19:24:13,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:24:13,210 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 817 [2020-10-14 19:24:13,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:24:13,267 INFO L225 Difference]: With dead ends: 2672 [2020-10-14 19:24:13,267 INFO L226 Difference]: Without dead ends: 1702 [2020-10-14 19:24:13,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:24:13,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2020-10-14 19:24:13,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1689. [2020-10-14 19:24:13,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1689 states. [2020-10-14 19:24:13,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 2741 transitions. [2020-10-14 19:24:13,465 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 2741 transitions. Word has length 817 [2020-10-14 19:24:13,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:24:13,470 INFO L479 AbstractCegarLoop]: Abstraction has 1689 states and 2741 transitions. [2020-10-14 19:24:13,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 19:24:13,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 2741 transitions. [2020-10-14 19:24:13,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 833 [2020-10-14 19:24:13,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:24:13,503 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:24:13,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 19:24:13,504 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:24:13,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:24:13,505 INFO L82 PathProgramCache]: Analyzing trace with hash 483108713, now seen corresponding path program 1 times [2020-10-14 19:24:13,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:24:13,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710938426] [2020-10-14 19:24:13,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:24:13,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:24:13,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:24:14,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:24:17,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:24:18,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:24:18,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 848 [2020-10-14 19:24:18,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:24:18,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 19:24:18,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:24:18,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:24:18,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:24:18,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 19:24:18,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 822 [2020-10-14 19:24:18,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:24:19,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:24:19,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:24:19,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:24:19,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:24:19,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:24:19,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:24:19,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:24:19,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:24:19,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:24:19,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:24:19,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:24:19,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:24:19,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:24:19,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:24:19,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:24:19,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:24:19,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:24:19,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 19:24:19,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:24:19,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 19:24:19,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:24:19,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:24:19,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:24:19,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:24:19,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 19:24:19,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:24:20,516 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:24:20,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [710938426] [2020-10-14 19:24:20,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:24:20,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 19:24:20,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622134666] [2020-10-14 19:24:20,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 19:24:20,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:24:20,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 19:24:20,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:24:20,522 INFO L87 Difference]: Start difference. First operand 1689 states and 2741 transitions. Second operand 6 states. [2020-10-14 19:24:32,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:24:32,193 INFO L93 Difference]: Finished difference Result 4230 states and 7123 transitions. [2020-10-14 19:24:32,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 19:24:32,194 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 832 [2020-10-14 19:24:32,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:24:32,212 INFO L225 Difference]: With dead ends: 4230 [2020-10-14 19:24:32,213 INFO L226 Difference]: Without dead ends: 2547 [2020-10-14 19:24:32,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:24:32,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2547 states. [2020-10-14 19:24:32,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2547 to 2543. [2020-10-14 19:24:32,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2543 states. [2020-10-14 19:24:32,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2543 states to 2543 states and 3864 transitions. [2020-10-14 19:24:32,293 INFO L78 Accepts]: Start accepts. Automaton has 2543 states and 3864 transitions. Word has length 832 [2020-10-14 19:24:32,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:24:32,295 INFO L479 AbstractCegarLoop]: Abstraction has 2543 states and 3864 transitions. [2020-10-14 19:24:32,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 19:24:32,296 INFO L276 IsEmpty]: Start isEmpty. Operand 2543 states and 3864 transitions. [2020-10-14 19:24:32,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 891 [2020-10-14 19:24:32,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:24:32,315 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:24:32,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 19:24:32,315 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:24:32,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:24:32,316 INFO L82 PathProgramCache]: Analyzing trace with hash 2036082398, now seen corresponding path program 1 times [2020-10-14 19:24:32,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:24:32,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005548304] [2020-10-14 19:24:32,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:24:32,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:24:32,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:24:32,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:24:35,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:24:37,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:24:37,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:24:37,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 908 [2020-10-14 19:24:37,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:24:37,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 19:24:37,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:24:37,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:24:37,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:24:37,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 19:24:37,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 822 [2020-10-14 19:24:37,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:24:37,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:24:37,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:24:37,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:24:37,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:24:37,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:24:37,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:24:37,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:24:37,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:24:37,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:24:37,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:24:37,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:24:37,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:24:37,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:24:37,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:24:37,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:24:37,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:24:37,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:24:37,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 19:24:37,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:24:37,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:24:37,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:24:37,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:24:37,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:24:37,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:24:37,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:24:37,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:24:37,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 19:24:38,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:24:38,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:24:38,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:24:38,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 19:24:38,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:24:38,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 19:24:38,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:24:38,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:24:38,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:24:38,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:24:38,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 19:24:38,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:24:39,358 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 68 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 19:24:39,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005548304] [2020-10-14 19:24:39,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:24:39,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 19:24:39,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486871810] [2020-10-14 19:24:39,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 19:24:39,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:24:39,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 19:24:39,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:24:39,366 INFO L87 Difference]: Start difference. First operand 2543 states and 3864 transitions. Second operand 6 states. [2020-10-14 19:24:54,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:24:54,102 INFO L93 Difference]: Finished difference Result 10155 states and 15721 transitions. [2020-10-14 19:24:54,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 19:24:54,103 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 890 [2020-10-14 19:24:54,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:24:54,148 INFO L225 Difference]: With dead ends: 10155 [2020-10-14 19:24:54,149 INFO L226 Difference]: Without dead ends: 7618 [2020-10-14 19:24:54,158 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:24:54,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7618 states. [2020-10-14 19:24:54,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7618 to 7610. [2020-10-14 19:24:54,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7610 states. [2020-10-14 19:24:54,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7610 states to 7610 states and 10592 transitions. [2020-10-14 19:24:54,402 INFO L78 Accepts]: Start accepts. Automaton has 7610 states and 10592 transitions. Word has length 890 [2020-10-14 19:24:54,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:24:54,404 INFO L479 AbstractCegarLoop]: Abstraction has 7610 states and 10592 transitions. [2020-10-14 19:24:54,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 19:24:54,404 INFO L276 IsEmpty]: Start isEmpty. Operand 7610 states and 10592 transitions. [2020-10-14 19:24:54,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 941 [2020-10-14 19:24:54,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:24:54,442 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:24:54,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 19:24:54,442 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:24:54,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:24:54,443 INFO L82 PathProgramCache]: Analyzing trace with hash -455074878, now seen corresponding path program 1 times [2020-10-14 19:24:54,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:24:54,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845049180] [2020-10-14 19:24:54,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:24:54,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:24:54,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:24:54,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:24:57,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:24:58,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:24:59,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:24:59,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 958 [2020-10-14 19:24:59,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:24:59,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5090 [2020-10-14 19:24:59,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:24:59,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:24:59,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:24:59,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 19:24:59,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 822 [2020-10-14 19:24:59,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:24:59,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:24:59,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:24:59,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:24:59,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:24:59,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:24:59,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:24:59,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:24:59,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:24:59,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:24:59,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:24:59,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:24:59,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:24:59,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:24:59,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:24:59,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:24:59,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:24:59,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:24:59,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 19:24:59,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:24:59,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:24:59,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:24:59,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:24:59,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:24:59,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:24:59,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:24:59,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:24:59,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 19:24:59,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:24:59,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:00,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:25:00,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 19:25:00,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:25:00,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 19:25:00,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:25:00,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:25:00,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:25:00,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:25:00,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 19:25:00,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:25:00,828 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 118 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 19:25:00,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845049180] [2020-10-14 19:25:00,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:25:00,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 19:25:00,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680189416] [2020-10-14 19:25:00,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 19:25:00,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:25:00,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 19:25:00,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:25:00,832 INFO L87 Difference]: Start difference. First operand 7610 states and 10592 transitions. Second operand 6 states. [2020-10-14 19:25:13,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:25:13,838 INFO L93 Difference]: Finished difference Result 30405 states and 43452 transitions. [2020-10-14 19:25:13,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 19:25:13,840 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 940 [2020-10-14 19:25:13,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:25:13,941 INFO L225 Difference]: With dead ends: 30405 [2020-10-14 19:25:13,941 INFO L226 Difference]: Without dead ends: 22801 [2020-10-14 19:25:13,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:25:13,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22801 states. [2020-10-14 19:25:14,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22801 to 22793. [2020-10-14 19:25:14,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22793 states. [2020-10-14 19:25:14,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22793 states to 22793 states and 30160 transitions. [2020-10-14 19:25:14,486 INFO L78 Accepts]: Start accepts. Automaton has 22793 states and 30160 transitions. Word has length 940 [2020-10-14 19:25:14,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:25:14,488 INFO L479 AbstractCegarLoop]: Abstraction has 22793 states and 30160 transitions. [2020-10-14 19:25:14,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 19:25:14,488 INFO L276 IsEmpty]: Start isEmpty. Operand 22793 states and 30160 transitions. [2020-10-14 19:25:14,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 961 [2020-10-14 19:25:14,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:25:14,572 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:25:14,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 19:25:14,573 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:25:14,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:25:14,574 INFO L82 PathProgramCache]: Analyzing trace with hash -903130389, now seen corresponding path program 1 times [2020-10-14 19:25:14,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:25:14,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358611801] [2020-10-14 19:25:14,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:25:14,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:25:14,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:14,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:14,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:19,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:19,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:25:19,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 980 [2020-10-14 19:25:19,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:25:19,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-14 19:25:19,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:25:19,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:25:19,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:25:19,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:25:19,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-14 19:25:19,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:25:19,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:25:19,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:25:19,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:19,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:25:19,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:25:19,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:25:19,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:25:19,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:25:19,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:25:19,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:25:19,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:25:19,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:25:19,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:25:19,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:25:19,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:25:19,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:19,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:19,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:25:19,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 19:25:19,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:25:19,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 19:25:19,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:25:19,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:25:19,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:25:19,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:25:19,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 19:25:19,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:25:19,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 19:25:20,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:25:20,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:20,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:20,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:25:20,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 19:25:20,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:25:20,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-14 19:25:20,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:25:20,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:25:20,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:25:20,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:25:20,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 19:25:20,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:25:20,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-14 19:25:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:25:20,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:20,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:25:20,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 19:25:20,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:25:20,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 19:25:20,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:25:20,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:25:20,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:25:20,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:25:20,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 19:25:20,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:25:20,719 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 149 proven. 12 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-14 19:25:20,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1358611801] [2020-10-14 19:25:20,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:25:20,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:25:20,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523949463] [2020-10-14 19:25:20,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:25:20,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:25:20,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:25:20,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:25:20,723 INFO L87 Difference]: Start difference. First operand 22793 states and 30160 transitions. Second operand 7 states. [2020-10-14 19:25:31,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:25:31,649 INFO L93 Difference]: Finished difference Result 67611 states and 91573 transitions. [2020-10-14 19:25:31,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 19:25:31,650 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 960 [2020-10-14 19:25:31,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:25:31,817 INFO L225 Difference]: With dead ends: 67611 [2020-10-14 19:25:31,817 INFO L226 Difference]: Without dead ends: 44824 [2020-10-14 19:25:31,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:25:31,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44824 states. [2020-10-14 19:25:32,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44824 to 38076. [2020-10-14 19:25:32,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38076 states. [2020-10-14 19:25:32,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38076 states to 38076 states and 48930 transitions. [2020-10-14 19:25:32,770 INFO L78 Accepts]: Start accepts. Automaton has 38076 states and 48930 transitions. Word has length 960 [2020-10-14 19:25:32,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:25:32,771 INFO L479 AbstractCegarLoop]: Abstraction has 38076 states and 48930 transitions. [2020-10-14 19:25:32,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:25:32,771 INFO L276 IsEmpty]: Start isEmpty. Operand 38076 states and 48930 transitions. [2020-10-14 19:25:32,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1044 [2020-10-14 19:25:32,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:25:32,883 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:25:32,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 19:25:32,883 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:25:32,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:25:32,884 INFO L82 PathProgramCache]: Analyzing trace with hash 815419625, now seen corresponding path program 1 times [2020-10-14 19:25:32,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:25:32,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1288277970] [2020-10-14 19:25:32,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:25:32,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:25:32,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:33,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:33,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:35,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:38,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:25:38,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1063 [2020-10-14 19:25:38,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:25:38,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-14 19:25:38,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:25:38,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:25:38,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:25:38,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-14 19:25:38,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-14 19:25:38,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:25:38,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:25:38,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:25:38,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:38,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:25:38,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:25:38,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:25:38,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:25:38,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:25:38,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:25:38,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:25:38,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:25:38,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:25:38,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:25:38,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:25:38,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:25:38,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:38,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:25:38,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 19:25:38,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:25:38,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 19:25:38,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:25:38,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:25:38,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:25:38,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:25:38,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 19:25:38,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:25:38,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 19:25:38,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:25:38,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:38,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:25:38,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-14 19:25:38,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:25:38,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-14 19:25:38,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:25:38,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:25:38,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:25:38,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:25:38,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-14 19:25:38,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:25:38,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-10-14 19:25:38,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:25:38,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:38,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:25:38,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 19:25:38,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:25:38,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:25:38,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:25:38,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:25:38,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:25:38,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 19:25:38,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:25:38,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:25:39,160 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 268 proven. 19 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-14 19:25:39,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1288277970] [2020-10-14 19:25:39,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:25:39,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:25:39,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885333469] [2020-10-14 19:25:39,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:25:39,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:25:39,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:25:39,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:25:39,163 INFO L87 Difference]: Start difference. First operand 38076 states and 48930 transitions. Second operand 8 states. [2020-10-14 19:26:00,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:26:00,152 INFO L93 Difference]: Finished difference Result 95685 states and 123790 transitions. [2020-10-14 19:26:00,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 19:26:00,154 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1043 [2020-10-14 19:26:00,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:26:00,313 INFO L225 Difference]: With dead ends: 95685 [2020-10-14 19:26:00,313 INFO L226 Difference]: Without dead ends: 57615 [2020-10-14 19:26:00,380 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 19:26:00,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57615 states. [2020-10-14 19:26:01,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57615 to 51694. [2020-10-14 19:26:01,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51694 states. [2020-10-14 19:26:01,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51694 states to 51694 states and 62068 transitions. [2020-10-14 19:26:01,288 INFO L78 Accepts]: Start accepts. Automaton has 51694 states and 62068 transitions. Word has length 1043 [2020-10-14 19:26:01,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:26:01,289 INFO L479 AbstractCegarLoop]: Abstraction has 51694 states and 62068 transitions. [2020-10-14 19:26:01,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:26:01,290 INFO L276 IsEmpty]: Start isEmpty. Operand 51694 states and 62068 transitions. [2020-10-14 19:26:01,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1226 [2020-10-14 19:26:01,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:26:01,396 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:26:01,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 19:26:01,397 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:26:01,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:26:01,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1466754160, now seen corresponding path program 1 times [2020-10-14 19:26:01,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:26:01,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205003412] [2020-10-14 19:26:01,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:26:01,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:26:01,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:01,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:01,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:02,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:06,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:26:06,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1249 [2020-10-14 19:26:06,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:26:06,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5126 [2020-10-14 19:26:06,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:26:06,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:26:06,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:26:06,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-14 19:26:06,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 278 [2020-10-14 19:26:06,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:26:06,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:26:06,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:26:06,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:06,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:26:06,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:26:06,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:26:06,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:26:06,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:26:06,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:26:06,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:26:06,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:26:06,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:26:06,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:26:06,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:26:06,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:26:06,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:06,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:26:06,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 19:26:06,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:26:06,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 19:26:06,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:26:06,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:26:06,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:26:06,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:26:06,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:26:06,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:26:06,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 19:26:06,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:26:06,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:06,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:26:06,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 19:26:06,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:26:06,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 19:26:06,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:26:06,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:26:06,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:26:06,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:26:06,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 19:26:06,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:26:06,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-14 19:26:06,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:26:06,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:07,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:26:07,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-14 19:26:07,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:26:07,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 322 [2020-10-14 19:26:07,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:26:07,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:26:07,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:26:07,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:26:07,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 279 [2020-10-14 19:26:07,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:26:07,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 19:26:07,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:26:07,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:07,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:26:07,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 19:26:07,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:26:07,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 19:26:07,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:26:07,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:26:07,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:26:07,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:26:07,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 19:26:07,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:26:07,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2020-10-14 19:26:07,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:26:07,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:07,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:26:07,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 19:26:07,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:26:07,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:26:07,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:26:07,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:26:07,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:26:07,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 19:26:07,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:26:07,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:26:08,163 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 512 proven. 19 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-14 19:26:08,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205003412] [2020-10-14 19:26:08,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:26:08,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:26:08,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910092679] [2020-10-14 19:26:08,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:26:08,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:26:08,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:26:08,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:26:08,166 INFO L87 Difference]: Start difference. First operand 51694 states and 62068 transitions. Second operand 8 states. [2020-10-14 19:26:22,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:26:22,700 INFO L93 Difference]: Finished difference Result 105545 states and 127732 transitions. [2020-10-14 19:26:22,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 19:26:22,700 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1225 [2020-10-14 19:26:22,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:26:22,867 INFO L225 Difference]: With dead ends: 105545 [2020-10-14 19:26:22,868 INFO L226 Difference]: Without dead ends: 53861 [2020-10-14 19:26:22,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 19:26:22,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53861 states. [2020-10-14 19:26:23,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53861 to 52923. [2020-10-14 19:26:23,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52923 states. [2020-10-14 19:26:23,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52923 states to 52923 states and 61419 transitions. [2020-10-14 19:26:23,747 INFO L78 Accepts]: Start accepts. Automaton has 52923 states and 61419 transitions. Word has length 1225 [2020-10-14 19:26:23,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:26:23,748 INFO L479 AbstractCegarLoop]: Abstraction has 52923 states and 61419 transitions. [2020-10-14 19:26:23,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:26:23,748 INFO L276 IsEmpty]: Start isEmpty. Operand 52923 states and 61419 transitions. [2020-10-14 19:26:23,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1298 [2020-10-14 19:26:23,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:26:23,859 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:26:23,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 19:26:23,860 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:26:23,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:26:23,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1492090967, now seen corresponding path program 1 times [2020-10-14 19:26:23,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:26:23,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [630523527] [2020-10-14 19:26:23,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:26:23,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:26:23,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:24,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:24,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:24,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:29,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:26:29,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1321 [2020-10-14 19:26:29,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:26:29,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-14 19:26:29,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:26:29,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:26:29,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:26:29,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-14 19:26:29,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-14 19:26:29,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:26:29,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:26:29,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:26:29,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:29,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:26:29,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:26:29,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:26:29,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:26:29,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:26:29,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:26:29,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:26:29,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:26:29,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:26:29,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:26:29,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:26:29,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:26:29,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:29,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:26:29,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 19:26:29,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:26:29,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 19:26:29,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:26:29,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:26:29,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:26:29,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:26:29,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:26:29,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:26:29,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 19:26:29,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:26:29,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:29,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:26:29,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 19:26:29,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:26:29,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 19:26:29,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:26:29,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:26:29,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:26:29,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:26:29,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:26:29,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:26:29,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-14 19:26:29,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:26:29,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:29,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:26:29,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 19:26:29,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:26:29,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 19:26:29,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:26:29,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:26:29,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:26:29,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:26:29,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 19:26:29,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:26:29,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-10-14 19:26:29,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:26:29,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:29,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:26:29,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-14 19:26:29,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:26:29,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-14 19:26:29,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:26:29,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:26:29,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:26:29,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:26:29,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-14 19:26:29,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:26:29,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2020-10-14 19:26:29,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:26:29,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:29,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:26:29,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 19:26:29,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:26:29,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:26:29,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:26:29,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:26:29,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:26:29,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 19:26:29,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:26:29,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:26:30,730 INFO L134 CoverageAnalysis]: Checked inductivity of 945 backedges. 723 proven. 19 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2020-10-14 19:26:30,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [630523527] [2020-10-14 19:26:30,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:26:30,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:26:30,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815109446] [2020-10-14 19:26:30,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:26:30,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:26:30,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:26:30,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:26:30,732 INFO L87 Difference]: Start difference. First operand 52923 states and 61419 transitions. Second operand 7 states. [2020-10-14 19:26:46,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:26:46,246 INFO L93 Difference]: Finished difference Result 124817 states and 147775 transitions. [2020-10-14 19:26:46,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:26:46,247 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1297 [2020-10-14 19:26:46,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:26:46,497 INFO L225 Difference]: With dead ends: 124817 [2020-10-14 19:26:46,497 INFO L226 Difference]: Without dead ends: 71904 [2020-10-14 19:26:46,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:26:46,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71904 states. [2020-10-14 19:26:47,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71904 to 71855. [2020-10-14 19:26:47,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71855 states. [2020-10-14 19:26:47,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71855 states to 71855 states and 83621 transitions. [2020-10-14 19:26:47,755 INFO L78 Accepts]: Start accepts. Automaton has 71855 states and 83621 transitions. Word has length 1297 [2020-10-14 19:26:47,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:26:47,756 INFO L479 AbstractCegarLoop]: Abstraction has 71855 states and 83621 transitions. [2020-10-14 19:26:47,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:26:47,756 INFO L276 IsEmpty]: Start isEmpty. Operand 71855 states and 83621 transitions. [2020-10-14 19:26:47,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1304 [2020-10-14 19:26:47,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:26:47,911 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:26:47,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 19:26:47,912 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:26:47,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:26:47,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1552177164, now seen corresponding path program 1 times [2020-10-14 19:26:47,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:26:47,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424189258] [2020-10-14 19:26:47,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:26:48,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:26:48,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:48,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:48,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:48,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:53,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:26:53,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1327 [2020-10-14 19:26:53,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:26:53,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5207 [2020-10-14 19:26:53,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:26:53,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:26:53,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:26:53,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 202 [2020-10-14 19:26:53,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 278 [2020-10-14 19:26:53,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:26:53,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:26:53,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:26:53,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:53,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:26:53,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:26:53,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:26:53,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:26:53,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:26:53,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:26:53,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:26:53,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:26:53,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:26:53,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:26:53,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:26:53,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:26:53,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:53,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:26:53,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 19:26:53,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:26:53,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 19:26:53,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:26:53,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:26:53,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:26:53,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:26:53,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:26:53,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:26:53,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 19:26:53,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:26:53,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:53,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:26:53,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 19:26:53,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:26:53,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-14 19:26:53,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:26:53,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:26:53,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:26:53,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:26:53,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-14 19:26:53,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:26:53,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-14 19:26:53,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:26:54,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:54,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:26:54,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-14 19:26:54,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:26:54,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 667 [2020-10-14 19:26:54,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:26:54,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:26:54,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:26:54,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:26:54,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 279 [2020-10-14 19:26:54,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:26:54,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 19:26:54,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:26:54,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:54,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:26:54,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 19:26:54,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:26:54,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-14 19:26:54,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:26:54,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:26:54,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:26:54,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:26:54,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 19:26:54,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:26:55,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-10-14 19:26:55,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:26:55,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:55,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:26:55,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 19:26:55,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:26:55,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 19:26:55,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:26:55,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:26:55,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:26:55,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 19:26:55,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:26:55,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:26:57,088 INFO L134 CoverageAnalysis]: Checked inductivity of 771 backedges. 668 proven. 19 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-14 19:26:57,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424189258] [2020-10-14 19:26:57,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:26:57,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:26:57,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924049428] [2020-10-14 19:26:57,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:26:57,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:26:57,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:26:57,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:26:57,105 INFO L87 Difference]: Start difference. First operand 71855 states and 83621 transitions. Second operand 7 states. [2020-10-14 19:27:09,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:27:09,345 INFO L93 Difference]: Finished difference Result 145834 states and 169928 transitions. [2020-10-14 19:27:09,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:27:09,346 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1303 [2020-10-14 19:27:09,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:27:09,487 INFO L225 Difference]: With dead ends: 145834 [2020-10-14 19:27:09,487 INFO L226 Difference]: Without dead ends: 72287 [2020-10-14 19:27:09,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:27:09,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72287 states. [2020-10-14 19:27:10,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72287 to 71342. [2020-10-14 19:27:10,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71342 states. [2020-10-14 19:27:10,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71342 states to 71342 states and 79212 transitions. [2020-10-14 19:27:10,291 INFO L78 Accepts]: Start accepts. Automaton has 71342 states and 79212 transitions. Word has length 1303 [2020-10-14 19:27:10,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:27:10,292 INFO L479 AbstractCegarLoop]: Abstraction has 71342 states and 79212 transitions. [2020-10-14 19:27:10,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:27:10,292 INFO L276 IsEmpty]: Start isEmpty. Operand 71342 states and 79212 transitions. [2020-10-14 19:27:10,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1351 [2020-10-14 19:27:10,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:27:10,375 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:27:10,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 19:27:10,375 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:27:10,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:27:10,376 INFO L82 PathProgramCache]: Analyzing trace with hash 655350123, now seen corresponding path program 1 times [2020-10-14 19:27:10,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:27:10,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024472842] [2020-10-14 19:27:10,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:27:10,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:27:10,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:10,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:10,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:10,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:12,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:14,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:15,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:27:15,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1374 [2020-10-14 19:27:15,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 19:27:15,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-10-14 19:27:15,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:27:15,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:27:15,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:27:15,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 312 [2020-10-14 19:27:15,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-14 19:27:15,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:27:15,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:27:15,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:27:15,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:15,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:27:15,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:27:15,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:27:15,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:27:15,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:27:15,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:27:15,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:27:15,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:27:15,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:27:15,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:27:15,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:27:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:27:15,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:15,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:27:15,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 19:27:15,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:27:15,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 19:27:15,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:27:15,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:27:15,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:27:15,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:27:15,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:27:15,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:27:15,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 19:27:15,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:27:15,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:15,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:27:15,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 19:27:15,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:27:15,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 19:27:15,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:27:15,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:27:15,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:27:15,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:27:15,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:27:15,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:27:15,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-14 19:27:15,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:27:15,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:15,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:27:15,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-14 19:27:15,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:27:15,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-14 19:27:15,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:27:15,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:27:15,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:27:15,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:27:15,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-14 19:27:15,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:27:16,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2020-10-14 19:27:16,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:27:16,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:16,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:27:16,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-14 19:27:16,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:27:16,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-14 19:27:16,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:27:16,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:27:16,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:27:16,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:27:16,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-14 19:27:16,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:27:16,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-14 19:27:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:27:16,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:16,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:27:16,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 19:27:16,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:27:16,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:27:16,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:27:16,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:27:16,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:27:16,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 19:27:16,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:27:16,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0