/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label35.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 06:54:16,220 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 06:54:16,223 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 06:54:16,248 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 06:54:16,249 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 06:54:16,250 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 06:54:16,251 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 06:54:16,253 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 06:54:16,255 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 06:54:16,256 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 06:54:16,256 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 06:54:16,258 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 06:54:16,258 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 06:54:16,259 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 06:54:16,260 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 06:54:16,261 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 06:54:16,262 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 06:54:16,263 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 06:54:16,265 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 06:54:16,267 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 06:54:16,268 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 06:54:16,269 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 06:54:16,270 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 06:54:16,271 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 06:54:16,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 06:54:16,274 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 06:54:16,274 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 06:54:16,275 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 06:54:16,276 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 06:54:16,277 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 06:54:16,277 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 06:54:16,278 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 06:54:16,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 06:54:16,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 06:54:16,280 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 06:54:16,280 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 06:54:16,281 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 06:54:16,281 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 06:54:16,282 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 06:54:16,283 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 06:54:16,283 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 06:54:16,284 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 06:54:16,307 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 06:54:16,307 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 06:54:16,309 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 06:54:16,309 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 06:54:16,309 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 06:54:16,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 06:54:16,310 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 06:54:16,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 06:54:16,310 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 06:54:16,310 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 06:54:16,310 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 06:54:16,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 06:54:16,311 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 06:54:16,311 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 06:54:16,311 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 06:54:16,311 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 06:54:16,312 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 06:54:16,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 06:54:16,312 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 06:54:16,312 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 06:54:16,312 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 06:54:16,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:54:16,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 06:54:16,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 06:54:16,313 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 06:54:16,313 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 06:54:16,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 06:54:16,314 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 06:54:16,314 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 06:54:16,314 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 06:54:16,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 06:54:16,636 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 06:54:16,640 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 06:54:16,641 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 06:54:16,642 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 06:54:16,643 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label35.c [2020-10-13 06:54:16,706 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/367c8b0a0/af8a1b61f7b84b32a907fc646b4c5724/FLAGb6f19f360 [2020-10-13 06:54:17,629 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 06:54:17,630 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label35.c [2020-10-13 06:54:17,677 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/367c8b0a0/af8a1b61f7b84b32a907fc646b4c5724/FLAGb6f19f360 [2020-10-13 06:54:18,003 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/367c8b0a0/af8a1b61f7b84b32a907fc646b4c5724 [2020-10-13 06:54:18,012 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 06:54:18,014 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 06:54:18,016 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 06:54:18,016 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 06:54:18,021 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 06:54:18,023 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:54:18" (1/1) ... [2020-10-13 06:54:18,027 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71e21b85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:18, skipping insertion in model container [2020-10-13 06:54:18,027 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:54:18" (1/1) ... [2020-10-13 06:54:18,038 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 06:54:18,307 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 06:54:20,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:54:20,844 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 06:54:22,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:54:22,179 INFO L208 MainTranslator]: Completed translation [2020-10-13 06:54:22,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:22 WrapperNode [2020-10-13 06:54:22,180 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 06:54:22,181 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 06:54:22,181 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 06:54:22,181 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 06:54:22,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:22" (1/1) ... [2020-10-13 06:54:22,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:22" (1/1) ... [2020-10-13 06:54:22,280 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:22" (1/1) ... [2020-10-13 06:54:22,281 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:22" (1/1) ... [2020-10-13 06:54:22,508 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:22" (1/1) ... [2020-10-13 06:54:22,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:22" (1/1) ... [2020-10-13 06:54:22,676 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:22" (1/1) ... [2020-10-13 06:54:22,778 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 06:54:22,779 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 06:54:22,779 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 06:54:22,779 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 06:54:22,780 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:22" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:54:22,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 06:54:22,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 06:54:22,856 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 06:54:22,857 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 06:54:22,857 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 06:54:22,857 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 06:54:22,857 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-13 06:54:22,857 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-13 06:54:22,858 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-13 06:54:22,858 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-13 06:54:22,858 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 06:54:22,858 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 06:54:22,858 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 06:54:22,858 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 06:54:22,859 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 06:54:22,859 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-13 06:54:22,859 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-13 06:54:22,859 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-13 06:54:22,859 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-13 06:54:22,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 06:54:22,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 06:54:22,860 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 06:54:22,860 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 06:54:22,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 06:54:22,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 06:54:31,490 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 06:54:31,491 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 06:54:31,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:54:31 BoogieIcfgContainer [2020-10-13 06:54:31,506 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 06:54:31,508 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 06:54:31,508 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 06:54:31,512 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 06:54:31,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:54:18" (1/3) ... [2020-10-13 06:54:31,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50cac747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:54:31, skipping insertion in model container [2020-10-13 06:54:31,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:22" (2/3) ... [2020-10-13 06:54:31,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50cac747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:54:31, skipping insertion in model container [2020-10-13 06:54:31,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:54:31" (3/3) ... [2020-10-13 06:54:31,516 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem05_label35.c [2020-10-13 06:54:31,527 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 06:54:31,538 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 06:54:31,554 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 06:54:31,587 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 06:54:31,587 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 06:54:31,587 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 06:54:31,588 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 06:54:31,588 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 06:54:31,588 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 06:54:31,588 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 06:54:31,588 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 06:54:31,643 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states. [2020-10-13 06:54:31,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1679 [2020-10-13 06:54:31,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:54:31,813 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:54:31,814 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:54:31,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:54:31,822 INFO L82 PathProgramCache]: Analyzing trace with hash 92203265, now seen corresponding path program 1 times [2020-10-13 06:54:31,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:54:31,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1899406625] [2020-10-13 06:54:31,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:54:32,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:54:33,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:54:38,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:54:38,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1700 [2020-10-13 06:54:38,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:54:38,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5323 [2020-10-13 06:54:38,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:54:38,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 06:54:38,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:54:38,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1694 [2020-10-13 06:54:38,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 06:54:40,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:54:40,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:54:40,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:54:40,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:54:40,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:54:40,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:54:40,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 06:54:40,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:54:40,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:54:40,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:54:40,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:54:40,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:54:43,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:54:43,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1899406625] [2020-10-13 06:54:43,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:54:43,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 06:54:43,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615257706] [2020-10-13 06:54:43,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 06:54:43,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:54:43,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 06:54:43,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 06:54:43,204 INFO L87 Difference]: Start difference. First operand 2222 states. Second operand 4 states. [2020-10-13 06:55:00,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:55:00,556 INFO L93 Difference]: Finished difference Result 6311 states and 11851 transitions. [2020-10-13 06:55:00,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:55:00,558 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1678 [2020-10-13 06:55:00,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:55:00,619 INFO L225 Difference]: With dead ends: 6311 [2020-10-13 06:55:00,620 INFO L226 Difference]: Without dead ends: 4025 [2020-10-13 06:55:00,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:55:00,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4025 states. [2020-10-13 06:55:00,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4025 to 3996. [2020-10-13 06:55:00,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3996 states. [2020-10-13 06:55:00,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3996 states to 3996 states and 6427 transitions. [2020-10-13 06:55:00,914 INFO L78 Accepts]: Start accepts. Automaton has 3996 states and 6427 transitions. Word has length 1678 [2020-10-13 06:55:00,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:55:00,919 INFO L479 AbstractCegarLoop]: Abstraction has 3996 states and 6427 transitions. [2020-10-13 06:55:00,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 06:55:00,920 INFO L276 IsEmpty]: Start isEmpty. Operand 3996 states and 6427 transitions. [2020-10-13 06:55:01,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1688 [2020-10-13 06:55:01,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:55:01,018 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:55:01,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 06:55:01,019 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:55:01,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:55:01,020 INFO L82 PathProgramCache]: Analyzing trace with hash 462274806, now seen corresponding path program 1 times [2020-10-13 06:55:01,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:55:01,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499558246] [2020-10-13 06:55:01,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:55:01,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:55:01,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:55:03,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:55:06,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:55:06,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1711 [2020-10-13 06:55:06,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:55:06,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-13 06:55:06,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:55:06,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:55:06,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:55:06,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 06:55:06,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:55:07,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:55:07,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:55:07,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:55:07,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:55:07,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:55:07,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:55:07,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:55:07,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:55:07,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:55:07,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:55:07,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:55:07,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:55:07,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:55:07,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:55:07,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:55:07,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:55:07,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 06:55:07,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:55:07,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 06:55:07,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:55:07,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:55:07,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:55:07,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 06:55:07,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:55:08,806 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:55:08,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499558246] [2020-10-13 06:55:08,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:55:08,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 06:55:08,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324770246] [2020-10-13 06:55:08,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:55:08,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:55:08,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:55:08,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:55:08,814 INFO L87 Difference]: Start difference. First operand 3996 states and 6427 transitions. Second operand 7 states. [2020-10-13 06:55:31,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:55:31,570 INFO L93 Difference]: Finished difference Result 11881 states and 19293 transitions. [2020-10-13 06:55:31,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:55:31,570 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1687 [2020-10-13 06:55:31,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:55:31,621 INFO L225 Difference]: With dead ends: 11881 [2020-10-13 06:55:31,622 INFO L226 Difference]: Without dead ends: 7891 [2020-10-13 06:55:31,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:55:31,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7891 states. [2020-10-13 06:55:31,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7891 to 7666. [2020-10-13 06:55:31,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7666 states. [2020-10-13 06:55:31,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7666 states to 7666 states and 11504 transitions. [2020-10-13 06:55:31,917 INFO L78 Accepts]: Start accepts. Automaton has 7666 states and 11504 transitions. Word has length 1687 [2020-10-13 06:55:31,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:55:31,918 INFO L479 AbstractCegarLoop]: Abstraction has 7666 states and 11504 transitions. [2020-10-13 06:55:31,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:55:31,918 INFO L276 IsEmpty]: Start isEmpty. Operand 7666 states and 11504 transitions. [2020-10-13 06:55:32,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1690 [2020-10-13 06:55:32,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:55:32,071 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:55:32,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 06:55:32,072 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:55:32,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:55:32,073 INFO L82 PathProgramCache]: Analyzing trace with hash -552711214, now seen corresponding path program 1 times [2020-10-13 06:55:32,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:55:32,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735851822] [2020-10-13 06:55:32,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:55:32,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:55:32,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:55:35,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:55:37,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:55:37,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1713 [2020-10-13 06:55:37,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:55:37,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5259 [2020-10-13 06:55:37,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:55:37,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:55:37,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:55:37,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:55:37,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:55:38,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:55:38,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:55:38,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:55:38,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:55:38,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:55:38,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:55:38,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 06:55:38,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:55:38,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:55:38,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:55:38,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:55:38,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:55:38,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:55:38,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:55:38,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:55:38,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:55:38,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:55:38,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:55:38,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 06:55:38,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:55:38,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:55:38,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:55:38,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:55:38,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:55:39,863 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:55:39,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735851822] [2020-10-13 06:55:39,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:55:39,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 06:55:39,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882898885] [2020-10-13 06:55:39,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:55:39,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:55:39,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:55:39,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:55:39,867 INFO L87 Difference]: Start difference. First operand 7666 states and 11504 transitions. Second operand 7 states. [2020-10-13 06:56:02,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:56:02,301 INFO L93 Difference]: Finished difference Result 22986 states and 35369 transitions. [2020-10-13 06:56:02,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:56:02,303 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1689 [2020-10-13 06:56:02,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:56:02,369 INFO L225 Difference]: With dead ends: 22986 [2020-10-13 06:56:02,369 INFO L226 Difference]: Without dead ends: 15326 [2020-10-13 06:56:02,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:56:02,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15326 states. [2020-10-13 06:56:02,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15326 to 15124. [2020-10-13 06:56:02,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15124 states. [2020-10-13 06:56:02,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15124 states to 15124 states and 21216 transitions. [2020-10-13 06:56:02,810 INFO L78 Accepts]: Start accepts. Automaton has 15124 states and 21216 transitions. Word has length 1689 [2020-10-13 06:56:02,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:56:02,811 INFO L479 AbstractCegarLoop]: Abstraction has 15124 states and 21216 transitions. [2020-10-13 06:56:02,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:56:02,811 INFO L276 IsEmpty]: Start isEmpty. Operand 15124 states and 21216 transitions. [2020-10-13 06:56:02,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1701 [2020-10-13 06:56:02,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:56:02,891 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:56:02,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 06:56:02,895 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:56:02,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:56:02,896 INFO L82 PathProgramCache]: Analyzing trace with hash 211674146, now seen corresponding path program 1 times [2020-10-13 06:56:02,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:56:02,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [261721542] [2020-10-13 06:56:02,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:56:03,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:56:03,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:56:04,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:56:05,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:56:08,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:56:08,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1724 [2020-10-13 06:56:08,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:56:08,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5087 [2020-10-13 06:56:08,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:56:08,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:56:08,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:56:08,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 06:56:08,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:56:08,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:56:08,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:56:08,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:56:08,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:56:08,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:56:08,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:56:08,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:56:08,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:56:08,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:56:08,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:56:08,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:56:08,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:56:08,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:56:08,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:56:08,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:56:08,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:56:08,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 06:56:08,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:56:08,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 06:56:08,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:56:08,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:56:08,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:56:08,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 06:56:08,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:56:10,425 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:56:10,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [261721542] [2020-10-13 06:56:10,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:56:10,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 06:56:10,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142042408] [2020-10-13 06:56:10,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:56:10,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:56:10,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:56:10,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:56:10,430 INFO L87 Difference]: Start difference. First operand 15124 states and 21216 transitions. Second operand 7 states. [2020-10-13 06:56:31,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:56:31,850 INFO L93 Difference]: Finished difference Result 38283 states and 54298 transitions. [2020-10-13 06:56:31,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:56:31,851 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1700 [2020-10-13 06:56:31,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:56:31,947 INFO L225 Difference]: With dead ends: 38283 [2020-10-13 06:56:31,948 INFO L226 Difference]: Without dead ends: 23165 [2020-10-13 06:56:31,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:56:32,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23165 states. [2020-10-13 06:56:32,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23165 to 22886. [2020-10-13 06:56:32,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22886 states. [2020-10-13 06:56:32,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22886 states to 22886 states and 31123 transitions. [2020-10-13 06:56:32,517 INFO L78 Accepts]: Start accepts. Automaton has 22886 states and 31123 transitions. Word has length 1700 [2020-10-13 06:56:32,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:56:32,518 INFO L479 AbstractCegarLoop]: Abstraction has 22886 states and 31123 transitions. [2020-10-13 06:56:32,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:56:32,518 INFO L276 IsEmpty]: Start isEmpty. Operand 22886 states and 31123 transitions. [2020-10-13 06:56:32,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1736 [2020-10-13 06:56:32,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:56:32,626 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:56:32,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 06:56:32,630 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:56:32,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:56:32,631 INFO L82 PathProgramCache]: Analyzing trace with hash -807414662, now seen corresponding path program 1 times [2020-10-13 06:56:32,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:56:32,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274954388] [2020-10-13 06:56:32,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:56:32,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:56:32,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:56:34,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:56:37,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:56:37,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1759 [2020-10-13 06:56:37,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:56:37,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-13 06:56:37,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:56:37,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:56:37,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:56:37,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 06:56:37,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:56:38,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:56:38,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:56:38,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:56:38,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:56:38,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:56:38,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:56:38,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:56:38,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:56:38,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:56:38,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:56:38,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:56:38,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:56:38,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:56:38,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:56:38,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:56:38,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:56:38,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 06:56:38,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:56:38,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 06:56:38,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:56:38,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:56:38,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:56:38,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 06:56:38,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:56:39,598 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:56:39,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274954388] [2020-10-13 06:56:39,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:56:39,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 06:56:39,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923983940] [2020-10-13 06:56:39,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:56:39,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:56:39,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:56:39,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:56:39,602 INFO L87 Difference]: Start difference. First operand 22886 states and 31123 transitions. Second operand 7 states. [2020-10-13 06:57:02,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:57:02,632 INFO L93 Difference]: Finished difference Result 69364 states and 101929 transitions. [2020-10-13 06:57:02,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:57:02,633 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1735 [2020-10-13 06:57:02,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:57:02,805 INFO L225 Difference]: With dead ends: 69364 [2020-10-13 06:57:02,805 INFO L226 Difference]: Without dead ends: 46484 [2020-10-13 06:57:02,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:57:02,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46484 states. [2020-10-13 06:57:03,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46484 to 45918. [2020-10-13 06:57:03,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45918 states. [2020-10-13 06:57:03,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45918 states to 45918 states and 64569 transitions. [2020-10-13 06:57:03,981 INFO L78 Accepts]: Start accepts. Automaton has 45918 states and 64569 transitions. Word has length 1735 [2020-10-13 06:57:03,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:57:03,983 INFO L479 AbstractCegarLoop]: Abstraction has 45918 states and 64569 transitions. [2020-10-13 06:57:03,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:57:03,983 INFO L276 IsEmpty]: Start isEmpty. Operand 45918 states and 64569 transitions. [2020-10-13 06:57:04,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1810 [2020-10-13 06:57:04,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:57:04,141 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:57:04,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 06:57:04,141 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:57:04,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:57:04,142 INFO L82 PathProgramCache]: Analyzing trace with hash 950934761, now seen corresponding path program 1 times [2020-10-13 06:57:04,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:57:04,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669094932] [2020-10-13 06:57:04,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:57:04,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:57:04,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:57:07,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:57:08,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:57:09,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:57:09,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1835 [2020-10-13 06:57:09,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:57:09,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5121 [2020-10-13 06:57:09,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:57:09,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:57:09,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-13 06:57:09,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 06:57:09,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:57:09,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:57:09,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:57:09,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:57:09,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:57:09,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:57:09,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:57:09,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:57:09,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:57:09,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:57:09,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:57:09,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:57:09,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:57:10,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:57:10,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:57:10,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:57:10,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:57:10,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 06:57:10,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:57:10,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-13 06:57:10,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:57:10,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:57:10,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:57:10,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-13 06:57:10,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:57:10,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-13 06:57:10,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:57:10,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:57:10,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:57:10,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-13 06:57:10,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:57:10,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 06:57:10,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:57:10,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:57:10,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:57:10,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 06:57:10,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:57:11,633 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:57:11,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669094932] [2020-10-13 06:57:11,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:57:11,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 06:57:11,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38562831] [2020-10-13 06:57:11,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:57:11,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:57:11,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:57:11,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:57:11,636 INFO L87 Difference]: Start difference. First operand 45918 states and 64569 transitions. Second operand 8 states. [2020-10-13 06:57:46,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:57:46,355 INFO L93 Difference]: Finished difference Result 121907 states and 183446 transitions. [2020-10-13 06:57:46,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 06:57:46,357 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1809 [2020-10-13 06:57:46,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:57:46,639 INFO L225 Difference]: With dead ends: 121907 [2020-10-13 06:57:46,640 INFO L226 Difference]: Without dead ends: 75995 [2020-10-13 06:57:46,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-13 06:57:46,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75995 states. [2020-10-13 06:57:48,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75995 to 75694. [2020-10-13 06:57:48,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75694 states. [2020-10-13 06:57:48,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75694 states to 75694 states and 107291 transitions. [2020-10-13 06:57:48,570 INFO L78 Accepts]: Start accepts. Automaton has 75694 states and 107291 transitions. Word has length 1809 [2020-10-13 06:57:48,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:57:48,571 INFO L479 AbstractCegarLoop]: Abstraction has 75694 states and 107291 transitions. [2020-10-13 06:57:48,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:57:48,571 INFO L276 IsEmpty]: Start isEmpty. Operand 75694 states and 107291 transitions. [2020-10-13 06:57:48,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1832 [2020-10-13 06:57:48,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:57:48,815 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:57:48,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 06:57:48,816 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:57:48,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:57:48,818 INFO L82 PathProgramCache]: Analyzing trace with hash -127263217, now seen corresponding path program 1 times [2020-10-13 06:57:48,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:57:48,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [805618391] [2020-10-13 06:57:48,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:57:49,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:57:49,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:57:49,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking...