/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 19:20:10,122 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 19:20:10,124 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 19:20:10,147 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 19:20:10,147 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 19:20:10,148 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 19:20:10,150 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 19:20:10,152 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 19:20:10,153 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 19:20:10,154 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 19:20:10,155 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 19:20:10,156 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 19:20:10,156 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 19:20:10,157 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 19:20:10,158 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 19:20:10,159 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 19:20:10,160 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 19:20:10,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 19:20:10,163 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 19:20:10,164 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 19:20:10,166 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 19:20:10,167 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 19:20:10,168 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 19:20:10,168 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 19:20:10,171 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 19:20:10,171 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 19:20:10,171 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 19:20:10,172 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 19:20:10,172 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 19:20:10,173 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 19:20:10,173 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 19:20:10,174 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 19:20:10,175 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 19:20:10,175 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 19:20:10,176 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 19:20:10,177 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 19:20:10,177 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 19:20:10,177 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 19:20:10,178 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 19:20:10,178 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 19:20:10,179 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 19:20:10,180 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 19:20:10,201 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 19:20:10,201 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 19:20:10,202 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 19:20:10,202 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 19:20:10,203 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 19:20:10,203 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 19:20:10,203 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 19:20:10,203 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 19:20:10,203 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 19:20:10,203 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 19:20:10,204 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 19:20:10,204 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 19:20:10,204 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 19:20:10,204 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 19:20:10,204 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 19:20:10,205 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 19:20:10,205 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 19:20:10,205 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 19:20:10,205 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 19:20:10,205 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 19:20:10,206 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 19:20:10,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:20:10,206 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 19:20:10,206 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 19:20:10,206 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 19:20:10,207 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 19:20:10,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 19:20:10,207 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 19:20:10,207 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 19:20:10,207 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 19:20:10,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 19:20:10,528 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 19:20:10,532 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 19:20:10,533 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 19:20:10,534 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 19:20:10,534 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label08.c [2020-10-14 19:20:10,608 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7207492af/17e16862fd064449a7d8632b9593f10f/FLAGd570ab779 [2020-10-14 19:20:11,416 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 19:20:11,417 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label08.c [2020-10-14 19:20:11,456 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7207492af/17e16862fd064449a7d8632b9593f10f/FLAGd570ab779 [2020-10-14 19:20:11,932 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7207492af/17e16862fd064449a7d8632b9593f10f [2020-10-14 19:20:11,945 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 19:20:11,947 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 19:20:11,948 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 19:20:11,948 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 19:20:11,951 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 19:20:11,952 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:20:11" (1/1) ... [2020-10-14 19:20:11,955 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a1d4b70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:20:11, skipping insertion in model container [2020-10-14 19:20:11,955 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:20:11" (1/1) ... [2020-10-14 19:20:11,963 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 19:20:12,109 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 19:20:14,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:20:14,061 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 19:20:14,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:20:14,902 INFO L208 MainTranslator]: Completed translation [2020-10-14 19:20:14,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:20:14 WrapperNode [2020-10-14 19:20:14,913 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 19:20:14,915 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 19:20:14,915 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 19:20:14,915 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 19:20:14,936 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:20:14" (1/1) ... [2020-10-14 19:20:14,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:20:14" (1/1) ... [2020-10-14 19:20:15,023 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:20:14" (1/1) ... [2020-10-14 19:20:15,023 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:20:14" (1/1) ... [2020-10-14 19:20:15,178 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:20:14" (1/1) ... [2020-10-14 19:20:15,230 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:20:14" (1/1) ... [2020-10-14 19:20:15,262 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:20:14" (1/1) ... [2020-10-14 19:20:15,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 19:20:15,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 19:20:15,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 19:20:15,298 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 19:20:15,300 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:20:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:20:15,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 19:20:15,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 19:20:15,396 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 19:20:15,396 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 19:20:15,397 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 19:20:15,398 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 19:20:15,398 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 19:20:15,399 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 19:20:15,399 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 19:20:15,399 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 19:20:15,399 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 19:20:15,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 19:20:15,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 19:20:15,400 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 19:20:15,400 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 19:20:15,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 19:20:15,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 19:20:19,650 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 19:20:19,651 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 19:20:19,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:20:19 BoogieIcfgContainer [2020-10-14 19:20:19,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 19:20:19,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 19:20:19,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 19:20:19,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 19:20:19,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:20:11" (1/3) ... [2020-10-14 19:20:19,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26ec757a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:20:19, skipping insertion in model container [2020-10-14 19:20:19,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:20:14" (2/3) ... [2020-10-14 19:20:19,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26ec757a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:20:19, skipping insertion in model container [2020-10-14 19:20:19,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:20:19" (3/3) ... [2020-10-14 19:20:19,692 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label08.c [2020-10-14 19:20:19,704 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 19:20:19,714 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 19:20:19,727 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 19:20:19,755 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 19:20:19,755 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 19:20:19,755 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 19:20:19,755 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 19:20:19,756 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 19:20:19,756 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 19:20:19,756 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 19:20:19,756 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 19:20:19,795 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-14 19:20:19,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 820 [2020-10-14 19:20:19,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:20:19,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:20:19,895 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:20:19,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:20:19,902 INFO L82 PathProgramCache]: Analyzing trace with hash 2032891658, now seen corresponding path program 1 times [2020-10-14 19:20:19,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:20:19,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054442797] [2020-10-14 19:20:19,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:20:20,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:20,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:22,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:25,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:25,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 833 [2020-10-14 19:20:25,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:20:25,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5088 [2020-10-14 19:20:25,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:25,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:25,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 19:20:25,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:20:25,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 827 [2020-10-14 19:20:25,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 19:20:26,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:20:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:26,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:26,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:26,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:20:26,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:20:26,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 19:20:26,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:26,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:26,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:20:26,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:20:26,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:20:26,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:20:27,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:20:27,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054442797] [2020-10-14 19:20:27,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:20:27,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 19:20:27,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600007808] [2020-10-14 19:20:27,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 19:20:27,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:20:27,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 19:20:27,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 19:20:27,378 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 4 states. [2020-10-14 19:20:34,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:20:34,730 INFO L93 Difference]: Finished difference Result 2672 states and 5137 transitions. [2020-10-14 19:20:34,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:20:34,733 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 819 [2020-10-14 19:20:34,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:20:34,802 INFO L225 Difference]: With dead ends: 2672 [2020-10-14 19:20:34,803 INFO L226 Difference]: Without dead ends: 1702 [2020-10-14 19:20:34,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:20:34,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2020-10-14 19:20:35,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1689. [2020-10-14 19:20:35,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1689 states. [2020-10-14 19:20:35,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 3029 transitions. [2020-10-14 19:20:35,029 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 3029 transitions. Word has length 819 [2020-10-14 19:20:35,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:20:35,033 INFO L479 AbstractCegarLoop]: Abstraction has 1689 states and 3029 transitions. [2020-10-14 19:20:35,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 19:20:35,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 3029 transitions. [2020-10-14 19:20:35,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 828 [2020-10-14 19:20:35,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:20:35,116 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 19:20:35,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 19:20:35,117 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:20:35,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:20:35,118 INFO L82 PathProgramCache]: Analyzing trace with hash 24217691, now seen corresponding path program 1 times [2020-10-14 19:20:35,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:20:35,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171911399] [2020-10-14 19:20:35,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:20:35,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:35,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:36,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:40,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:40,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 843 [2020-10-14 19:20:40,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:20:40,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5127 [2020-10-14 19:20:40,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:40,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:40,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:20:40,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 19:20:40,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 824 [2020-10-14 19:20:40,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 19:20:41,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:20:41,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:41,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:41,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:41,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:20:41,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:20:41,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:20:41,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:41,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:41,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:20:41,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:20:41,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:20:41,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 19:20:41,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:20:41,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:41,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:41,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:41,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 19:20:41,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:20:41,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 19:20:41,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:41,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:41,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:20:41,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:20:41,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 19:20:41,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:20:42,260 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:20:42,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1171911399] [2020-10-14 19:20:42,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:20:42,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:20:42,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567111635] [2020-10-14 19:20:42,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:20:42,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:20:42,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:20:42,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:20:42,265 INFO L87 Difference]: Start difference. First operand 1689 states and 3029 transitions. Second operand 5 states. [2020-10-14 19:20:50,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:20:50,905 INFO L93 Difference]: Finished difference Result 5075 states and 9154 transitions. [2020-10-14 19:20:50,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:20:50,907 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 827 [2020-10-14 19:20:50,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:20:50,929 INFO L225 Difference]: With dead ends: 5075 [2020-10-14 19:20:50,929 INFO L226 Difference]: Without dead ends: 3392 [2020-10-14 19:20:50,934 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:20:50,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3392 states. [2020-10-14 19:20:51,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3392 to 3388. [2020-10-14 19:20:51,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3388 states. [2020-10-14 19:20:51,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3388 states to 3388 states and 5301 transitions. [2020-10-14 19:20:51,037 INFO L78 Accepts]: Start accepts. Automaton has 3388 states and 5301 transitions. Word has length 827 [2020-10-14 19:20:51,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:20:51,039 INFO L479 AbstractCegarLoop]: Abstraction has 3388 states and 5301 transitions. [2020-10-14 19:20:51,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:20:51,039 INFO L276 IsEmpty]: Start isEmpty. Operand 3388 states and 5301 transitions. [2020-10-14 19:20:51,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 835 [2020-10-14 19:20:51,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:20:51,055 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:20:51,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 19:20:51,055 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:20:51,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:20:51,056 INFO L82 PathProgramCache]: Analyzing trace with hash 411158737, now seen corresponding path program 1 times [2020-10-14 19:20:51,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:20:51,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1936296495] [2020-10-14 19:20:51,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:20:51,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:51,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:52,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:55,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:56,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:56,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 850 [2020-10-14 19:20:56,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:20:56,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-14 19:20:56,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:56,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:56,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:20:56,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 19:20:56,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 824 [2020-10-14 19:20:56,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:20:56,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:20:56,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:56,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:56,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:56,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:20:56,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:20:56,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:20:56,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:56,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:56,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:20:56,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:20:56,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:20:56,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:20:56,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:20:56,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:56,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:56,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:56,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 19:20:56,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:20:56,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 19:20:56,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:56,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:56,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:20:56,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:20:56,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 19:20:56,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:20:57,297 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:20:57,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1936296495] [2020-10-14 19:20:57,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:20:57,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:20:57,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146882897] [2020-10-14 19:20:57,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:20:57,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:20:57,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:20:57,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:20:57,301 INFO L87 Difference]: Start difference. First operand 3388 states and 5301 transitions. Second operand 5 states. [2020-10-14 19:21:05,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:21:05,262 INFO L93 Difference]: Finished difference Result 10153 states and 16093 transitions. [2020-10-14 19:21:05,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:21:05,265 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 834 [2020-10-14 19:21:05,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:21:05,309 INFO L225 Difference]: With dead ends: 10153 [2020-10-14 19:21:05,309 INFO L226 Difference]: Without dead ends: 6771 [2020-10-14 19:21:05,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:21:05,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6771 states. [2020-10-14 19:21:05,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6771 to 6767. [2020-10-14 19:21:05,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6767 states. [2020-10-14 19:21:05,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6767 states to 6767 states and 10218 transitions. [2020-10-14 19:21:05,495 INFO L78 Accepts]: Start accepts. Automaton has 6767 states and 10218 transitions. Word has length 834 [2020-10-14 19:21:05,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:21:05,499 INFO L479 AbstractCegarLoop]: Abstraction has 6767 states and 10218 transitions. [2020-10-14 19:21:05,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:21:05,500 INFO L276 IsEmpty]: Start isEmpty. Operand 6767 states and 10218 transitions. [2020-10-14 19:21:05,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 840 [2020-10-14 19:21:05,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:21:05,532 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 19:21:05,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 19:21:05,532 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:21:05,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:21:05,533 INFO L82 PathProgramCache]: Analyzing trace with hash 502675443, now seen corresponding path program 1 times [2020-10-14 19:21:05,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:21:05,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836706777] [2020-10-14 19:21:05,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:21:05,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:21:05,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:06,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:07,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:10,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:21:10,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 855 [2020-10-14 19:21:10,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:21:10,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5101 [2020-10-14 19:21:10,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:21:10,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:21:10,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:21:10,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 19:21:10,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 797 [2020-10-14 19:21:10,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:21:11,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:21:11,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:21:11,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:11,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:21:11,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:21:11,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:21:11,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:21:11,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:21:11,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:21:11,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:21:11,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:21:11,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:21:11,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:21:11,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:21:11,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:21:11,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:11,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:21:11,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 19:21:11,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:21:11,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 19:21:11,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:21:11,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:21:11,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:21:11,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:21:11,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 19:21:11,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:21:15,950 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:21:15,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836706777] [2020-10-14 19:21:15,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:21:15,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:21:15,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473480926] [2020-10-14 19:21:15,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:21:15,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:21:15,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:21:15,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:21:15,954 INFO L87 Difference]: Start difference. First operand 6767 states and 10218 transitions. Second operand 5 states. [2020-10-14 19:21:24,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:21:24,673 INFO L93 Difference]: Finished difference Result 14320 states and 22031 transitions. [2020-10-14 19:21:24,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:21:24,674 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 839 [2020-10-14 19:21:24,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:21:24,703 INFO L225 Difference]: With dead ends: 14320 [2020-10-14 19:21:24,704 INFO L226 Difference]: Without dead ends: 6771 [2020-10-14 19:21:24,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:21:24,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6771 states. [2020-10-14 19:21:24,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6771 to 6767. [2020-10-14 19:21:24,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6767 states. [2020-10-14 19:21:24,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6767 states to 6767 states and 10214 transitions. [2020-10-14 19:21:24,861 INFO L78 Accepts]: Start accepts. Automaton has 6767 states and 10214 transitions. Word has length 839 [2020-10-14 19:21:24,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:21:24,862 INFO L479 AbstractCegarLoop]: Abstraction has 6767 states and 10214 transitions. [2020-10-14 19:21:24,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:21:24,862 INFO L276 IsEmpty]: Start isEmpty. Operand 6767 states and 10214 transitions. [2020-10-14 19:21:24,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 841 [2020-10-14 19:21:24,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:21:24,890 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 19:21:24,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 19:21:24,891 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:21:24,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:21:24,891 INFO L82 PathProgramCache]: Analyzing trace with hash -286983523, now seen corresponding path program 1 times [2020-10-14 19:21:24,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:21:24,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355587589] [2020-10-14 19:21:24,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:21:24,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:21:24,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:25,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:26,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:30,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:21:30,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 856 [2020-10-14 19:21:30,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:21:30,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5128 [2020-10-14 19:21:30,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:21:30,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:21:30,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:21:30,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 19:21:30,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 796 [2020-10-14 19:21:30,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:21:30,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:21:30,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:21:30,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:30,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:21:30,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:21:30,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:21:30,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:21:30,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:21:30,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:21:30,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:21:30,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:21:30,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:21:30,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:21:30,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:21:30,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:21:30,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:30,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:21:30,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 19:21:30,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:21:30,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 19:21:30,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:21:30,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:21:30,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:21:30,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:21:30,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 19:21:30,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:21:34,586 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:21:34,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355587589] [2020-10-14 19:21:34,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:21:34,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 19:21:34,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823463987] [2020-10-14 19:21:34,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 19:21:34,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:21:34,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 19:21:34,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:21:34,589 INFO L87 Difference]: Start difference. First operand 6767 states and 10214 transitions. Second operand 6 states. [2020-10-14 19:21:44,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:21:44,599 INFO L93 Difference]: Finished difference Result 14319 states and 22021 transitions. [2020-10-14 19:21:44,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:21:44,600 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 840 [2020-10-14 19:21:44,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:21:44,631 INFO L225 Difference]: With dead ends: 14319 [2020-10-14 19:21:44,631 INFO L226 Difference]: Without dead ends: 6771 [2020-10-14 19:21:44,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:21:44,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6771 states. [2020-10-14 19:21:44,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6771 to 6767. [2020-10-14 19:21:44,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6767 states. [2020-10-14 19:21:44,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6767 states to 6767 states and 10210 transitions. [2020-10-14 19:21:44,791 INFO L78 Accepts]: Start accepts. Automaton has 6767 states and 10210 transitions. Word has length 840 [2020-10-14 19:21:44,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:21:44,791 INFO L479 AbstractCegarLoop]: Abstraction has 6767 states and 10210 transitions. [2020-10-14 19:21:44,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 19:21:44,791 INFO L276 IsEmpty]: Start isEmpty. Operand 6767 states and 10210 transitions. [2020-10-14 19:21:44,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 872 [2020-10-14 19:21:44,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:21:44,813 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 19:21:44,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 19:21:44,813 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:21:44,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:21:44,814 INFO L82 PathProgramCache]: Analyzing trace with hash 260026223, now seen corresponding path program 1 times [2020-10-14 19:21:44,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:21:44,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668959177] [2020-10-14 19:21:44,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:21:44,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:21:44,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:44,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:45,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:46,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:50,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:21:50,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 891 [2020-10-14 19:21:50,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:21:50,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5150 [2020-10-14 19:21:50,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:21:50,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:21:50,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:21:50,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 19:21:50,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 19:21:50,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:21:50,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:21:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:21:50,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:50,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:21:50,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:21:50,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:21:50,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:21:50,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:21:50,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:21:50,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:21:50,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:21:50,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:21:50,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:21:50,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:21:50,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:21:50,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:50,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:21:50,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 19:21:50,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:21:50,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:21:50,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:21:50,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:21:50,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:21:50,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:21:50,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:21:50,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:21:50,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 19:21:50,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:21:50,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:50,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:21:50,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 19:21:50,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:21:50,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 19:21:50,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:21:50,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:21:50,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:21:50,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:21:50,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 19:21:50,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:21:50,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 19:21:50,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:21:50,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:50,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:21:50,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 19:21:50,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:21:50,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 19:21:50,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:21:50,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:21:50,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:21:50,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:21:50,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 19:21:50,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:21:50,985 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 19:21:50,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668959177] [2020-10-14 19:21:50,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:21:50,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:21:50,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706017440] [2020-10-14 19:21:50,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:21:50,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:21:50,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:21:50,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:21:50,992 INFO L87 Difference]: Start difference. First operand 6767 states and 10210 transitions. Second operand 8 states. [2020-10-14 19:22:05,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:22:05,232 INFO L93 Difference]: Finished difference Result 27343 states and 43478 transitions. [2020-10-14 19:22:05,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 19:22:05,233 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 871 [2020-10-14 19:22:05,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:22:05,316 INFO L225 Difference]: With dead ends: 27343 [2020-10-14 19:22:05,316 INFO L226 Difference]: Without dead ends: 20582 [2020-10-14 19:22:05,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 19:22:05,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20582 states. [2020-10-14 19:22:05,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20582 to 20514. [2020-10-14 19:22:05,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20514 states. [2020-10-14 19:22:05,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20514 states to 20514 states and 29234 transitions. [2020-10-14 19:22:05,822 INFO L78 Accepts]: Start accepts. Automaton has 20514 states and 29234 transitions. Word has length 871 [2020-10-14 19:22:05,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:22:05,823 INFO L479 AbstractCegarLoop]: Abstraction has 20514 states and 29234 transitions. [2020-10-14 19:22:05,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:22:05,823 INFO L276 IsEmpty]: Start isEmpty. Operand 20514 states and 29234 transitions. [2020-10-14 19:22:05,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 931 [2020-10-14 19:22:05,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:22:05,879 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:22:05,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 19:22:05,880 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:22:05,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:22:05,880 INFO L82 PathProgramCache]: Analyzing trace with hash 662889873, now seen corresponding path program 1 times [2020-10-14 19:22:05,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:22:05,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179259867] [2020-10-14 19:22:05,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:22:05,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:22:05,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:06,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:11,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:22:11,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 946 [2020-10-14 19:22:11,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:22:11,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5184 [2020-10-14 19:22:11,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:22:11,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:22:11,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 19:22:11,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-14 19:22:11,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 568 [2020-10-14 19:22:11,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:22:13,634 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2020-10-14 19:22:13,762 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 43 [2020-10-14 19:22:13,900 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 41 [2020-10-14 19:22:14,110 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 41 [2020-10-14 19:22:14,256 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 38 [2020-10-14 19:22:14,391 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 38 [2020-10-14 19:22:14,613 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 46 [2020-10-14 19:22:15,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:22:15,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:22:15,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:15,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:22:15,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:22:15,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:22:15,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:22:15,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:22:15,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:22:15,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:22:15,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:22:15,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:22:15,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:22:15,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:22:15,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:22:15,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:15,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:22:15,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 19:22:15,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:22:15,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 19:22:15,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:22:15,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:22:15,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:22:15,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:22:15,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 19:22:15,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:22:21,017 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 107 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:22:21,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179259867] [2020-10-14 19:22:21,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:22:21,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 19:22:21,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783965188] [2020-10-14 19:22:21,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 19:22:21,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:22:21,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 19:22:21,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2020-10-14 19:22:21,020 INFO L87 Difference]: Start difference. First operand 20514 states and 29234 transitions. Second operand 17 states. [2020-10-14 19:22:22,719 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-14 19:22:22,910 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-14 19:22:24,062 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-14 19:22:24,902 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 114 [2020-10-14 19:22:29,173 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-10-14 19:22:29,898 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 88 [2020-10-14 19:22:30,196 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 95 [2020-10-14 19:22:33,906 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 95 [2020-10-14 19:22:34,620 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 91 [2020-10-14 19:22:37,291 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 84 [2020-10-14 19:22:37,547 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 87 [2020-10-14 19:22:43,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:22:43,102 INFO L93 Difference]: Finished difference Result 41591 states and 59564 transitions. [2020-10-14 19:22:43,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 19:22:43,104 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 930 [2020-10-14 19:22:43,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:22:43,182 INFO L225 Difference]: With dead ends: 41591 [2020-10-14 19:22:43,183 INFO L226 Difference]: Without dead ends: 21083 [2020-10-14 19:22:43,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2020-10-14 19:22:43,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21083 states. [2020-10-14 19:22:43,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21083 to 21077. [2020-10-14 19:22:43,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21077 states. [2020-10-14 19:22:43,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21077 states to 21077 states and 29815 transitions. [2020-10-14 19:22:43,636 INFO L78 Accepts]: Start accepts. Automaton has 21077 states and 29815 transitions. Word has length 930 [2020-10-14 19:22:43,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:22:43,637 INFO L479 AbstractCegarLoop]: Abstraction has 21077 states and 29815 transitions. [2020-10-14 19:22:43,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 19:22:43,637 INFO L276 IsEmpty]: Start isEmpty. Operand 21077 states and 29815 transitions. [2020-10-14 19:22:43,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1013 [2020-10-14 19:22:43,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:22:43,692 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:22:43,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 19:22:43,692 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:22:43,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:22:43,693 INFO L82 PathProgramCache]: Analyzing trace with hash -162266570, now seen corresponding path program 1 times [2020-10-14 19:22:43,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:22:43,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1455523902] [2020-10-14 19:22:43,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:22:43,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:22:43,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:44,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:45,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:48,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:22:48,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1030 [2020-10-14 19:22:48,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:22:48,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-10-14 19:22:48,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:22:48,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:22:48,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:22:48,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:22:48,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 19:22:48,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:22:49,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:22:49,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:22:49,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:49,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:22:49,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:22:49,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:22:49,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:22:49,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:22:49,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:22:49,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:22:49,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:22:49,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:22:49,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:22:49,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:22:49,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:22:49,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:49,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:49,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:22:49,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 19:22:49,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:22:49,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-14 19:22:49,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:22:49,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:22:49,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:22:49,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:22:49,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 19:22:49,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:22:49,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-14 19:22:49,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:22:49,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:49,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:22:49,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 19:22:49,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:22:49,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 19:22:49,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:22:49,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:22:49,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:22:49,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:22:49,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 19:22:49,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:22:49,924 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 249 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 19:22:49,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1455523902] [2020-10-14 19:22:49,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:22:49,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:22:49,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049168302] [2020-10-14 19:22:49,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:22:49,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:22:49,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:22:49,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:22:49,927 INFO L87 Difference]: Start difference. First operand 21077 states and 29815 transitions. Second operand 7 states. [2020-10-14 19:23:00,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:23:00,587 INFO L93 Difference]: Finished difference Result 52760 states and 79407 transitions. [2020-10-14 19:23:00,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:23:00,592 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1012 [2020-10-14 19:23:00,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:23:00,715 INFO L225 Difference]: With dead ends: 52760 [2020-10-14 19:23:00,715 INFO L226 Difference]: Without dead ends: 31689 [2020-10-14 19:23:00,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:23:00,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31689 states. [2020-10-14 19:23:01,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31689 to 30531. [2020-10-14 19:23:01,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30531 states. [2020-10-14 19:23:01,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30531 states to 30531 states and 42223 transitions. [2020-10-14 19:23:01,492 INFO L78 Accepts]: Start accepts. Automaton has 30531 states and 42223 transitions. Word has length 1012 [2020-10-14 19:23:01,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:23:01,492 INFO L479 AbstractCegarLoop]: Abstraction has 30531 states and 42223 transitions. [2020-10-14 19:23:01,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:23:01,493 INFO L276 IsEmpty]: Start isEmpty. Operand 30531 states and 42223 transitions. [2020-10-14 19:23:01,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1141 [2020-10-14 19:23:01,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:23:01,553 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 19:23:01,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 19:23:01,553 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:23:01,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:23:01,554 INFO L82 PathProgramCache]: Analyzing trace with hash 690809848, now seen corresponding path program 1 times [2020-10-14 19:23:01,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:23:01,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [368824767] [2020-10-14 19:23:01,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:23:01,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:23:01,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:23:03,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:23:03,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:23:06,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:23:06,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1160 [2020-10-14 19:23:06,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:23:06,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5080 [2020-10-14 19:23:06,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:23:06,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:23:06,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 19:23:06,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 332 [2020-10-14 19:23:06,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 651 [2020-10-14 19:23:06,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:23:08,149 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2020-10-14 19:23:08,267 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2020-10-14 19:23:09,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:23:09,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:23:09,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:23:09,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:23:09,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:23:09,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:23:09,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:23:09,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:23:09,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:23:09,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:23:09,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:23:09,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:23:09,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:23:09,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:23:09,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:23:09,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:23:09,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:23:09,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 19:23:09,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:23:09,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:23:09,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:23:09,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:23:09,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:23:09,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:23:09,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:23:09,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:23:09,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 19:23:09,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:23:09,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:23:09,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:23:09,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-14 19:23:09,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:23:09,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-10-14 19:23:09,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:23:09,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:23:09,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:23:09,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:23:09,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 307 [2020-10-14 19:23:09,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:23:09,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 19:23:09,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:23:09,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:23:09,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:23:09,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 19:23:09,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:23:09,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 19:23:09,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:23:09,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:23:09,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:23:09,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:23:09,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 19:23:09,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:23:15,982 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 312 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 19:23:15,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [368824767] [2020-10-14 19:23:15,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:23:15,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 19:23:15,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700936919] [2020-10-14 19:23:15,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 19:23:15,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:23:15,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 19:23:15,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2020-10-14 19:23:15,985 INFO L87 Difference]: Start difference. First operand 30531 states and 42223 transitions. Second operand 17 states. [2020-10-14 19:23:21,316 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 89 [2020-10-14 19:23:21,610 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 97 [2020-10-14 19:23:24,336 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 96 [2020-10-14 19:23:28,015 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2020-10-14 19:23:28,281 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 95 [2020-10-14 19:23:29,893 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 94 [2020-10-14 19:23:33,060 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 93 [2020-10-14 19:23:35,188 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2020-10-14 19:23:35,454 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2020-10-14 19:23:36,730 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 90 [2020-10-14 19:23:38,778 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2020-10-14 19:23:39,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:23:39,136 INFO L93 Difference]: Finished difference Result 61699 states and 85723 transitions. [2020-10-14 19:23:39,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 19:23:39,137 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 1140 [2020-10-14 19:23:39,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:23:39,222 INFO L225 Difference]: With dead ends: 61699 [2020-10-14 19:23:39,223 INFO L226 Difference]: Without dead ends: 31174 [2020-10-14 19:23:39,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=143, Invalid=669, Unknown=0, NotChecked=0, Total=812 [2020-10-14 19:23:39,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31174 states. [2020-10-14 19:23:39,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31174 to 31170. [2020-10-14 19:23:39,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31170 states. [2020-10-14 19:23:39,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31170 states to 31170 states and 42873 transitions. [2020-10-14 19:23:39,814 INFO L78 Accepts]: Start accepts. Automaton has 31170 states and 42873 transitions. Word has length 1140 [2020-10-14 19:23:39,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:23:39,816 INFO L479 AbstractCegarLoop]: Abstraction has 31170 states and 42873 transitions. [2020-10-14 19:23:39,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 19:23:39,816 INFO L276 IsEmpty]: Start isEmpty. Operand 31170 states and 42873 transitions. [2020-10-14 19:23:39,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1200 [2020-10-14 19:23:39,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:23:39,879 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 19:23:39,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 19:23:39,879 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:23:39,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:23:39,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1348452764, now seen corresponding path program 1 times [2020-10-14 19:23:39,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:23:39,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034189691] [2020-10-14 19:23:39,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:23:39,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:23:39,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:23:40,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:23:40,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:23:41,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking...