/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=BIGGEST --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/Problem12_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 13:29:17,251 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 13:29:17,253 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 13:29:17,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 13:29:17,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 13:29:17,306 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 13:29:17,307 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 13:29:17,310 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 13:29:17,313 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 13:29:17,315 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 13:29:17,316 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 13:29:17,318 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 13:29:17,318 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 13:29:17,321 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 13:29:17,323 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 13:29:17,324 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 13:29:17,326 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 13:29:17,327 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 13:29:17,328 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 13:29:17,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 13:29:17,337 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 13:29:17,338 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 13:29:17,340 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 13:29:17,340 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 13:29:17,345 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 13:29:17,345 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 13:29:17,346 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 13:29:17,348 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 13:29:17,349 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 13:29:17,351 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 13:29:17,351 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 13:29:17,351 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 13:29:17,352 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 13:29:17,353 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 13:29:17,354 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 13:29:17,354 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 13:29:17,355 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 13:29:17,355 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 13:29:17,355 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 13:29:17,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 13:29:17,357 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 13:29:17,358 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 [2020-10-12 13:29:17,403 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 13:29:17,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 13:29:17,406 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 13:29:17,406 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 13:29:17,406 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 13:29:17,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 13:29:17,407 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 13:29:17,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 13:29:17,407 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 13:29:17,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 13:29:17,408 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 13:29:17,408 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 13:29:17,409 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 13:29:17,409 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 13:29:17,409 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 13:29:17,410 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 13:29:17,410 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 13:29:17,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 13:29:17,410 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 13:29:17,410 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 13:29:17,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 13:29:17,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 13:29:17,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 13:29:17,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 13:29:17,411 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 13:29:17,412 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 13:29:17,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 13:29:17,412 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 13:29:17,412 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 13:29:17,412 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 13:29:17,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 13:29:17,721 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 13:29:17,725 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 13:29:17,727 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 13:29:17,727 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 13:29:17,728 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label45.c [2020-10-12 13:29:17,806 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/084e2ba03/5d1fbfc9bad14215b96907178a274138/FLAGe060a9994 [2020-10-12 13:29:18,623 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 13:29:18,624 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label45.c [2020-10-12 13:29:18,668 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/084e2ba03/5d1fbfc9bad14215b96907178a274138/FLAGe060a9994 [2020-10-12 13:29:19,156 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/084e2ba03/5d1fbfc9bad14215b96907178a274138 [2020-10-12 13:29:19,167 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 13:29:19,170 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 13:29:19,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 13:29:19,174 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 13:29:19,178 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 13:29:19,179 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:29:19" (1/1) ... [2020-10-12 13:29:19,182 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7405de93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:29:19, skipping insertion in model container [2020-10-12 13:29:19,182 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:29:19" (1/1) ... [2020-10-12 13:29:19,188 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 13:29:19,346 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 13:29:20,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:29:20,903 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 13:29:21,611 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:29:21,642 INFO L208 MainTranslator]: Completed translation [2020-10-12 13:29:21,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:29:21 WrapperNode [2020-10-12 13:29:21,644 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 13:29:21,645 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 13:29:21,645 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 13:29:21,645 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 13:29:21,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:29:21" (1/1) ... [2020-10-12 13:29:21,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:29:21" (1/1) ... [2020-10-12 13:29:21,722 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:29:21" (1/1) ... [2020-10-12 13:29:21,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:29:21" (1/1) ... [2020-10-12 13:29:21,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:29:21" (1/1) ... [2020-10-12 13:29:21,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:29:21" (1/1) ... [2020-10-12 13:29:21,862 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:29:21" (1/1) ... [2020-10-12 13:29:21,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 13:29:21,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 13:29:21,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 13:29:21,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 13:29:21,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:29:21" (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 [2020-10-12 13:29:21,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 13:29:21,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 13:29:21,969 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 13:29:21,969 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 13:29:21,969 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 13:29:21,970 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 13:29:21,970 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 13:29:21,971 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 13:29:21,972 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 13:29:21,972 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 13:29:21,972 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 13:29:21,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 13:29:21,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 13:29:21,973 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 13:29:21,973 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 13:29:21,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 13:29:21,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 13:29:26,891 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 13:29:26,891 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 13:29:26,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:29:26 BoogieIcfgContainer [2020-10-12 13:29:26,903 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 13:29:26,905 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 13:29:26,905 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 13:29:26,909 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 13:29:26,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 01:29:19" (1/3) ... [2020-10-12 13:29:26,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b8c8d4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:29:26, skipping insertion in model container [2020-10-12 13:29:26,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:29:21" (2/3) ... [2020-10-12 13:29:26,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b8c8d4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:29:26, skipping insertion in model container [2020-10-12 13:29:26,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:29:26" (3/3) ... [2020-10-12 13:29:26,913 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label45.c [2020-10-12 13:29:26,924 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 13:29:26,934 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 13:29:26,949 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 13:29:26,979 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 13:29:26,979 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 13:29:26,979 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 13:29:26,979 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 13:29:26,980 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 13:29:26,980 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 13:29:26,980 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 13:29:26,980 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 13:29:27,018 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-12 13:29:27,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-12 13:29:27,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:29:27,029 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:29:27,030 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:29:27,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:29:27,037 INFO L82 PathProgramCache]: Analyzing trace with hash -157974758, now seen corresponding path program 1 times [2020-10-12 13:29:27,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:29:27,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1968015203] [2020-10-12 13:29:27,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:29:27,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:27,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:27,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:27,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-12 13:29:27,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:29:27,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 451 [2020-10-12 13:29:27,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:27,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:29:27,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:29:27,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 13:29:27,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 13:29:27,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:29:27,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:27,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:27,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:27,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:29:27,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:29:27,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 13:29:27,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:27,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:29:27,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:29:27,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:29:27,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:29:27,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:29:27,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1968015203] [2020-10-12 13:29:27,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:29:27,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 13:29:27,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098167287] [2020-10-12 13:29:27,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 13:29:27,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:29:27,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 13:29:27,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 13:29:27,884 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-12 13:29:36,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:29:36,484 INFO L93 Difference]: Finished difference Result 2487 states and 4748 transitions. [2020-10-12 13:29:36,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:29:36,486 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-10-12 13:29:36,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:29:36,527 INFO L225 Difference]: With dead ends: 2487 [2020-10-12 13:29:36,527 INFO L226 Difference]: Without dead ends: 1568 [2020-10-12 13:29:36,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:29:36,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-12 13:29:36,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1564. [2020-10-12 13:29:36,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2020-10-12 13:29:36,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 2484 transitions. [2020-10-12 13:29:36,694 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 2484 transitions. Word has length 57 [2020-10-12 13:29:36,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:29:36,695 INFO L479 AbstractCegarLoop]: Abstraction has 1564 states and 2484 transitions. [2020-10-12 13:29:36,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 13:29:36,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 2484 transitions. [2020-10-12 13:29:36,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-12 13:29:36,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:29:36,712 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:29:36,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 13:29:36,713 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:29:36,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:29:36,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1421403525, now seen corresponding path program 1 times [2020-10-12 13:29:36,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:29:36,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1664246126] [2020-10-12 13:29:36,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:29:36,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:36,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:37,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:38,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:38,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 13:29:38,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:29:38,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1246 [2020-10-12 13:29:38,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:38,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:29:38,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:29:38,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-12 13:29:38,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 13:29:38,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:29:38,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:38,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:38,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:38,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:29:38,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:29:38,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:29:38,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:38,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:29:38,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:29:38,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:29:38,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:29:38,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:29:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:38,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:38,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:38,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 13:29:38,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:29:38,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-12 13:29:38,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:38,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:29:38,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:29:38,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 13:29:38,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-12 13:29:38,497 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:29:38,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1664246126] [2020-10-12 13:29:38,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:29:38,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:29:38,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270056195] [2020-10-12 13:29:38,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:29:38,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:29:38,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:29:38,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:29:38,501 INFO L87 Difference]: Start difference. First operand 1564 states and 2484 transitions. Second operand 7 states. [2020-10-12 13:29:49,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:29:49,475 INFO L93 Difference]: Finished difference Result 4760 states and 7582 transitions. [2020-10-12 13:29:49,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:29:49,476 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 136 [2020-10-12 13:29:49,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:29:49,501 INFO L225 Difference]: With dead ends: 4760 [2020-10-12 13:29:49,501 INFO L226 Difference]: Without dead ends: 3202 [2020-10-12 13:29:49,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:29:49,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3202 states. [2020-10-12 13:29:49,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3202 to 3143. [2020-10-12 13:29:49,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3143 states. [2020-10-12 13:29:49,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3143 states to 3143 states and 4559 transitions. [2020-10-12 13:29:49,655 INFO L78 Accepts]: Start accepts. Automaton has 3143 states and 4559 transitions. Word has length 136 [2020-10-12 13:29:49,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:29:49,658 INFO L479 AbstractCegarLoop]: Abstraction has 3143 states and 4559 transitions. [2020-10-12 13:29:49,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:29:49,658 INFO L276 IsEmpty]: Start isEmpty. Operand 3143 states and 4559 transitions. [2020-10-12 13:29:49,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-12 13:29:49,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:29:49,664 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:29:49,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 13:29:49,664 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:29:49,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:29:49,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1978648782, now seen corresponding path program 1 times [2020-10-12 13:29:49,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:29:49,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123929603] [2020-10-12 13:29:49,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:29:49,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:49,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:49,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:50,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:52,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:52,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-12 13:29:52,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:29:52,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2292 [2020-10-12 13:29:52,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:52,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:29:52,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:29:52,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-12 13:29:52,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:29:52,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:29:52,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:52,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:52,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:52,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:29:52,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:29:52,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:29:52,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:52,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:29:52,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:29:52,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:29:52,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:29:52,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:29:52,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:52,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:52,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:52,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:52,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 13:29:52,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:29:52,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-12 13:29:52,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:52,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:29:52,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:29:52,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-12 13:29:52,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:29:52,672 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 13:29:52,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123929603] [2020-10-12 13:29:52,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:29:52,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:29:52,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896452993] [2020-10-12 13:29:52,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:29:52,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:29:52,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:29:52,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:29:52,675 INFO L87 Difference]: Start difference. First operand 3143 states and 4559 transitions. Second operand 7 states. [2020-10-12 13:30:07,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:30:07,004 INFO L93 Difference]: Finished difference Result 12646 states and 18896 transitions. [2020-10-12 13:30:07,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:30:07,006 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 165 [2020-10-12 13:30:07,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:30:07,070 INFO L225 Difference]: With dead ends: 12646 [2020-10-12 13:30:07,070 INFO L226 Difference]: Without dead ends: 9509 [2020-10-12 13:30:07,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:30:07,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9509 states. [2020-10-12 13:30:07,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9509 to 9489. [2020-10-12 13:30:07,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9489 states. [2020-10-12 13:30:07,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9489 states to 9489 states and 12938 transitions. [2020-10-12 13:30:07,443 INFO L78 Accepts]: Start accepts. Automaton has 9489 states and 12938 transitions. Word has length 165 [2020-10-12 13:30:07,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:30:07,445 INFO L479 AbstractCegarLoop]: Abstraction has 9489 states and 12938 transitions. [2020-10-12 13:30:07,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:30:07,445 INFO L276 IsEmpty]: Start isEmpty. Operand 9489 states and 12938 transitions. [2020-10-12 13:30:07,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-12 13:30:07,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:30:07,449 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:30:07,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 13:30:07,451 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:30:07,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:30:07,456 INFO L82 PathProgramCache]: Analyzing trace with hash 773603615, now seen corresponding path program 1 times [2020-10-12 13:30:07,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:30:07,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544483488] [2020-10-12 13:30:07,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:30:07,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:30:07,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:07,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:08,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:30:08,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-12 13:30:08,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:30:08,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1074 [2020-10-12 13:30:08,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:30:08,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:30:08,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:30:08,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-12 13:30:08,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 13:30:08,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:30:08,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:30:08,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:08,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:30:08,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:30:08,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:30:08,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 13:30:08,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:30:08,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:30:08,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:30:08,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:30:08,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:30:08,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:30:08,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:30:08,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:08,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:30:08,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 13:30:08,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:30:08,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-12 13:30:08,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:30:08,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:30:08,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:30:08,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-12 13:30:08,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:30:09,039 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:30:09,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544483488] [2020-10-12 13:30:09,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:30:09,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:30:09,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895042428] [2020-10-12 13:30:09,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:30:09,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:30:09,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:30:09,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:30:09,045 INFO L87 Difference]: Start difference. First operand 9489 states and 12938 transitions. Second operand 7 states. [2020-10-12 13:30:21,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:30:21,266 INFO L93 Difference]: Finished difference Result 27951 states and 39119 transitions. [2020-10-12 13:30:21,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:30:21,271 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 170 [2020-10-12 13:30:21,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:30:21,359 INFO L225 Difference]: With dead ends: 27951 [2020-10-12 13:30:21,359 INFO L226 Difference]: Without dead ends: 18468 [2020-10-12 13:30:21,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:30:21,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18468 states. [2020-10-12 13:30:21,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18468 to 16855. [2020-10-12 13:30:21,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16855 states. [2020-10-12 13:30:21,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16855 states to 16855 states and 21612 transitions. [2020-10-12 13:30:21,834 INFO L78 Accepts]: Start accepts. Automaton has 16855 states and 21612 transitions. Word has length 170 [2020-10-12 13:30:21,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:30:21,946 INFO L479 AbstractCegarLoop]: Abstraction has 16855 states and 21612 transitions. [2020-10-12 13:30:21,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:30:21,946 INFO L276 IsEmpty]: Start isEmpty. Operand 16855 states and 21612 transitions. [2020-10-12 13:30:21,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-12 13:30:21,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:30:21,951 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:30:21,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 13:30:21,951 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:30:21,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:30:21,952 INFO L82 PathProgramCache]: Analyzing trace with hash 364295070, now seen corresponding path program 1 times [2020-10-12 13:30:21,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:30:21,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492944815] [2020-10-12 13:30:21,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:30:21,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:30:22,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:22,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:23,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:30:23,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-12 13:30:23,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:30:23,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1523 [2020-10-12 13:30:23,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:30:23,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:30:23,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:30:23,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-12 13:30:23,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:30:23,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:30:23,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:30:23,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:23,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:30:23,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:30:23,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:30:23,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:30:23,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:30:23,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:30:23,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:30:23,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:30:23,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:30:23,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:30:23,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:30:23,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:23,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:30:23,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-12 13:30:23,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:30:23,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-12 13:30:23,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:30:23,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:30:23,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:30:23,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-12 13:30:23,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:30:24,169 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:30:24,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492944815] [2020-10-12 13:30:24,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:30:24,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 13:30:24,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598073944] [2020-10-12 13:30:24,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:30:24,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:30:24,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:30:24,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:30:24,172 INFO L87 Difference]: Start difference. First operand 16855 states and 21612 transitions. Second operand 8 states. [2020-10-12 13:30:40,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:30:40,479 INFO L93 Difference]: Finished difference Result 45904 states and 58878 transitions. [2020-10-12 13:30:40,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 13:30:40,481 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 205 [2020-10-12 13:30:40,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:30:40,595 INFO L225 Difference]: With dead ends: 45904 [2020-10-12 13:30:40,596 INFO L226 Difference]: Without dead ends: 29055 [2020-10-12 13:30:41,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-12 13:30:41,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29055 states. [2020-10-12 13:30:42,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29055 to 27273. [2020-10-12 13:30:42,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27273 states. [2020-10-12 13:30:42,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27273 states to 27273 states and 33785 transitions. [2020-10-12 13:30:42,105 INFO L78 Accepts]: Start accepts. Automaton has 27273 states and 33785 transitions. Word has length 205 [2020-10-12 13:30:42,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:30:42,106 INFO L479 AbstractCegarLoop]: Abstraction has 27273 states and 33785 transitions. [2020-10-12 13:30:42,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:30:42,106 INFO L276 IsEmpty]: Start isEmpty. Operand 27273 states and 33785 transitions. [2020-10-12 13:30:42,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-12 13:30:42,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:30:42,111 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2020-10-12 13:30:42,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 13:30:42,111 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:30:42,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:30:42,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1104923570, now seen corresponding path program 1 times [2020-10-12 13:30:42,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:30:42,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093228148] [2020-10-12 13:30:42,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:30:42,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:30:42,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:42,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:42,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:43,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:43,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:30:43,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 289 [2020-10-12 13:30:43,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:30:43,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1580 [2020-10-12 13:30:43,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:30:43,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:30:43,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-12 13:30:43,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-12 13:30:43,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:30:43,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:30:43,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:30:43,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:43,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:30:43,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:30:43,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:30:43,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 13:30:43,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:30:43,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:30:43,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:30:43,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:30:43,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:30:43,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:30:43,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:30:43,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:44,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:30:44,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 13:30:44,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:30:44,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 414 [2020-10-12 13:30:44,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:30:44,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:30:44,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:30:44,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-12 13:30:44,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:30:44,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-12 13:30:44,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:30:44,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:44,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:44,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:30:44,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:30:44,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:30:44,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-12 13:30:44,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:30:44,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:30:44,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:30:44,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 13:30:44,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:30:44,738 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 120 proven. 50 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 13:30:44,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093228148] [2020-10-12 13:30:44,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:30:44,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:30:44,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843897784] [2020-10-12 13:30:44,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:30:44,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:30:44,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:30:44,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:30:44,743 INFO L87 Difference]: Start difference. First operand 27273 states and 33785 transitions. Second operand 6 states. [2020-10-12 13:30:57,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:30:57,862 INFO L93 Difference]: Finished difference Result 63153 states and 81883 transitions. [2020-10-12 13:30:57,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:30:57,863 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 277 [2020-10-12 13:30:57,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:30:57,983 INFO L225 Difference]: With dead ends: 63153 [2020-10-12 13:30:57,983 INFO L226 Difference]: Without dead ends: 35886 [2020-10-12 13:30:58,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:30:58,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35886 states. [2020-10-12 13:30:58,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35886 to 34850. [2020-10-12 13:30:58,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34850 states. [2020-10-12 13:30:58,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34850 states to 34850 states and 44920 transitions. [2020-10-12 13:30:58,744 INFO L78 Accepts]: Start accepts. Automaton has 34850 states and 44920 transitions. Word has length 277 [2020-10-12 13:30:58,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:30:58,745 INFO L479 AbstractCegarLoop]: Abstraction has 34850 states and 44920 transitions. [2020-10-12 13:30:58,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:30:58,745 INFO L276 IsEmpty]: Start isEmpty. Operand 34850 states and 44920 transitions. [2020-10-12 13:30:58,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-10-12 13:30:58,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:30:58,752 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:30:58,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 13:30:58,752 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:30:58,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:30:58,753 INFO L82 PathProgramCache]: Analyzing trace with hash -506987518, now seen corresponding path program 1 times [2020-10-12 13:30:58,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:30:58,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607013478] [2020-10-12 13:30:58,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:30:58,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:30:58,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:59,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:00,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:00,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:31:00,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-12 13:31:00,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:31:00,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1314 [2020-10-12 13:31:00,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:31:00,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:31:00,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-12 13:31:00,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-12 13:31:00,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:31:00,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:31:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:31:00,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:00,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:31:00,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:31:00,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:31:00,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 13:31:00,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:31:00,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:31:00,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:31:00,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:31:00,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:31:00,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:31:00,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:31:00,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:00,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:31:00,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-12 13:31:00,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:31:00,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-12 13:31:00,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:31:00,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:31:00,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:31:00,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-12 13:31:00,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:31:00,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-12 13:31:00,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:31:00,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:00,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:00,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:31:00,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 13:31:00,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:31:00,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-12 13:31:00,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:31:00,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:31:00,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:31:00,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-12 13:31:00,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:31:01,083 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 134 proven. 50 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 13:31:01,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [607013478] [2020-10-12 13:31:01,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:31:01,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:31:01,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746238826] [2020-10-12 13:31:01,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:31:01,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:31:01,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:31:01,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:31:01,088 INFO L87 Difference]: Start difference. First operand 34850 states and 44920 transitions. Second operand 7 states. [2020-10-12 13:31:22,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:31:22,989 INFO L93 Difference]: Finished difference Result 129501 states and 177413 transitions. [2020-10-12 13:31:22,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:31:22,991 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 295 [2020-10-12 13:31:22,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:31:23,362 INFO L225 Difference]: With dead ends: 129501 [2020-10-12 13:31:23,363 INFO L226 Difference]: Without dead ends: 93792 [2020-10-12 13:31:23,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:31:23,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93792 states. [2020-10-12 13:31:26,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93792 to 93694. [2020-10-12 13:31:26,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93694 states. [2020-10-12 13:31:27,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93694 states to 93694 states and 125770 transitions. [2020-10-12 13:31:27,172 INFO L78 Accepts]: Start accepts. Automaton has 93694 states and 125770 transitions. Word has length 295 [2020-10-12 13:31:27,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:31:27,173 INFO L479 AbstractCegarLoop]: Abstraction has 93694 states and 125770 transitions. [2020-10-12 13:31:27,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:31:27,173 INFO L276 IsEmpty]: Start isEmpty. Operand 93694 states and 125770 transitions. [2020-10-12 13:31:27,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-10-12 13:31:27,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:31:27,181 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:31:27,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 13:31:27,182 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:31:27,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:31:27,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1060103123, now seen corresponding path program 1 times [2020-10-12 13:31:27,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:31:27,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458259307] [2020-10-12 13:31:27,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:31:27,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:31:27,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:27,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:31:27,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 354 [2020-10-12 13:31:27,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:31:27,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 570 [2020-10-12 13:31:27,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:31:27,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:31:27,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 297 [2020-10-12 13:31:27,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 13:31:27,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:31:27,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:31:27,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:31:27,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:27,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:31:27,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:31:27,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:31:27,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 13:31:27,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:31:27,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:31:27,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:31:27,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:31:27,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:31:27,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:31:28,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:31:28,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:28,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:31:28,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 13:31:28,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:31:28,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-12 13:31:28,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:31:28,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:31:28,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:31:28,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:31:28,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:31:28,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-12 13:31:28,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:31:28,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:28,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:31:28,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-12 13:31:28,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:31:28,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-12 13:31:28,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:31:28,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:31:28,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:31:28,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-12 13:31:28,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:31:28,418 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2020-10-12 13:31:28,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458259307] [2020-10-12 13:31:28,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:31:28,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:31:28,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579706642] [2020-10-12 13:31:28,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:31:28,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:31:28,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:31:28,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:31:28,421 INFO L87 Difference]: Start difference. First operand 93694 states and 125770 transitions. Second operand 5 states. [2020-10-12 13:31:46,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:31:46,084 INFO L93 Difference]: Finished difference Result 208015 states and 288541 transitions. [2020-10-12 13:31:46,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:31:46,085 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 342 [2020-10-12 13:31:46,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:31:46,659 INFO L225 Difference]: With dead ends: 208015 [2020-10-12 13:31:46,660 INFO L226 Difference]: Without dead ends: 115094 [2020-10-12 13:31:49,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:31:49,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115094 states. [2020-10-12 13:31:50,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115094 to 115079. [2020-10-12 13:31:50,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115079 states. [2020-10-12 13:31:51,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115079 states to 115079 states and 160864 transitions. [2020-10-12 13:31:51,182 INFO L78 Accepts]: Start accepts. Automaton has 115079 states and 160864 transitions. Word has length 342 [2020-10-12 13:31:51,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:31:51,183 INFO L479 AbstractCegarLoop]: Abstraction has 115079 states and 160864 transitions. [2020-10-12 13:31:51,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:31:51,184 INFO L276 IsEmpty]: Start isEmpty. Operand 115079 states and 160864 transitions. [2020-10-12 13:31:51,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-10-12 13:31:51,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:31:51,194 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:31:51,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 13:31:51,195 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:31:51,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:31:51,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1775258667, now seen corresponding path program 1 times [2020-10-12 13:31:51,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:31:51,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [111363073] [2020-10-12 13:31:51,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:31:51,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:31:51,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:51,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:53,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:31:53,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 366 [2020-10-12 13:31:53,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:31:53,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2106 [2020-10-12 13:31:53,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:31:53,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:31:53,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-12 13:31:53,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-12 13:31:53,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:31:53,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:31:53,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:31:53,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:53,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:31:53,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:31:53,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:31:53,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:31:53,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:31:53,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:31:53,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:31:53,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:31:53,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:31:53,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:31:53,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:31:53,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:53,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:31:53,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-12 13:31:53,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:31:53,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-12 13:31:53,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:31:53,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:31:53,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:31:53,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-12 13:31:53,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:31:53,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-12 13:31:53,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:31:53,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:53,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:31:53,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-12 13:31:53,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:31:53,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-12 13:31:53,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:31:53,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:31:53,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:31:53,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-12 13:31:53,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:31:54,684 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 245 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 13:31:54,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [111363073] [2020-10-12 13:31:54,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:31:54,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:31:54,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899391610] [2020-10-12 13:31:54,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:31:54,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:31:54,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:31:54,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:31:54,696 INFO L87 Difference]: Start difference. First operand 115079 states and 160864 transitions. Second operand 7 states. [2020-10-12 13:32:20,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:32:20,376 INFO L93 Difference]: Finished difference Result 229729 states and 322179 transitions. [2020-10-12 13:32:20,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:32:20,378 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 354 [2020-10-12 13:32:20,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:32:20,735 INFO L225 Difference]: With dead ends: 229729 [2020-10-12 13:32:20,735 INFO L226 Difference]: Without dead ends: 115423 [2020-10-12 13:32:20,841 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:32:20,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115423 states. [2020-10-12 13:32:22,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115423 to 115311. [2020-10-12 13:32:22,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115311 states. [2020-10-12 13:32:22,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115311 states to 115311 states and 161322 transitions. [2020-10-12 13:32:22,607 INFO L78 Accepts]: Start accepts. Automaton has 115311 states and 161322 transitions. Word has length 354 [2020-10-12 13:32:22,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:32:22,608 INFO L479 AbstractCegarLoop]: Abstraction has 115311 states and 161322 transitions. [2020-10-12 13:32:22,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:32:22,609 INFO L276 IsEmpty]: Start isEmpty. Operand 115311 states and 161322 transitions. [2020-10-12 13:32:23,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2020-10-12 13:32:23,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:32:23,394 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:32:23,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 13:32:23,394 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:32:23,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:32:23,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1148879081, now seen corresponding path program 1 times [2020-10-12 13:32:23,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:32:23,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2138429291] [2020-10-12 13:32:23,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:32:23,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:32:23,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:32:23,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:32:23,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:32:25,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:32:28,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:32:28,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 474 [2020-10-12 13:32:28,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:32:28,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 13:32:28,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:32:28,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:32:28,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 232 [2020-10-12 13:32:28,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 241 [2020-10-12 13:32:28,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:32:28,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:32:28,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:32:28,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:32:28,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:32:28,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:32:28,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:32:28,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:32:28,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:32:28,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:32:28,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:32:28,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:32:28,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:32:28,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:32:28,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:32:28,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:32:28,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:32:28,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 13:32:28,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:32:28,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-12 13:32:28,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:32:28,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:32:28,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:32:28,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:32:28,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:32:28,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-12 13:32:28,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:32:28,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:32:28,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:32:28,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:32:28,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:32:28,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-12 13:32:28,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:32:28,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:32:28,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:32:28,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 13:32:28,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:32:28,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-12 13:32:28,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:32:28,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:32:28,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:32:29,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:32:29,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-12 13:32:29,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:32:29,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 376 [2020-10-12 13:32:29,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:32:29,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:32:29,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:32:29,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-12 13:32:29,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:32:29,445 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 316 proven. 51 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-12 13:32:29,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2138429291] [2020-10-12 13:32:29,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:32:29,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:32:29,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137257689] [2020-10-12 13:32:29,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:32:29,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:32:29,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:32:29,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:32:29,448 INFO L87 Difference]: Start difference. First operand 115311 states and 161322 transitions. Second operand 6 states. [2020-10-12 13:32:53,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:32:53,163 INFO L93 Difference]: Finished difference Result 263381 states and 384258 transitions. [2020-10-12 13:32:53,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:32:53,166 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 460 [2020-10-12 13:32:53,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:32:53,634 INFO L225 Difference]: With dead ends: 263381 [2020-10-12 13:32:53,635 INFO L226 Difference]: Without dead ends: 142380 [2020-10-12 13:32:53,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:32:53,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142380 states.