/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/Problem17_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:33:45,267 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:33:45,270 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:33:45,296 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:33:45,297 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:33:45,298 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:33:45,299 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:33:45,302 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:33:45,304 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:33:45,305 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:33:45,306 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:33:45,307 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:33:45,307 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:33:45,309 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:33:45,310 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:33:45,311 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:33:45,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:33:45,315 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:33:45,321 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:33:45,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:33:45,326 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:33:45,328 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:33:45,332 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:33:45,334 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:33:45,341 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:33:45,342 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:33:45,343 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:33:45,346 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:33:45,347 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:33:45,350 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:33:45,350 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:33:45,352 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:33:45,353 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:33:45,354 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:33:45,356 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:33:45,357 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:33:45,358 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:33:45,358 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:33:45,358 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:33:45,359 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:33:45,361 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:33:45,362 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 22:33:45,423 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:33:45,424 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:33:45,428 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:33:45,429 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:33:45,429 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:33:45,429 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:33:45,429 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:33:45,430 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:33:45,430 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:33:45,430 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:33:45,430 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:33:45,430 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:33:45,431 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:33:45,431 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:33:45,431 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:33:45,431 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:33:45,431 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:33:45,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:33:45,432 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:33:45,432 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:33:45,432 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:33:45,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:33:45,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:33:45,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:33:45,433 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:33:45,433 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:33:45,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:33:45,434 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:33:45,434 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:33:45,434 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 22:33:45,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:33:45,787 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:33:45,791 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:33:45,793 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:33:45,794 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:33:45,795 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label39.c [2020-10-14 22:33:45,876 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63aeb2e1a/6198d99c7d074792a59aff4d42a0fc76/FLAGa22273d16 [2020-10-14 22:33:46,646 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:33:46,647 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label39.c [2020-10-14 22:33:46,678 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63aeb2e1a/6198d99c7d074792a59aff4d42a0fc76/FLAGa22273d16 [2020-10-14 22:33:46,731 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63aeb2e1a/6198d99c7d074792a59aff4d42a0fc76 [2020-10-14 22:33:46,742 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:33:46,744 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:33:46,746 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:33:46,746 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:33:46,751 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:33:46,752 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:33:46" (1/1) ... [2020-10-14 22:33:46,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dfcebea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:33:46, skipping insertion in model container [2020-10-14 22:33:46,757 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:33:46" (1/1) ... [2020-10-14 22:33:46,766 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:33:46,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:33:48,260 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:33:48,267 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:33:48,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:33:48,759 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:33:48,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:33:48 WrapperNode [2020-10-14 22:33:48,769 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:33:48,770 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:33:48,771 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:33:48,771 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:33:48,790 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:33:48" (1/1) ... [2020-10-14 22:33:48,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:33:48" (1/1) ... [2020-10-14 22:33:48,880 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:33:48" (1/1) ... [2020-10-14 22:33:48,881 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:33:48" (1/1) ... [2020-10-14 22:33:48,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:33:48" (1/1) ... [2020-10-14 22:33:49,037 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:33:48" (1/1) ... [2020-10-14 22:33:49,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:33:48" (1/1) ... [2020-10-14 22:33:49,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:33:49,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:33:49,146 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:33:49,146 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:33:49,148 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:33:48" (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 22:33:49,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:33:49,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:33:49,248 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:33:49,249 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:33:49,249 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:33:49,249 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:33:49,250 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:33:49,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:33:49,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:33:49,251 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:33:49,252 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:33:49,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:33:49,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:33:59,002 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:33:59,002 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:33:59,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:33:59 BoogieIcfgContainer [2020-10-14 22:33:59,014 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:33:59,016 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:33:59,016 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:33:59,021 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:33:59,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:33:46" (1/3) ... [2020-10-14 22:33:59,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@196e53dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:33:59, skipping insertion in model container [2020-10-14 22:33:59,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:33:48" (2/3) ... [2020-10-14 22:33:59,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@196e53dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:33:59, skipping insertion in model container [2020-10-14 22:33:59,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:33:59" (3/3) ... [2020-10-14 22:33:59,027 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label39.c [2020-10-14 22:33:59,041 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:33:59,053 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:33:59,073 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:33:59,114 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:33:59,114 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:33:59,114 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:33:59,114 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:33:59,115 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:33:59,115 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:33:59,115 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:33:59,115 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:33:59,156 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 22:33:59,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 22:33:59,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:33:59,170 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] [2020-10-14 22:33:59,171 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:33:59,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:33:59,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1747259231, now seen corresponding path program 1 times [2020-10-14 22:33:59,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:33:59,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951461956] [2020-10-14 22:33:59,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:33:59,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:59,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:00,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:34:00,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 22:34:00,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:34:00,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 677 [2020-10-14 22:34:00,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:34:00,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:34:00,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:34:00,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:34:00,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 22:34:00,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:34:00,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:34:00,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:34:00,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:00,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:34:00,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:34:00,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:34:00,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 22:34:00,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:34:00,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:34:00,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:34:00,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:34:00,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:34:00,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:34:00,462 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 22:34:00,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951461956] [2020-10-14 22:34:00,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:34:00,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 22:34:00,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759885659] [2020-10-14 22:34:00,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:34:00,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:34:00,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:34:00,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:34:00,497 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 5 states. [2020-10-14 22:34:14,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:34:14,884 INFO L93 Difference]: Finished difference Result 2169 states and 4016 transitions. [2020-10-14 22:34:14,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 22:34:14,887 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-10-14 22:34:14,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:34:14,933 INFO L225 Difference]: With dead ends: 2169 [2020-10-14 22:34:14,933 INFO L226 Difference]: Without dead ends: 1472 [2020-10-14 22:34:14,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:34:14,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2020-10-14 22:34:15,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1443. [2020-10-14 22:34:15,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1443 states. [2020-10-14 22:34:15,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 2111 transitions. [2020-10-14 22:34:15,121 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 2111 transitions. Word has length 69 [2020-10-14 22:34:15,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:34:15,122 INFO L479 AbstractCegarLoop]: Abstraction has 1443 states and 2111 transitions. [2020-10-14 22:34:15,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:34:15,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 2111 transitions. [2020-10-14 22:34:15,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-14 22:34:15,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:34:15,130 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:34:15,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:34:15,131 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:34:15,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:34:15,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1044902793, now seen corresponding path program 1 times [2020-10-14 22:34:15,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:34:15,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [869461561] [2020-10-14 22:34:15,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:34:15,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:34:15,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:15,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:15,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:17,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:18,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:34:18,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 22:34:18,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:34:18,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2880 [2020-10-14 22:34:18,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:34:18,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:34:18,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:34:18,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:34:18,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 22:34:18,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:34:18,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:34:18,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:34:18,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:18,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:34:18,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:34:18,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:34:18,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 22:34:18,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:34:18,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:34:18,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:34:18,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:34:18,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:34:18,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:34:18,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:34:18,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:34:18,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:18,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:18,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:34:18,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:34:18,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:34:18,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-14 22:34:18,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:34:18,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:34:18,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:34:18,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:34:18,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:34:18,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:34:18,721 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 22:34:18,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [869461561] [2020-10-14 22:34:18,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:34:18,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:34:18,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754319344] [2020-10-14 22:34:18,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 22:34:18,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:34:18,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 22:34:18,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:34:18,727 INFO L87 Difference]: Start difference. First operand 1443 states and 2111 transitions. Second operand 6 states. [2020-10-14 22:34:34,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:34:34,111 INFO L93 Difference]: Finished difference Result 3808 states and 5668 transitions. [2020-10-14 22:34:34,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 22:34:34,119 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2020-10-14 22:34:34,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:34:34,139 INFO L225 Difference]: With dead ends: 3808 [2020-10-14 22:34:34,139 INFO L226 Difference]: Without dead ends: 2371 [2020-10-14 22:34:34,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:34:34,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2371 states. [2020-10-14 22:34:34,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2371 to 1930. [2020-10-14 22:34:34,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1930 states. [2020-10-14 22:34:34,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 2595 transitions. [2020-10-14 22:34:34,329 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 2595 transitions. Word has length 140 [2020-10-14 22:34:34,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:34:34,334 INFO L479 AbstractCegarLoop]: Abstraction has 1930 states and 2595 transitions. [2020-10-14 22:34:34,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 22:34:34,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 2595 transitions. [2020-10-14 22:34:34,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-14 22:34:34,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:34:34,349 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:34:34,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:34:34,350 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:34:34,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:34:34,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1036271817, now seen corresponding path program 1 times [2020-10-14 22:34:34,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:34:34,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014055640] [2020-10-14 22:34:34,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:34:34,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:34:34,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:34,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:35,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:38,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:34:38,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 22:34:38,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:34:38,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4543 [2020-10-14 22:34:38,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:34:38,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:34:38,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:34:38,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:34:38,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 22:34:38,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:34:39,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:34:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:34:39,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:39,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:34:39,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:34:39,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:34:39,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 22:34:39,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:34:39,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:34:39,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:34:39,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:34:39,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:34:39,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:34:39,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:34:39,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:34:39,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:39,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:34:39,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 22:34:39,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:34:39,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-14 22:34:39,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:34:39,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:34:39,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:34:39,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:34:39,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 22:34:39,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:34:39,614 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 37 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:34:39,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014055640] [2020-10-14 22:34:39,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:34:39,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:34:39,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959810189] [2020-10-14 22:34:39,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:34:39,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:34:39,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:34:39,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:34:39,620 INFO L87 Difference]: Start difference. First operand 1930 states and 2595 transitions. Second operand 8 states. [2020-10-14 22:34:52,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:34:52,021 INFO L93 Difference]: Finished difference Result 5294 states and 7268 transitions. [2020-10-14 22:34:52,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:34:52,023 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 143 [2020-10-14 22:34:52,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:34:52,044 INFO L225 Difference]: With dead ends: 5294 [2020-10-14 22:34:52,044 INFO L226 Difference]: Without dead ends: 3327 [2020-10-14 22:34:52,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:34:52,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3327 states. [2020-10-14 22:34:52,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3327 to 3288. [2020-10-14 22:34:52,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3288 states. [2020-10-14 22:34:52,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3288 states to 3288 states and 4381 transitions. [2020-10-14 22:34:52,134 INFO L78 Accepts]: Start accepts. Automaton has 3288 states and 4381 transitions. Word has length 143 [2020-10-14 22:34:52,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:34:52,134 INFO L479 AbstractCegarLoop]: Abstraction has 3288 states and 4381 transitions. [2020-10-14 22:34:52,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:34:52,134 INFO L276 IsEmpty]: Start isEmpty. Operand 3288 states and 4381 transitions. [2020-10-14 22:34:52,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-14 22:34:52,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:34:52,137 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:34:52,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:34:52,137 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:34:52,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:34:52,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1779459607, now seen corresponding path program 1 times [2020-10-14 22:34:52,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:34:52,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116949856] [2020-10-14 22:34:52,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:34:52,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:34:52,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:52,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:34:52,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 22:34:52,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:34:52,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-10-14 22:34:52,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:34:52,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:34:52,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:34:52,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:34:52,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 22:34:52,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:34:52,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:34:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:34:52,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:52,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:34:52,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:34:52,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:34:52,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:34:52,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:34:52,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:34:52,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:34:52,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:34:52,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:34:52,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:34:52,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:34:52,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:34:52,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:52,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:34:52,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:34:52,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:34:52,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 22:34:52,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:34:52,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:34:52,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:34:52,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:34:52,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:34:52,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 51 [2020-10-14 22:34:52,796 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:34:52,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116949856] [2020-10-14 22:34:52,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:34:52,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 22:34:52,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071466472] [2020-10-14 22:34:52,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 22:34:52,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:34:52,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 22:34:52,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:34:52,798 INFO L87 Difference]: Start difference. First operand 3288 states and 4381 transitions. Second operand 6 states. [2020-10-14 22:35:10,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:35:10,552 INFO L93 Difference]: Finished difference Result 8367 states and 11607 transitions. [2020-10-14 22:35:10,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:35:10,554 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 156 [2020-10-14 22:35:10,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:35:10,588 INFO L225 Difference]: With dead ends: 8367 [2020-10-14 22:35:10,589 INFO L226 Difference]: Without dead ends: 5518 [2020-10-14 22:35:10,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:35:10,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5518 states. [2020-10-14 22:35:10,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5518 to 5503. [2020-10-14 22:35:10,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5503 states. [2020-10-14 22:35:10,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5503 states to 5503 states and 7580 transitions. [2020-10-14 22:35:10,800 INFO L78 Accepts]: Start accepts. Automaton has 5503 states and 7580 transitions. Word has length 156 [2020-10-14 22:35:10,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:35:10,802 INFO L479 AbstractCegarLoop]: Abstraction has 5503 states and 7580 transitions. [2020-10-14 22:35:10,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 22:35:10,802 INFO L276 IsEmpty]: Start isEmpty. Operand 5503 states and 7580 transitions. [2020-10-14 22:35:10,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-14 22:35:10,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:35:10,811 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, 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] [2020-10-14 22:35:10,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:35:10,811 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:35:10,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:35:10,812 INFO L82 PathProgramCache]: Analyzing trace with hash 728269513, now seen corresponding path program 1 times [2020-10-14 22:35:10,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:35:10,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1434151535] [2020-10-14 22:35:10,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:35:10,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:35:10,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:11,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:11,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:14,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:15,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:35:15,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-14 22:35:15,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:35:15,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-10-14 22:35:15,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:35:15,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:35:15,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 22:35:15,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:35:15,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 237 [2020-10-14 22:35:15,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:35:16,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:35:16,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:35:16,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:16,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:35:16,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:35:16,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:35:16,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:35:16,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:35:16,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:35:16,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:35:16,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:35:16,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:35:16,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:35:16,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:35:16,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:35:16,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:16,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:35:16,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:35:16,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:35:16,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-14 22:35:16,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:35:16,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:35:16,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:35:16,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:35:16,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:35:16,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:35:16,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:35:16,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:35:16,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:16,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:16,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:35:16,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:35:16,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:35:16,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-10-14 22:35:16,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:35:16,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:35:16,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:35:16,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:35:16,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 22:35:16,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:35:17,046 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-14 22:35:17,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1434151535] [2020-10-14 22:35:17,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:35:17,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:35:17,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025859434] [2020-10-14 22:35:17,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 22:35:17,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:35:17,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 22:35:17,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-14 22:35:17,051 INFO L87 Difference]: Start difference. First operand 5503 states and 7580 transitions. Second operand 9 states. [2020-10-14 22:35:43,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:35:43,565 INFO L93 Difference]: Finished difference Result 12930 states and 19063 transitions. [2020-10-14 22:35:43,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 22:35:43,567 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 231 [2020-10-14 22:35:43,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:35:43,604 INFO L225 Difference]: With dead ends: 12930 [2020-10-14 22:35:43,604 INFO L226 Difference]: Without dead ends: 7866 [2020-10-14 22:35:43,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2020-10-14 22:35:43,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7866 states. [2020-10-14 22:35:43,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7866 to 6933. [2020-10-14 22:35:43,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6933 states. [2020-10-14 22:35:43,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6933 states to 6933 states and 9441 transitions. [2020-10-14 22:35:43,822 INFO L78 Accepts]: Start accepts. Automaton has 6933 states and 9441 transitions. Word has length 231 [2020-10-14 22:35:43,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:35:43,823 INFO L479 AbstractCegarLoop]: Abstraction has 6933 states and 9441 transitions. [2020-10-14 22:35:43,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 22:35:43,824 INFO L276 IsEmpty]: Start isEmpty. Operand 6933 states and 9441 transitions. [2020-10-14 22:35:43,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-14 22:35:43,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:35:43,830 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, 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] [2020-10-14 22:35:43,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:35:43,831 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:35:43,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:35:43,831 INFO L82 PathProgramCache]: Analyzing trace with hash 887191821, now seen corresponding path program 1 times [2020-10-14 22:35:43,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:35:43,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [93139566] [2020-10-14 22:35:43,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:35:43,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:35:44,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:44,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:44,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:45,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:35:45,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-14 22:35:45,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:35:45,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1824 [2020-10-14 22:35:45,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:35:45,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:35:45,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:35:45,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:35:45,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 22:35:45,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:35:45,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:35:45,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:35:45,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:45,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:35:45,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:35:45,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:35:45,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:35:45,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:35:45,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:35:45,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:35:45,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:35:45,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:35:45,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:35:45,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:35:45,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:35:45,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:46,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:35:46,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:35:46,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:35:46,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 22:35:46,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:35:46,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:35:46,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:35:46,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:35:46,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:35:46,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 36 [2020-10-14 22:35:46,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:35:46,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:35:46,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:46,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:35:46,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 22:35:46,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:35:46,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 22:35:46,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:35:46,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:35:46,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:35:46,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:35:46,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 22:35:46,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:35:46,322 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 198 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:35:46,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [93139566] [2020-10-14 22:35:46,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:35:46,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:35:46,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034524984] [2020-10-14 22:35:46,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:35:46,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:35:46,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:35:46,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:35:46,326 INFO L87 Difference]: Start difference. First operand 6933 states and 9441 transitions. Second operand 7 states. [2020-10-14 22:36:00,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:36:00,076 INFO L93 Difference]: Finished difference Result 17603 states and 25495 transitions. [2020-10-14 22:36:00,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:36:00,078 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 233 [2020-10-14 22:36:00,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:36:00,131 INFO L225 Difference]: With dead ends: 17603 [2020-10-14 22:36:00,131 INFO L226 Difference]: Without dead ends: 11124 [2020-10-14 22:36:00,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:36:00,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11124 states. [2020-10-14 22:36:00,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11124 to 11023. [2020-10-14 22:36:00,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11023 states. [2020-10-14 22:36:00,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11023 states to 11023 states and 14625 transitions. [2020-10-14 22:36:00,425 INFO L78 Accepts]: Start accepts. Automaton has 11023 states and 14625 transitions. Word has length 233 [2020-10-14 22:36:00,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:36:00,426 INFO L479 AbstractCegarLoop]: Abstraction has 11023 states and 14625 transitions. [2020-10-14 22:36:00,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:36:00,426 INFO L276 IsEmpty]: Start isEmpty. Operand 11023 states and 14625 transitions. [2020-10-14 22:36:00,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-14 22:36:00,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:36:00,435 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, 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] [2020-10-14 22:36:00,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:36:00,435 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:36:00,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:36:00,436 INFO L82 PathProgramCache]: Analyzing trace with hash -133936146, now seen corresponding path program 1 times [2020-10-14 22:36:00,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:36:00,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [117915793] [2020-10-14 22:36:00,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:36:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:00,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:00,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:00,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:04,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:05,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:05,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-14 22:36:05,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:36:05,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 22:36:05,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:05,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:05,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:36:05,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:36:05,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 22:36:05,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:36:05,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:36:05,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:05,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:05,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:05,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:36:05,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:05,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:36:05,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:05,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:05,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:36:05,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:36:05,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:36:05,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:36:05,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:36:05,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:05,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:05,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:05,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 22:36:05,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:05,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-14 22:36:05,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:05,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:05,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:36:05,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:36:05,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:36:05,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:36:06,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 22:36:06,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:06,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:06,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:06,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:36:06,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:06,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 22:36:06,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:06,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:06,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:36:06,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 22:36:06,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:36:06,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:36:06,414 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 124 proven. 66 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 22:36:06,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [117915793] [2020-10-14 22:36:06,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:36:06,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:36:06,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859720433] [2020-10-14 22:36:06,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:36:06,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:36:06,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:36:06,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:36:06,417 INFO L87 Difference]: Start difference. First operand 11023 states and 14625 transitions. Second operand 7 states. [2020-10-14 22:36:21,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:36:21,320 INFO L93 Difference]: Finished difference Result 21805 states and 30213 transitions. [2020-10-14 22:36:21,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:36:21,323 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 249 [2020-10-14 22:36:21,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:36:21,392 INFO L225 Difference]: With dead ends: 21805 [2020-10-14 22:36:21,392 INFO L226 Difference]: Without dead ends: 11221 [2020-10-14 22:36:21,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:36:21,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11221 states. [2020-10-14 22:36:21,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11221 to 11035. [2020-10-14 22:36:21,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11035 states. [2020-10-14 22:36:21,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11035 states to 11035 states and 14642 transitions. [2020-10-14 22:36:21,742 INFO L78 Accepts]: Start accepts. Automaton has 11035 states and 14642 transitions. Word has length 249 [2020-10-14 22:36:21,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:36:21,743 INFO L479 AbstractCegarLoop]: Abstraction has 11035 states and 14642 transitions. [2020-10-14 22:36:21,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:36:21,743 INFO L276 IsEmpty]: Start isEmpty. Operand 11035 states and 14642 transitions. [2020-10-14 22:36:21,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-10-14 22:36:21,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:36:21,751 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-14 22:36:21,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:36:21,752 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:36:21,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:36:21,752 INFO L82 PathProgramCache]: Analyzing trace with hash -41307548, now seen corresponding path program 1 times [2020-10-14 22:36:21,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:36:21,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966935710] [2020-10-14 22:36:21,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:36:21,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:21,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:22,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:23,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:23,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:26,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:26,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 350 [2020-10-14 22:36:26,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:36:26,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 22:36:26,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:26,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:26,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:36:26,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:36:26,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 22:36:26,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:36:26,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:36:26,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:26,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:26,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:26,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:36:26,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:26,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:36:26,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:26,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:26,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:36:26,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:36:26,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:36:26,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:36:27,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:36:27,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:27,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:27,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:27,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:36:27,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:27,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 22:36:27,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:27,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:27,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:36:27,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:36:27,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:36:27,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:36:27,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:36:27,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:27,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:27,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:27,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 22:36:27,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:27,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-14 22:36:27,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:27,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:27,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:36:27,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:36:27,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:36:27,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:36:27,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-14 22:36:27,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:27,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:27,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:27,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:36:27,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:27,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 22:36:27,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:27,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:27,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:36:27,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 22:36:27,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:36:27,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:36:27,864 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 274 proven. 70 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-14 22:36:27,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966935710] [2020-10-14 22:36:27,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:36:27,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:36:27,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7941676] [2020-10-14 22:36:27,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:36:27,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:36:27,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:36:27,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:36:27,866 INFO L87 Difference]: Start difference. First operand 11035 states and 14642 transitions. Second operand 7 states. [2020-10-14 22:36:48,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:36:48,139 INFO L93 Difference]: Finished difference Result 25588 states and 35631 transitions. [2020-10-14 22:36:48,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:36:48,142 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 336 [2020-10-14 22:36:48,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:36:48,213 INFO L225 Difference]: With dead ends: 25588 [2020-10-14 22:36:48,213 INFO L226 Difference]: Without dead ends: 14997 [2020-10-14 22:36:48,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:36:48,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14997 states. [2020-10-14 22:36:48,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14997 to 13523. [2020-10-14 22:36:48,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13523 states. [2020-10-14 22:36:48,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13523 states to 13523 states and 18026 transitions. [2020-10-14 22:36:48,633 INFO L78 Accepts]: Start accepts. Automaton has 13523 states and 18026 transitions. Word has length 336 [2020-10-14 22:36:48,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:36:48,634 INFO L479 AbstractCegarLoop]: Abstraction has 13523 states and 18026 transitions. [2020-10-14 22:36:48,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:36:48,634 INFO L276 IsEmpty]: Start isEmpty. Operand 13523 states and 18026 transitions. [2020-10-14 22:36:48,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2020-10-14 22:36:48,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:36:48,643 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-14 22:36:48,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:36:48,643 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:36:48,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:36:48,644 INFO L82 PathProgramCache]: Analyzing trace with hash -14035900, now seen corresponding path program 1 times [2020-10-14 22:36:48,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:36:48,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617025659] [2020-10-14 22:36:48,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:36:48,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:48,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:48,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:49,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:49,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:50,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:53,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:53,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 374 [2020-10-14 22:36:53,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:36:53,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 22:36:53,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:53,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:53,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:36:53,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:36:53,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-14 22:36:53,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:36:53,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:36:53,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:53,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:53,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:53,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:36:53,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:53,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:36:53,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:53,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:53,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:36:53,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:36:53,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:36:53,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:36:53,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:36:53,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:53,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:53,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:53,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:36:53,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:53,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 22:36:53,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:53,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:53,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:36:53,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:36:53,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:36:53,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:36:54,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:36:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:54,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:54,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:54,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 22:36:54,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:54,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-14 22:36:54,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:54,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:54,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:36:54,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:36:54,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 22:36:54,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:36:54,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-10-14 22:36:54,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:54,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:54,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:54,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:36:54,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:54,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 22:36:54,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:54,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:54,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:36:54,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 22:36:54,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:36:54,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:36:54,761 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 191 proven. 225 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 22:36:54,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617025659] [2020-10-14 22:36:54,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:36:54,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 22:36:54,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412338508] [2020-10-14 22:36:54,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 22:36:54,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:36:54,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 22:36:54,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:36:54,764 INFO L87 Difference]: Start difference. First operand 13523 states and 18026 transitions. Second operand 10 states. [2020-10-14 22:37:03,122 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-10-14 22:37:09,275 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2020-10-14 22:37:21,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:37:21,843 INFO L93 Difference]: Finished difference Result 27500 states and 37085 transitions. [2020-10-14 22:37:21,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 22:37:21,845 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 360 [2020-10-14 22:37:21,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:37:21,892 INFO L225 Difference]: With dead ends: 27500 [2020-10-14 22:37:21,893 INFO L226 Difference]: Without dead ends: 14423 [2020-10-14 22:37:21,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=159, Invalid=491, Unknown=0, NotChecked=0, Total=650 [2020-10-14 22:37:21,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14423 states. [2020-10-14 22:37:22,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14423 to 14140. [2020-10-14 22:37:22,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14140 states. [2020-10-14 22:37:22,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14140 states to 14140 states and 18829 transitions. [2020-10-14 22:37:22,269 INFO L78 Accepts]: Start accepts. Automaton has 14140 states and 18829 transitions. Word has length 360 [2020-10-14 22:37:22,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:37:22,270 INFO L479 AbstractCegarLoop]: Abstraction has 14140 states and 18829 transitions. [2020-10-14 22:37:22,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 22:37:22,270 INFO L276 IsEmpty]: Start isEmpty. Operand 14140 states and 18829 transitions. [2020-10-14 22:37:22,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2020-10-14 22:37:22,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:37:22,286 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 22:37:22,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 22:37:22,286 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:37:22,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:37:22,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1139119819, now seen corresponding path program 1 times [2020-10-14 22:37:22,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:37:22,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490425297] [2020-10-14 22:37:22,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:37:22,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:22,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:22,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:22,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:23,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:27,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:27,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 438 [2020-10-14 22:37:27,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:37:27,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 22:37:27,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:27,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:27,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 22:37:27,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:37:27,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 292 [2020-10-14 22:37:27,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:37:27,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:37:27,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:27,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:27,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:27,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:37:27,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:37:27,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:37:27,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:27,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:27,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:37:27,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:37:27,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:37:27,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:37:27,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:37:27,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:27,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:27,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:27,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:37:27,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:37:27,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 22:37:27,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:27,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:27,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:37:27,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:37:27,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:37:27,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:37:27,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:37:27,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:27,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:27,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:27,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:37:27,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:37:27,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 22:37:27,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:27,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:27,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:37:27,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:37:27,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 22:37:27,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:37:27,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:37:27,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:27,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:28,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:28,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 22:37:28,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:37:28,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-14 22:37:28,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:28,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:28,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:37:28,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:37:28,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:37:28,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:37:28,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2020-10-14 22:37:28,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:28,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:28,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:28,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:37:28,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:37:28,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 22:37:28,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:28,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:28,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:37:28,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 22:37:28,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:37:28,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:37:28,481 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 343 proven. 363 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 22:37:28,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [490425297] [2020-10-14 22:37:28,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:37:28,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 22:37:28,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348929991] [2020-10-14 22:37:28,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 22:37:28,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:37:28,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 22:37:28,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:37:28,490 INFO L87 Difference]: Start difference. First operand 14140 states and 18829 transitions. Second operand 11 states.