/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:30:44,685 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:30:44,689 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:30:44,735 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:30:44,735 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:30:44,743 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:30:44,745 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:30:44,749 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:30:44,752 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:30:44,755 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:30:44,756 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:30:44,757 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:30:44,757 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:30:44,760 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:30:44,762 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:30:44,763 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:30:44,765 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:30:44,766 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:30:44,767 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:30:44,776 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:30:44,778 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:30:44,780 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:30:44,781 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:30:44,781 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:30:44,797 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:30:44,797 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:30:44,797 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:30:44,800 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:30:44,801 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:30:44,802 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:30:44,802 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:30:44,803 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:30:44,807 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:30:44,808 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:30:44,812 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:30:44,812 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:30:44,812 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:30:44,813 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:30:44,813 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:30:44,814 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:30:44,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:30:44,817 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 09:30:44,860 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:30:44,861 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:30:44,863 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:30:44,863 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:30:44,863 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:30:44,863 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:30:44,863 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:30:44,864 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:30:44,864 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:30:44,864 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:30:44,865 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:30:44,865 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:30:44,865 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:30:44,865 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:30:44,865 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:30:44,865 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:30:44,866 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:30:44,866 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:30:44,867 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:30:44,868 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:30:44,868 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:30:44,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:30:44,868 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:30:44,868 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:30:44,868 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:30:44,869 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:30:44,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:30:44,869 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:30:44,869 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:30:44,869 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 09:30:45,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:30:45,181 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:30:45,184 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:30:45,186 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:30:45,186 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:30:45,187 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label19.c [2020-10-13 09:30:45,268 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/658199072/c2516610d4c7470ca3b62481adb5be4e/FLAGd4bfc881c [2020-10-13 09:30:46,021 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:30:46,022 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label19.c [2020-10-13 09:30:46,053 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/658199072/c2516610d4c7470ca3b62481adb5be4e/FLAGd4bfc881c [2020-10-13 09:30:46,264 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/658199072/c2516610d4c7470ca3b62481adb5be4e [2020-10-13 09:30:46,278 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:30:46,280 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:30:46,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:30:46,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:30:46,290 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:30:46,291 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:30:46" (1/1) ... [2020-10-13 09:30:46,296 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59c286c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:46, skipping insertion in model container [2020-10-13 09:30:46,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:30:46" (1/1) ... [2020-10-13 09:30:46,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:30:46,430 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:30:47,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:30:47,621 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:30:48,043 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:30:48,069 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:30:48,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:48 WrapperNode [2020-10-13 09:30:48,069 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:30:48,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:30:48,071 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:30:48,071 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:30:48,088 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:48" (1/1) ... [2020-10-13 09:30:48,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:48" (1/1) ... [2020-10-13 09:30:48,145 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:48" (1/1) ... [2020-10-13 09:30:48,146 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:48" (1/1) ... [2020-10-13 09:30:48,276 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:48" (1/1) ... [2020-10-13 09:30:48,300 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:48" (1/1) ... [2020-10-13 09:30:48,335 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:48" (1/1) ... [2020-10-13 09:30:48,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:30:48,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:30:48,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:30:48,383 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:30:48,385 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:48" (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 [2020-10-13 09:30:48,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:30:48,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:30:48,468 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:30:48,468 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:30:48,469 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:30:48,469 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:30:48,469 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:30:48,470 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:30:48,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:30:48,471 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:30:48,471 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:30:48,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:30:48,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:30:57,391 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:30:57,391 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:30:57,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:30:57 BoogieIcfgContainer [2020-10-13 09:30:57,400 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:30:57,455 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:30:57,455 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:30:57,467 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:30:57,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:30:46" (1/3) ... [2020-10-13 09:30:57,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e5c857c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:30:57, skipping insertion in model container [2020-10-13 09:30:57,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:48" (2/3) ... [2020-10-13 09:30:57,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e5c857c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:30:57, skipping insertion in model container [2020-10-13 09:30:57,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:30:57" (3/3) ... [2020-10-13 09:30:57,472 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label19.c [2020-10-13 09:30:57,483 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:30:57,493 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:30:57,508 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:30:57,537 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:30:57,537 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:30:57,538 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:30:57,538 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:30:57,538 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:30:57,538 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:30:57,538 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:30:57,538 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:30:57,573 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-13 09:30:57,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 09:30:57,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:30:57,587 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] [2020-10-13 09:30:57,587 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:30:57,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:30:57,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1980938625, now seen corresponding path program 1 times [2020-10-13 09:30:57,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:30:57,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797944443] [2020-10-13 09:30:57,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:30:57,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:57,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:58,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:58,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 09:30:58,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:30:58,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 390 [2020-10-13 09:30:58,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:58,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:30:58,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:30:58,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 09:30:58,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:30:58,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:30:58,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:58,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:58,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:58,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:30:58,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:30:58,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 09:30:58,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:58,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:30:58,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:30:58,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:30:58,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:30:58,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:30:58,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797944443] [2020-10-13 09:30:58,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:30:58,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:30:58,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553209230] [2020-10-13 09:30:58,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:30:58,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:30:58,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:30:58,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:30:58,385 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-13 09:31:09,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:31:09,133 INFO L93 Difference]: Finished difference Result 1689 states and 3083 transitions. [2020-10-13 09:31:09,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:31:09,136 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-10-13 09:31:09,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:31:09,165 INFO L225 Difference]: With dead ends: 1689 [2020-10-13 09:31:09,166 INFO L226 Difference]: Without dead ends: 1009 [2020-10-13 09:31:09,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:31:09,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2020-10-13 09:31:09,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 997. [2020-10-13 09:31:09,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-10-13 09:31:09,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1491 transitions. [2020-10-13 09:31:09,286 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1491 transitions. Word has length 48 [2020-10-13 09:31:09,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:31:09,287 INFO L479 AbstractCegarLoop]: Abstraction has 997 states and 1491 transitions. [2020-10-13 09:31:09,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:31:09,288 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1491 transitions. [2020-10-13 09:31:09,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 09:31:09,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:31:09,294 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:31:09,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:31:09,295 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:31:09,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:31:09,296 INFO L82 PathProgramCache]: Analyzing trace with hash 690572408, now seen corresponding path program 1 times [2020-10-13 09:31:09,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:31:09,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1306573866] [2020-10-13 09:31:09,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:31:09,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:09,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:09,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:10,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:10,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 09:31:10,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:31:10,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1389 [2020-10-13 09:31:10,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:10,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:31:10,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 09:31:10,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 09:31:10,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:31:10,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:31:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:10,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:10,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:10,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:31:10,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:31:10,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:31:10,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:10,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:31:10,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:31:10,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:31:10,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:31:10,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:31:10,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:10,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:11,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:11,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:31:11,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:31:11,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-13 09:31:11,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:11,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:31:11,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:31:11,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 09:31:11,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:31:11,113 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:31:11,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1306573866] [2020-10-13 09:31:11,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:31:11,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:31:11,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632318366] [2020-10-13 09:31:11,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:31:11,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:31:11,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:31:11,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:31:11,120 INFO L87 Difference]: Start difference. First operand 997 states and 1491 transitions. Second operand 5 states. [2020-10-13 09:31:25,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:31:25,766 INFO L93 Difference]: Finished difference Result 2898 states and 4366 transitions. [2020-10-13 09:31:25,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:31:25,767 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-13 09:31:25,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:31:25,780 INFO L225 Difference]: With dead ends: 2898 [2020-10-13 09:31:25,780 INFO L226 Difference]: Without dead ends: 1907 [2020-10-13 09:31:25,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:31:25,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1907 states. [2020-10-13 09:31:25,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1907 to 1894. [2020-10-13 09:31:25,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1894 states. [2020-10-13 09:31:25,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1894 states to 1894 states and 2574 transitions. [2020-10-13 09:31:25,915 INFO L78 Accepts]: Start accepts. Automaton has 1894 states and 2574 transitions. Word has length 122 [2020-10-13 09:31:25,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:31:25,916 INFO L479 AbstractCegarLoop]: Abstraction has 1894 states and 2574 transitions. [2020-10-13 09:31:25,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:31:25,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1894 states and 2574 transitions. [2020-10-13 09:31:25,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-13 09:31:25,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:31:25,924 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:31:25,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:31:25,925 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:31:25,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:31:25,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1902938789, now seen corresponding path program 1 times [2020-10-13 09:31:25,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:31:25,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255347516] [2020-10-13 09:31:25,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:31:25,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:26,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:26,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:26,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:26,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:27,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:27,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-13 09:31:27,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:31:27,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1242 [2020-10-13 09:31:27,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:27,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:31:27,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-13 09:31:27,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:31:27,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:31:27,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:31:27,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:27,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:27,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:27,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:31:27,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:31:27,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:31:27,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:27,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:31:27,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:31:27,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:31:27,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:31:27,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:31:27,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:27,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:27,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:27,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 09:31:27,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:31:27,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-13 09:31:27,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:27,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:31:27,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 09:31:27,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:31:27,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:31:27,624 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:31:27,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255347516] [2020-10-13 09:31:27,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:31:27,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 09:31:27,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651945830] [2020-10-13 09:31:27,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:31:27,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:31:27,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:31:27,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:31:27,631 INFO L87 Difference]: Start difference. First operand 1894 states and 2574 transitions. Second operand 5 states. [2020-10-13 09:31:40,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:31:40,630 INFO L93 Difference]: Finished difference Result 3337 states and 4940 transitions. [2020-10-13 09:31:40,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:31:40,635 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-10-13 09:31:40,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:31:40,649 INFO L225 Difference]: With dead ends: 3337 [2020-10-13 09:31:40,649 INFO L226 Difference]: Without dead ends: 2344 [2020-10-13 09:31:40,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:31:40,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2344 states. [2020-10-13 09:31:40,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2344 to 1900. [2020-10-13 09:31:40,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1900 states. [2020-10-13 09:31:40,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1900 states to 1900 states and 2580 transitions. [2020-10-13 09:31:40,717 INFO L78 Accepts]: Start accepts. Automaton has 1900 states and 2580 transitions. Word has length 144 [2020-10-13 09:31:40,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:31:40,717 INFO L479 AbstractCegarLoop]: Abstraction has 1900 states and 2580 transitions. [2020-10-13 09:31:40,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:31:40,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1900 states and 2580 transitions. [2020-10-13 09:31:40,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-13 09:31:40,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:31:40,731 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:31:40,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:31:40,732 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:31:40,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:31:40,733 INFO L82 PathProgramCache]: Analyzing trace with hash -691085063, now seen corresponding path program 1 times [2020-10-13 09:31:40,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:31:40,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [493791904] [2020-10-13 09:31:40,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:31:40,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:40,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:40,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:43,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:43,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 09:31:43,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:31:43,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2368 [2020-10-13 09:31:43,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:43,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:31:43,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-13 09:31:43,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 09:31:43,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:31:43,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:31:43,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:43,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:43,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:43,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:31:43,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:31:43,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 09:31:43,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:43,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:31:43,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:31:43,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:31:43,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:31:43,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:31:43,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:43,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:43,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:43,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 09:31:43,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:31:43,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-13 09:31:43,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:43,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:31:43,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:31:43,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-13 09:31:43,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:31:43,600 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:31:43,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [493791904] [2020-10-13 09:31:43,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:31:43,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:31:43,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600846906] [2020-10-13 09:31:43,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:31:43,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:31:43,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:31:43,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:31:43,607 INFO L87 Difference]: Start difference. First operand 1900 states and 2580 transitions. Second operand 6 states. [2020-10-13 09:31:56,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:31:56,898 INFO L93 Difference]: Finished difference Result 5127 states and 7139 transitions. [2020-10-13 09:31:56,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:31:56,899 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2020-10-13 09:31:56,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:31:56,917 INFO L225 Difference]: With dead ends: 5127 [2020-10-13 09:31:56,918 INFO L226 Difference]: Without dead ends: 3233 [2020-10-13 09:31:56,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:31:56,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3233 states. [2020-10-13 09:31:57,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3233 to 3222. [2020-10-13 09:31:57,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3222 states. [2020-10-13 09:31:57,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3222 states to 3222 states and 4495 transitions. [2020-10-13 09:31:57,015 INFO L78 Accepts]: Start accepts. Automaton has 3222 states and 4495 transitions. Word has length 157 [2020-10-13 09:31:57,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:31:57,016 INFO L479 AbstractCegarLoop]: Abstraction has 3222 states and 4495 transitions. [2020-10-13 09:31:57,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:31:57,017 INFO L276 IsEmpty]: Start isEmpty. Operand 3222 states and 4495 transitions. [2020-10-13 09:31:57,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-13 09:31:57,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:31:57,021 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:31:57,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:31:57,021 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:31:57,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:31:57,022 INFO L82 PathProgramCache]: Analyzing trace with hash 592208075, now seen corresponding path program 1 times [2020-10-13 09:31:57,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:31:57,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1440167817] [2020-10-13 09:31:57,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:31:57,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:57,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:57,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:58,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:59,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:59,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-13 09:31:59,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:31:59,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1946 [2020-10-13 09:31:59,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:59,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:31:59,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-13 09:31:59,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 09:31:59,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:31:59,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:31:59,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:59,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:59,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:59,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:31:59,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:31:59,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:31:59,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:59,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:31:59,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:31:59,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:31:59,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:31:59,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:31:59,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:59,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:59,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:59,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-13 09:31:59,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:31:59,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-13 09:31:59,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:59,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:31:59,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:31:59,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-13 09:31:59,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:31:59,573 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:31:59,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1440167817] [2020-10-13 09:31:59,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:31:59,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:31:59,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518680675] [2020-10-13 09:31:59,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:31:59,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:31:59,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:31:59,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:31:59,576 INFO L87 Difference]: Start difference. First operand 3222 states and 4495 transitions. Second operand 5 states. [2020-10-13 09:32:12,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:32:12,838 INFO L93 Difference]: Finished difference Result 5143 states and 7485 transitions. [2020-10-13 09:32:12,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:32:12,840 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2020-10-13 09:32:12,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:32:12,855 INFO L225 Difference]: With dead ends: 5143 [2020-10-13 09:32:12,855 INFO L226 Difference]: Without dead ends: 3233 [2020-10-13 09:32:12,861 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:32:12,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3233 states. [2020-10-13 09:32:12,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3233 to 3222. [2020-10-13 09:32:12,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3222 states. [2020-10-13 09:32:12,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3222 states to 3222 states and 4488 transitions. [2020-10-13 09:32:12,948 INFO L78 Accepts]: Start accepts. Automaton has 3222 states and 4488 transitions. Word has length 189 [2020-10-13 09:32:12,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:32:12,949 INFO L479 AbstractCegarLoop]: Abstraction has 3222 states and 4488 transitions. [2020-10-13 09:32:12,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:32:12,949 INFO L276 IsEmpty]: Start isEmpty. Operand 3222 states and 4488 transitions. [2020-10-13 09:32:12,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-13 09:32:12,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:32:12,953 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:32:12,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:32:12,954 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:32:12,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:32:12,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1043076659, now seen corresponding path program 1 times [2020-10-13 09:32:12,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:32:12,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1430612860] [2020-10-13 09:32:12,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:32:13,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:13,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:13,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:13,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:14,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:15,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:18,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:18,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-13 09:32:18,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:32:18,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 09:32:18,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:18,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:32:18,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-10-13 09:32:18,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:32:18,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:32:18,264 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 24 [2020-10-13 09:32:18,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:32:18,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:18,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:18,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:18,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:32:18,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:18,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:32:18,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:18,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:32:18,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:32:18,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:32:18,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:32:18,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:32:18,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:18,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:18,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:18,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:32:18,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:18,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 09:32:18,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:18,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:32:18,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:32:18,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:32:18,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:32:18,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 09:32:18,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:18,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:18,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:18,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 09:32:18,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:18,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-13 09:32:18,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:18,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:32:18,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:32:18,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:32:18,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:32:18,866 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 83 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-13 09:32:18,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1430612860] [2020-10-13 09:32:18,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:32:18,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:32:18,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161517312] [2020-10-13 09:32:18,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:32:18,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:32:18,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:32:18,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:32:18,872 INFO L87 Difference]: Start difference. First operand 3222 states and 4488 transitions. Second operand 5 states. [2020-10-13 09:32:30,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:32:30,711 INFO L93 Difference]: Finished difference Result 6481 states and 9054 transitions. [2020-10-13 09:32:30,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:32:30,718 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 197 [2020-10-13 09:32:30,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:32:30,734 INFO L225 Difference]: With dead ends: 6481 [2020-10-13 09:32:30,735 INFO L226 Difference]: Without dead ends: 3233 [2020-10-13 09:32:30,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:32:30,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3233 states. [2020-10-13 09:32:30,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3233 to 3222. [2020-10-13 09:32:30,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3222 states. [2020-10-13 09:32:30,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3222 states to 3222 states and 4481 transitions. [2020-10-13 09:32:30,835 INFO L78 Accepts]: Start accepts. Automaton has 3222 states and 4481 transitions. Word has length 197 [2020-10-13 09:32:30,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:32:30,835 INFO L479 AbstractCegarLoop]: Abstraction has 3222 states and 4481 transitions. [2020-10-13 09:32:30,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:32:30,836 INFO L276 IsEmpty]: Start isEmpty. Operand 3222 states and 4481 transitions. [2020-10-13 09:32:30,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-13 09:32:30,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:32:30,840 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:32:30,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:32:30,840 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:32:30,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:32:30,841 INFO L82 PathProgramCache]: Analyzing trace with hash -208396731, now seen corresponding path program 1 times [2020-10-13 09:32:30,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:32:30,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776838959] [2020-10-13 09:32:30,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:32:30,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:30,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:31,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:31,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:33,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:35,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:35,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:35,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-13 09:32:35,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:32:35,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 09:32:35,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:35,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:32:35,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-10-13 09:32:35,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 09:32:35,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:32:36,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:32:36,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:36,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:36,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:36,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:32:36,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:36,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:32:36,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:36,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:32:36,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:32:36,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:32:36,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:32:36,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:32:36,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:36,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:36,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:36,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:32:36,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:36,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 09:32:36,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:36,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:32:36,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:32:36,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:32:36,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:32:36,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 09:32:36,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:36,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:36,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:36,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 09:32:36,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:36,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-13 09:32:36,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:36,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:32:36,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:32:36,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 09:32:36,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:32:36,371 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 83 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-13 09:32:36,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1776838959] [2020-10-13 09:32:36,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:32:36,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:32:36,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858334515] [2020-10-13 09:32:36,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:32:36,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:32:36,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:32:36,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:32:36,377 INFO L87 Difference]: Start difference. First operand 3222 states and 4481 transitions. Second operand 5 states. [2020-10-13 09:32:55,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:32:55,269 INFO L93 Difference]: Finished difference Result 8221 states and 11768 transitions. [2020-10-13 09:32:55,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:32:55,272 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 201 [2020-10-13 09:32:55,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:32:55,289 INFO L225 Difference]: With dead ends: 8221 [2020-10-13 09:32:55,289 INFO L226 Difference]: Without dead ends: 5005 [2020-10-13 09:32:55,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:32:55,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5005 states. [2020-10-13 09:32:55,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5005 to 4994. [2020-10-13 09:32:55,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4994 states. [2020-10-13 09:32:55,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4994 states to 4994 states and 6769 transitions. [2020-10-13 09:32:55,440 INFO L78 Accepts]: Start accepts. Automaton has 4994 states and 6769 transitions. Word has length 201 [2020-10-13 09:32:55,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:32:55,441 INFO L479 AbstractCegarLoop]: Abstraction has 4994 states and 6769 transitions. [2020-10-13 09:32:55,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:32:55,442 INFO L276 IsEmpty]: Start isEmpty. Operand 4994 states and 6769 transitions. [2020-10-13 09:32:55,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-13 09:32:55,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:32:55,448 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:32:55,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:32:55,449 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:32:55,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:32:55,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1687816348, now seen corresponding path program 1 times [2020-10-13 09:32:55,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:32:55,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873597541] [2020-10-13 09:32:55,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:32:55,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:55,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:55,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:55,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:59,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:00,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:00,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-13 09:33:00,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:33:00,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 09:33:00,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:00,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 09:33:00,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 09:33:00,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 09:33:00,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:00,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:33:00,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:00,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:00,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:00,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:33:00,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:00,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:33:00,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:00,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:33:00,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:00,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:33:00,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:00,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:33:00,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:00,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:00,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:00,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:33:00,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:00,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 09:33:00,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:00,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:33:00,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:00,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 09:33:00,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:00,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 09:33:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:00,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:00,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:01,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:01,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-13 09:33:01,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:33:01,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 584 [2020-10-13 09:33:01,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:01,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:33:01,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:33:01,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-13 09:33:01,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:01,495 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 153 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:33:01,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1873597541] [2020-10-13 09:33:01,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:33:01,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:33:01,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227271214] [2020-10-13 09:33:01,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:33:01,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:33:01,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:33:01,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:33:01,498 INFO L87 Difference]: Start difference. First operand 4994 states and 6769 transitions. Second operand 7 states. [2020-10-13 09:33:27,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:33:27,175 INFO L93 Difference]: Finished difference Result 12754 states and 18035 transitions. [2020-10-13 09:33:27,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:33:27,178 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 214 [2020-10-13 09:33:27,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:33:27,220 INFO L225 Difference]: With dead ends: 12754 [2020-10-13 09:33:27,220 INFO L226 Difference]: Without dead ends: 7310 [2020-10-13 09:33:27,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:33:27,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7310 states. [2020-10-13 09:33:27,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7310 to 7310. [2020-10-13 09:33:27,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7310 states. [2020-10-13 09:33:27,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7310 states to 7310 states and 9620 transitions. [2020-10-13 09:33:27,479 INFO L78 Accepts]: Start accepts. Automaton has 7310 states and 9620 transitions. Word has length 214 [2020-10-13 09:33:27,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:33:27,480 INFO L479 AbstractCegarLoop]: Abstraction has 7310 states and 9620 transitions. [2020-10-13 09:33:27,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:33:27,480 INFO L276 IsEmpty]: Start isEmpty. Operand 7310 states and 9620 transitions. [2020-10-13 09:33:27,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-10-13 09:33:27,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:33:27,485 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:33:27,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:33:27,486 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:33:27,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:33:27,487 INFO L82 PathProgramCache]: Analyzing trace with hash -866506376, now seen corresponding path program 1 times [2020-10-13 09:33:27,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:33:27,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153916556] [2020-10-13 09:33:27,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:33:27,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:27,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:27,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:28,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:28,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-13 09:33:28,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:33:28,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 878 [2020-10-13 09:33:28,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:28,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:33:28,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 191 [2020-10-13 09:33:28,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 09:33:28,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:28,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:33:28,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:28,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:28,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:28,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:33:28,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:28,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:33:28,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:28,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:33:28,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:28,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:33:28,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:28,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:33:28,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:28,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:28,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:28,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:33:28,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:28,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 09:33:28,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:28,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:33:28,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:28,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:33:28,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:28,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:33:28,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:28,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:28,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:28,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-13 09:33:28,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:28,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-13 09:33:28,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:28,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:33:28,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:28,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-13 09:33:28,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:28,840 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 83 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-13 09:33:28,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153916556] [2020-10-13 09:33:28,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:33:28,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:33:28,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483344754] [2020-10-13 09:33:28,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:33:28,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:33:28,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:33:28,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:33:28,843 INFO L87 Difference]: Start difference. First operand 7310 states and 9620 transitions. Second operand 6 states. [2020-10-13 09:33:51,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:33:51,248 INFO L93 Difference]: Finished difference Result 25840 states and 37113 transitions. [2020-10-13 09:33:51,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:33:51,253 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 227 [2020-10-13 09:33:51,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:33:51,353 INFO L225 Difference]: With dead ends: 25840 [2020-10-13 09:33:51,354 INFO L226 Difference]: Without dead ends: 18544 [2020-10-13 09:33:51,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:33:51,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18544 states. [2020-10-13 09:33:51,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18544 to 18506. [2020-10-13 09:33:51,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18506 states. [2020-10-13 09:33:52,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18506 states to 18506 states and 26330 transitions. [2020-10-13 09:33:52,010 INFO L78 Accepts]: Start accepts. Automaton has 18506 states and 26330 transitions. Word has length 227 [2020-10-13 09:33:52,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:33:52,011 INFO L479 AbstractCegarLoop]: Abstraction has 18506 states and 26330 transitions. [2020-10-13 09:33:52,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:33:52,011 INFO L276 IsEmpty]: Start isEmpty. Operand 18506 states and 26330 transitions. [2020-10-13 09:33:52,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-13 09:33:52,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:33:52,018 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:33:52,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:33:52,018 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:33:52,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:33:52,021 INFO L82 PathProgramCache]: Analyzing trace with hash 381994420, now seen corresponding path program 1 times [2020-10-13 09:33:52,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:33:52,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042143723] [2020-10-13 09:33:52,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:33:52,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:52,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:52,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:52,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:53,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:57,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:57,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 09:33:57,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:33:57,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-13 09:33:57,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:57,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:33:57,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-10-13 09:33:57,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 09:33:57,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:57,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:33:57,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:57,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:57,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:57,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:33:57,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:57,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:33:57,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:57,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:33:57,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:57,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:33:57,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:57,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:33:57,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:57,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:57,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:57,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 09:33:57,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:57,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 09:33:57,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:57,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:33:57,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:57,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:33:57,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:57,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 09:33:57,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:57,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:57,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:57,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:33:57,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:57,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 09:33:57,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:57,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:33:57,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:57,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 09:33:57,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:57,462 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 83 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-13 09:33:57,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042143723] [2020-10-13 09:33:57,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:33:57,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:33:57,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617941352] [2020-10-13 09:33:57,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:33:57,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:33:57,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:33:57,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:33:57,465 INFO L87 Difference]: Start difference. First operand 18506 states and 26330 transitions. Second operand 5 states. [2020-10-13 09:34:13,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:34:13,862 INFO L93 Difference]: Finished difference Result 39239 states and 60587 transitions. [2020-10-13 09:34:13,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:34:13,865 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 228 [2020-10-13 09:34:13,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:34:14,040 INFO L225 Difference]: With dead ends: 39239 [2020-10-13 09:34:14,040 INFO L226 Difference]: Without dead ends: 27403 [2020-10-13 09:34:14,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:34:14,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27403 states. [2020-10-13 09:34:14,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27403 to 26096. [2020-10-13 09:34:14,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26096 states. [2020-10-13 09:34:14,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26096 states to 26096 states and 36628 transitions. [2020-10-13 09:34:14,813 INFO L78 Accepts]: Start accepts. Automaton has 26096 states and 36628 transitions. Word has length 228 [2020-10-13 09:34:14,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:34:14,814 INFO L479 AbstractCegarLoop]: Abstraction has 26096 states and 36628 transitions. [2020-10-13 09:34:14,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:34:14,814 INFO L276 IsEmpty]: Start isEmpty. Operand 26096 states and 36628 transitions. [2020-10-13 09:34:14,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-13 09:34:14,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:34:14,824 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:34:14,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:34:14,824 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:34:14,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:34:14,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1504292810, now seen corresponding path program 1 times [2020-10-13 09:34:14,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:34:14,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745869148] [2020-10-13 09:34:14,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:34:15,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:15,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:16,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:16,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:16,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:17,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:17,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-13 09:34:17,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:34:17,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1308 [2020-10-13 09:34:17,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:17,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:34:17,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 220 [2020-10-13 09:34:17,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 09:34:17,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:17,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:34:17,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:17,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:17,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:17,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:34:17,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:17,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:34:17,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:17,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:34:17,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:17,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:34:17,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:17,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:34:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:17,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:17,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:17,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:34:17,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:17,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 09:34:17,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:17,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:34:17,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:17,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:34:17,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:17,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:34:17,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:17,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:17,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:17,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 09:34:17,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:17,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 09:34:17,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:17,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:34:17,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:17,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-13 09:34:17,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:17,530 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 83 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-13 09:34:17,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745869148] [2020-10-13 09:34:17,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:34:17,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:34:17,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625908595] [2020-10-13 09:34:17,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:34:17,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:34:17,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:34:17,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:34:17,534 INFO L87 Difference]: Start difference. First operand 26096 states and 36628 transitions. Second operand 5 states. [2020-10-13 09:34:27,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:34:27,648 INFO L93 Difference]: Finished difference Result 45502 states and 64352 transitions. [2020-10-13 09:34:27,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:34:27,651 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 256 [2020-10-13 09:34:27,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:34:27,753 INFO L225 Difference]: With dead ends: 45502 [2020-10-13 09:34:27,754 INFO L226 Difference]: Without dead ends: 26096 [2020-10-13 09:34:27,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:34:27,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26096 states. [2020-10-13 09:34:28,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26096 to 26096. [2020-10-13 09:34:28,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26096 states. [2020-10-13 09:34:28,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26096 states to 26096 states and 36527 transitions. [2020-10-13 09:34:28,397 INFO L78 Accepts]: Start accepts. Automaton has 26096 states and 36527 transitions. Word has length 256 [2020-10-13 09:34:28,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:34:28,398 INFO L479 AbstractCegarLoop]: Abstraction has 26096 states and 36527 transitions. [2020-10-13 09:34:28,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:34:28,398 INFO L276 IsEmpty]: Start isEmpty. Operand 26096 states and 36527 transitions. [2020-10-13 09:34:28,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-13 09:34:28,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:34:28,407 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:34:28,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:34:28,408 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:34:28,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:34:28,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1613754790, now seen corresponding path program 1 times [2020-10-13 09:34:28,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:34:28,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127149187] [2020-10-13 09:34:28,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:34:28,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:28,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:28,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:28,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:29,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:30,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:30,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-13 09:34:30,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:34:30,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2405 [2020-10-13 09:34:30,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:30,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:34:30,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 220 [2020-10-13 09:34:30,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:34:30,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:30,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:34:30,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:30,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:30,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:30,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:34:30,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:30,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:34:30,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:30,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:34:30,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:30,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:34:30,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:30,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:34:30,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:30,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:30,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:30,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 09:34:30,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:30,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 09:34:30,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:30,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:34:30,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:30,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:34:30,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:30,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 09:34:31,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:31,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:31,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:31,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 09:34:31,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:31,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 09:34:31,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:31,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:34:31,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-13 09:34:31,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:34:31,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:31,151 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-13 09:34:31,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127149187] [2020-10-13 09:34:31,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:34:31,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 09:34:31,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986799027] [2020-10-13 09:34:31,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:34:31,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:34:31,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:34:31,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:34:31,154 INFO L87 Difference]: Start difference. First operand 26096 states and 36527 transitions. Second operand 5 states.