/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 --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 interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:32:42,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:32:42,278 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:32:42,326 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:32:42,327 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:32:42,336 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:32:42,338 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:32:42,342 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:32:42,345 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:32:42,348 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:32:42,349 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:32:42,350 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:32:42,350 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:32:42,353 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:32:42,356 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:32:42,358 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:32:42,360 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:32:42,361 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:32:42,362 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:32:42,367 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:32:42,368 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:32:42,370 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:32:42,371 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:32:42,372 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:32:42,374 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:32:42,374 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:32:42,375 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:32:42,376 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:32:42,376 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:32:42,377 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:32:42,377 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:32:42,378 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:32:42,379 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:32:42,380 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:32:42,381 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:32:42,381 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:32:42,382 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:32:42,383 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:32:42,383 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:32:42,384 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:32:42,385 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:32:42,386 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 [2020-09-21 11:32:42,410 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:32:42,410 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:32:42,411 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:32:42,412 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:32:42,412 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:32:42,412 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:32:42,412 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:32:42,413 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:32:42,413 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:32:42,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:32:42,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:32:42,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:32:42,414 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:32:42,414 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:32:42,414 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:32:42,414 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:32:42,414 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:32:42,415 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:32:42,415 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:32:42,415 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:32:42,415 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:32:42,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:32:42,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:32:42,416 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:32:42,416 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:32:42,416 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:32:42,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:32:42,417 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:32:42,417 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:32:42,417 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.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;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:32:42,862 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:32:42,885 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:32:42,889 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:32:42,891 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:32:42,891 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:32:42,892 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_5.c [2020-09-21 11:32:42,971 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad5ffe277/a22aedf9ab594ff3986643255d424da6/FLAG3d83b6fb7 [2020-09-21 11:32:43,590 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:32:43,591 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-industry-pattern/ofuf_5.c [2020-09-21 11:32:43,604 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad5ffe277/a22aedf9ab594ff3986643255d424da6/FLAG3d83b6fb7 [2020-09-21 11:32:43,795 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad5ffe277/a22aedf9ab594ff3986643255d424da6 [2020-09-21 11:32:43,809 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:32:43,815 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:32:43,817 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:32:43,818 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:32:43,822 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:32:43,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:32:43" (1/1) ... [2020-09-21 11:32:43,828 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b8ae939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:43, skipping insertion in model container [2020-09-21 11:32:43,829 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:32:43" (1/1) ... [2020-09-21 11:32:43,838 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:32:43,885 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:32:44,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:32:44,375 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:32:44,453 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:32:44,482 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:32:44,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:44 WrapperNode [2020-09-21 11:32:44,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:32:44,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:32:44,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:32:44,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:32:44,500 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:44" (1/1) ... [2020-09-21 11:32:44,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:44" (1/1) ... [2020-09-21 11:32:44,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:44" (1/1) ... [2020-09-21 11:32:44,524 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:44" (1/1) ... [2020-09-21 11:32:44,572 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:44" (1/1) ... [2020-09-21 11:32:44,584 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:44" (1/1) ... [2020-09-21 11:32:44,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:44" (1/1) ... [2020-09-21 11:32:44,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:32:44,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:32:44,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:32:44,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:32:44,599 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:44" (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 [2020-09-21 11:32:44,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:32:44,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:32:44,699 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 11:32:44,699 INFO L138 BoogieDeclarations]: Found implementation of procedure avoid_zero [2020-09-21 11:32:44,699 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_89 [2020-09-21 11:32:44,700 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_92 [2020-09-21 11:32:44,700 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_95 [2020-09-21 11:32:44,701 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_96 [2020-09-21 11:32:44,701 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_97 [2020-09-21 11:32:44,702 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_99 [2020-09-21 11:32:44,702 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_100 [2020-09-21 11:32:44,702 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:32:44,702 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-21 11:32:44,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:32:44,703 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 11:32:44,704 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 11:32:44,704 INFO L130 BoogieDeclarations]: Found specification of procedure avoid_zero [2020-09-21 11:32:44,704 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-09-21 11:32:44,704 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2020-09-21 11:32:44,705 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_92 [2020-09-21 11:32:44,705 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_95 [2020-09-21 11:32:44,705 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_96 [2020-09-21 11:32:44,705 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_97 [2020-09-21 11:32:44,705 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 11:32:44,705 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_99 [2020-09-21 11:32:44,707 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_100 [2020-09-21 11:32:44,707 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-09-21 11:32:44,707 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:32:44,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-21 11:32:44,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 11:32:44,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 11:32:44,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 11:32:44,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 11:32:44,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 11:32:44,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 11:32:44,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 11:32:44,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 11:32:44,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:32:44,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-21 11:32:44,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:32:45,903 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:32:45,903 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-09-21 11:32:45,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:32:45 BoogieIcfgContainer [2020-09-21 11:32:45,910 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:32:45,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:32:45,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:32:45,915 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:32:45,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:32:43" (1/3) ... [2020-09-21 11:32:45,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44e82634 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:32:45, skipping insertion in model container [2020-09-21 11:32:45,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:44" (2/3) ... [2020-09-21 11:32:45,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44e82634 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:32:45, skipping insertion in model container [2020-09-21 11:32:45,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:32:45" (3/3) ... [2020-09-21 11:32:45,920 INFO L109 eAbstractionObserver]: Analyzing ICFG ofuf_5.c [2020-09-21 11:32:45,931 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:32:45,942 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:32:45,962 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:32:45,994 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:32:45,994 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:32:45,994 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:32:45,995 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:32:45,995 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:32:45,995 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:32:45,995 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:32:45,995 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:32:46,024 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states. [2020-09-21 11:32:46,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-21 11:32:46,038 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:32:46,040 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] [2020-09-21 11:32:46,040 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:32:46,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:32:46,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1328586124, now seen corresponding path program 1 times [2020-09-21 11:32:46,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:32:46,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [18170381] [2020-09-21 11:32:46,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:32:46,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:46,400 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:46,401 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:46,401 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:46,401 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:46,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-21 11:32:46,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:46,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-21 11:32:46,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:46,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:32:46,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-21 11:32:46,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:32:46,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:32:46,741 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-09-21 11:32:46,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:32:46,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:46,761 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:46,762 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:46,762 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:46,762 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:46,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:32:46,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:46,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:32:46,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:46,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:32:46,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:32:46,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:32:46,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:32:46,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-21 11:32:46,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:46,904 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:46,905 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:46,905 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:46,905 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:46,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 11:32:46,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:46,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-21 11:32:46,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:46,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:32:46,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:32:46,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:32:46,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:32:46,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-21 11:32:46,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:46,961 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:46,961 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:46,961 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:46,962 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:46,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:32:46,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:46,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:32:46,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:46,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:32:46,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 11:32:46,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:32:46,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:32:46,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 11:32:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:46,985 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:46,986 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:46,986 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:46,986 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:46,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:32:46,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:46,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:32:46,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:46,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:32:46,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 11:32:46,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:32:46,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:32:47,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:32:47,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [18170381] [2020-09-21 11:32:47,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:32:47,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:32:47,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125071851] [2020-09-21 11:32:47,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:32:47,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:32:47,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:32:47,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:32:47,036 INFO L87 Difference]: Start difference. First operand 129 states. Second operand 5 states. [2020-09-21 11:32:47,194 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-09-21 11:32:48,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:32:48,257 INFO L93 Difference]: Finished difference Result 266 states and 409 transitions. [2020-09-21 11:32:48,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 11:32:48,259 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-09-21 11:32:48,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:32:48,282 INFO L225 Difference]: With dead ends: 266 [2020-09-21 11:32:48,282 INFO L226 Difference]: Without dead ends: 141 [2020-09-21 11:32:48,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:32:48,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-09-21 11:32:48,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 121. [2020-09-21 11:32:48,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-09-21 11:32:48,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 168 transitions. [2020-09-21 11:32:48,366 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 168 transitions. Word has length 43 [2020-09-21 11:32:48,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:32:48,366 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 168 transitions. [2020-09-21 11:32:48,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:32:48,367 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 168 transitions. [2020-09-21 11:32:48,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-21 11:32:48,371 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:32:48,371 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] [2020-09-21 11:32:48,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:32:48,372 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:32:48,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:32:48,372 INFO L82 PathProgramCache]: Analyzing trace with hash -294008176, now seen corresponding path program 1 times [2020-09-21 11:32:48,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:32:48,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199723919] [2020-09-21 11:32:48,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:32:48,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:48,468 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:48,469 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:48,469 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:48,469 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:48,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-21 11:32:48,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:48,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 11:32:48,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:48,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:32:48,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-21 11:32:48,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:32:48,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:32:48,649 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-09-21 11:32:48,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:32:48,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:48,658 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:48,659 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:48,659 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:48,659 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:48,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:32:48,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:48,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:32:48,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:48,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:32:48,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:32:48,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:32:48,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:32:48,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-21 11:32:48,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:48,728 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:48,729 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:48,729 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:48,729 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:48,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-21 11:32:48,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:48,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-21 11:32:48,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:48,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:32:48,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:32:48,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:32:48,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:32:48,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-21 11:32:48,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:48,787 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:48,787 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:48,788 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:48,788 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:48,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:32:48,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:48,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:32:48,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:48,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:32:48,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 11:32:48,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:32:48,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:32:48,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-21 11:32:48,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:48,796 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:48,796 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:48,796 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:48,797 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:48,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:32:48,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:48,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:32:48,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:48,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:32:48,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:32:48,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:32:48,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:32:48,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:32:48,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199723919] [2020-09-21 11:32:48,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:32:48,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-21 11:32:48,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409013001] [2020-09-21 11:32:48,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:32:48,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:32:48,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:32:48,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:32:48,813 INFO L87 Difference]: Start difference. First operand 121 states and 168 transitions. Second operand 6 states. [2020-09-21 11:32:50,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:32:50,024 INFO L93 Difference]: Finished difference Result 267 states and 385 transitions. [2020-09-21 11:32:50,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:32:50,025 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2020-09-21 11:32:50,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:32:50,030 INFO L225 Difference]: With dead ends: 267 [2020-09-21 11:32:50,032 INFO L226 Difference]: Without dead ends: 162 [2020-09-21 11:32:50,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:32:50,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-09-21 11:32:50,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 123. [2020-09-21 11:32:50,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-09-21 11:32:50,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 170 transitions. [2020-09-21 11:32:50,090 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 170 transitions. Word has length 45 [2020-09-21 11:32:50,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:32:50,091 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 170 transitions. [2020-09-21 11:32:50,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:32:50,091 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 170 transitions. [2020-09-21 11:32:50,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-21 11:32:50,104 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:32:50,105 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 11:32:50,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:32:50,106 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:32:50,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:32:50,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1235066606, now seen corresponding path program 2 times [2020-09-21 11:32:50,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:32:50,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [197983972] [2020-09-21 11:32:50,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:32:50,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:50,214 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:50,214 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:50,215 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:50,215 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:50,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-21 11:32:50,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:50,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-21 11:32:50,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:50,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:32:50,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-21 11:32:50,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:32:50,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:32:50,372 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-09-21 11:32:50,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:32:50,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:50,380 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:50,380 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:50,380 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:50,380 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:50,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:32:50,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:50,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:32:50,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:50,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:32:50,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:32:50,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:32:50,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:32:50,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-21 11:32:50,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:50,462 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:50,463 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:50,463 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:50,464 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:50,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 11:32:50,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:50,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-21 11:32:50,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:50,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:32:50,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:32:50,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:32:50,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:32:50,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-21 11:32:50,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:50,540 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:50,540 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:50,541 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:50,541 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:50,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:32:50,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:50,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:32:50,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:50,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:32:50,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 11:32:50,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:32:50,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:32:50,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 11:32:50,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:50,550 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:50,551 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:50,551 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:50,551 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:50,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:32:50,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:50,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:32:50,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:50,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:32:50,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:32:50,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:32:50,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:32:50,596 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:32:50,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [197983972] [2020-09-21 11:32:50,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:32:50,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 11:32:50,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856013063] [2020-09-21 11:32:50,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:32:50,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:32:50,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:32:50,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:32:50,599 INFO L87 Difference]: Start difference. First operand 123 states and 170 transitions. Second operand 7 states. [2020-09-21 11:32:50,722 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-09-21 11:32:51,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:32:51,908 INFO L93 Difference]: Finished difference Result 288 states and 418 transitions. [2020-09-21 11:32:51,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 11:32:51,913 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 47 [2020-09-21 11:32:51,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:32:51,916 INFO L225 Difference]: With dead ends: 288 [2020-09-21 11:32:51,916 INFO L226 Difference]: Without dead ends: 183 [2020-09-21 11:32:51,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:32:51,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-09-21 11:32:51,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 125. [2020-09-21 11:32:51,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-09-21 11:32:51,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 172 transitions. [2020-09-21 11:32:51,939 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 172 transitions. Word has length 47 [2020-09-21 11:32:51,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:32:51,940 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 172 transitions. [2020-09-21 11:32:51,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:32:51,940 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 172 transitions. [2020-09-21 11:32:51,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-21 11:32:51,942 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:32:51,942 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-21 11:32:51,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:32:51,943 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:32:51,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:32:51,943 INFO L82 PathProgramCache]: Analyzing trace with hash 636445864, now seen corresponding path program 1 times [2020-09-21 11:32:51,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:32:51,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084202696] [2020-09-21 11:32:51,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:32:51,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:52,022 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:52,023 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:52,023 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:52,023 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:52,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-21 11:32:52,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:52,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-21 11:32:52,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:52,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:32:52,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-21 11:32:52,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:32:52,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:32:52,178 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-09-21 11:32:52,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:32:52,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:52,184 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:52,184 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:52,184 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:52,185 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:52,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:32:52,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:52,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:32:52,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:52,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:32:52,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:32:52,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:32:52,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:32:52,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-21 11:32:52,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:52,250 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:52,250 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:52,250 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:52,251 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:52,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-21 11:32:52,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:52,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-21 11:32:52,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:52,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:32:52,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:32:52,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:32:52,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:32:52,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-21 11:32:52,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:52,337 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:52,337 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:52,337 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:52,337 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:52,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:32:52,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:52,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:32:52,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:52,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:32:52,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 11:32:52,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:32:52,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:32:52,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-21 11:32:52,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:52,345 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:52,345 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:52,346 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:52,346 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:52,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:32:52,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:52,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:32:52,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:52,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:32:52,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:32:52,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:32:52,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:32:52,355 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 11:32:52,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084202696] [2020-09-21 11:32:52,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:32:52,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-21 11:32:52,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570461248] [2020-09-21 11:32:52,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:32:52,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:32:52,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:32:52,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:32:52,358 INFO L87 Difference]: Start difference. First operand 125 states and 172 transitions. Second operand 8 states. [2020-09-21 11:32:52,491 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-09-21 11:32:54,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:32:54,156 INFO L93 Difference]: Finished difference Result 309 states and 451 transitions. [2020-09-21 11:32:54,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 11:32:54,157 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-09-21 11:32:54,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:32:54,160 INFO L225 Difference]: With dead ends: 309 [2020-09-21 11:32:54,160 INFO L226 Difference]: Without dead ends: 204 [2020-09-21 11:32:54,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:32:54,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-09-21 11:32:54,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 127. [2020-09-21 11:32:54,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-09-21 11:32:54,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 174 transitions. [2020-09-21 11:32:54,181 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 174 transitions. Word has length 53 [2020-09-21 11:32:54,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:32:54,182 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 174 transitions. [2020-09-21 11:32:54,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:32:54,182 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 174 transitions. [2020-09-21 11:32:54,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-21 11:32:54,183 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:32:54,183 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2020-09-21 11:32:54,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:32:54,184 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:32:54,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:32:54,184 INFO L82 PathProgramCache]: Analyzing trace with hash -375236310, now seen corresponding path program 2 times [2020-09-21 11:32:54,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:32:54,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [701870061] [2020-09-21 11:32:54,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:32:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:54,245 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:54,245 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:54,245 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:54,246 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:54,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-21 11:32:54,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:54,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:32:54,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:54,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:32:54,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-21 11:32:54,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 11:32:54,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:32:54,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:32:54,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:54,396 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:54,396 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:54,396 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:54,397 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:54,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:32:54,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:54,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:32:54,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:54,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:32:54,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:32:54,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:32:54,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:32:54,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-21 11:32:54,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:54,491 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:54,492 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:54,492 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:54,492 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:54,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:32:54,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:54,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 11:32:54,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:54,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:32:54,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:32:54,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 11:32:54,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:32:54,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 11:32:54,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:54,555 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:54,555 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:54,555 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:54,555 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:54,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:32:54,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:54,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:32:54,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:54,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:32:54,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 11:32:54,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:32:54,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:32:54,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 11:32:54,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:54,562 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:54,562 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:54,562 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:54,563 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:54,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:32:54,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:54,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:32:54,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:54,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:32:54,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:32:54,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:32:54,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:32:54,572 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-21 11:32:54,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [701870061] [2020-09-21 11:32:54,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:32:54,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:32:54,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696239284] [2020-09-21 11:32:54,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:32:54,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:32:54,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:32:54,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:32:54,574 INFO L87 Difference]: Start difference. First operand 127 states and 174 transitions. Second operand 5 states. [2020-09-21 11:32:55,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:32:55,485 INFO L93 Difference]: Finished difference Result 178 states and 240 transitions. [2020-09-21 11:32:55,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 11:32:55,486 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-09-21 11:32:55,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:32:55,488 INFO L225 Difference]: With dead ends: 178 [2020-09-21 11:32:55,488 INFO L226 Difference]: Without dead ends: 135 [2020-09-21 11:32:55,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:32:55,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-09-21 11:32:55,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 127. [2020-09-21 11:32:55,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-09-21 11:32:55,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 173 transitions. [2020-09-21 11:32:55,505 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 173 transitions. Word has length 55 [2020-09-21 11:32:55,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:32:55,505 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 173 transitions. [2020-09-21 11:32:55,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:32:55,506 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 173 transitions. [2020-09-21 11:32:55,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-21 11:32:55,507 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:32:55,507 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2020-09-21 11:32:55,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:32:55,508 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:32:55,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:32:55,508 INFO L82 PathProgramCache]: Analyzing trace with hash -7587439, now seen corresponding path program 1 times [2020-09-21 11:32:55,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:32:55,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [455402023] [2020-09-21 11:32:55,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:32:55,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:55,559 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:55,559 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:55,559 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:55,559 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:55,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-21 11:32:55,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:55,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:32:55,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:55,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:32:55,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-09-21 11:32:55,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:32:55,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:32:55,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:32:55,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:55,707 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:55,708 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:55,708 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:55,709 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:55,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:32:55,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:55,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:32:55,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:55,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:32:55,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:32:55,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:32:55,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:32:55,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-21 11:32:55,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:55,756 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:55,757 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:55,757 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:55,757 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:55,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-21 11:32:55,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:55,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:32:55,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:55,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:32:55,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:32:55,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:32:55,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:32:55,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 11:32:55,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:55,805 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:55,805 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:55,806 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:55,806 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:55,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:32:55,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:55,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:32:55,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:55,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:32:55,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 11:32:55,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:32:55,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:32:55,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-21 11:32:55,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:55,813 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:55,813 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:55,813 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:55,813 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:55,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:32:55,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:55,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:32:55,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:55,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:32:55,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:32:55,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:32:55,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:32:55,822 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-21 11:32:55,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [455402023] [2020-09-21 11:32:55,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:32:55,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:32:55,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45599877] [2020-09-21 11:32:55,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:32:55,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:32:55,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:32:55,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:32:55,825 INFO L87 Difference]: Start difference. First operand 127 states and 173 transitions. Second operand 5 states. [2020-09-21 11:32:55,974 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-09-21 11:32:56,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:32:56,847 INFO L93 Difference]: Finished difference Result 188 states and 256 transitions. [2020-09-21 11:32:56,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 11:32:56,848 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 56 [2020-09-21 11:32:56,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:32:56,850 INFO L225 Difference]: With dead ends: 188 [2020-09-21 11:32:56,851 INFO L226 Difference]: Without dead ends: 145 [2020-09-21 11:32:56,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:32:56,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-09-21 11:32:56,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 128. [2020-09-21 11:32:56,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-09-21 11:32:56,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 174 transitions. [2020-09-21 11:32:56,878 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 174 transitions. Word has length 56 [2020-09-21 11:32:56,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:32:56,879 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 174 transitions. [2020-09-21 11:32:56,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:32:56,879 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 174 transitions. [2020-09-21 11:32:56,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-21 11:32:56,881 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:32:56,881 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:32:56,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 11:32:56,882 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:32:56,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:32:56,882 INFO L82 PathProgramCache]: Analyzing trace with hash -360729933, now seen corresponding path program 1 times [2020-09-21 11:32:56,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:32:56,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [313934146] [2020-09-21 11:32:56,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:32:56,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:56,950 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:56,950 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:56,951 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:56,951 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:56,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-21 11:32:56,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:56,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:32:56,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:56,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:32:56,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-21 11:32:56,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:32:56,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:32:57,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:32:57,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:57,108 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:57,108 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:57,109 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:57,109 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:57,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:32:57,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:57,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:32:57,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:57,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:32:57,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:32:57,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:32:57,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:32:57,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-21 11:32:57,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:57,141 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:57,141 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:57,142 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:57,142 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:57,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:32:57,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:57,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:32:57,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:57,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:32:57,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:32:57,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:32:57,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:32:57,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:32:57,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:57,158 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:57,158 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:57,159 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:57,159 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:57,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:32:57,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:57,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:32:57,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:57,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:32:57,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:32:57,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:32:57,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:32:57,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 11:32:57,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:57,167 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:57,167 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:57,167 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:57,167 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:57,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:32:57,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:57,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:32:57,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:57,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:32:57,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 11:32:57,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:32:57,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:32:57,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-21 11:32:57,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:57,174 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:57,174 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:57,174 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:57,174 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:57,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:32:57,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:57,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:32:57,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:57,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:32:57,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:32:57,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:32:57,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:32:57,182 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-21 11:32:57,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [313934146] [2020-09-21 11:32:57,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:32:57,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:32:57,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716534712] [2020-09-21 11:32:57,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:32:57,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:32:57,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:32:57,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:32:57,184 INFO L87 Difference]: Start difference. First operand 128 states and 174 transitions. Second operand 5 states. [2020-09-21 11:32:58,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:32:58,048 INFO L93 Difference]: Finished difference Result 167 states and 223 transitions. [2020-09-21 11:32:58,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 11:32:58,052 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 57 [2020-09-21 11:32:58,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:32:58,053 INFO L225 Difference]: With dead ends: 167 [2020-09-21 11:32:58,054 INFO L226 Difference]: Without dead ends: 132 [2020-09-21 11:32:58,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:32:58,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-09-21 11:32:58,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 129. [2020-09-21 11:32:58,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-09-21 11:32:58,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 175 transitions. [2020-09-21 11:32:58,067 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 175 transitions. Word has length 57 [2020-09-21 11:32:58,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:32:58,068 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 175 transitions. [2020-09-21 11:32:58,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:32:58,068 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 175 transitions. [2020-09-21 11:32:58,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-21 11:32:58,069 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:32:58,070 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:32:58,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 11:32:58,070 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:32:58,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:32:58,070 INFO L82 PathProgramCache]: Analyzing trace with hash 450483994, now seen corresponding path program 1 times [2020-09-21 11:32:58,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:32:58,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [820822858] [2020-09-21 11:32:58,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:32:58,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:58,128 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:58,129 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:58,129 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:58,129 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:58,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-21 11:32:58,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:58,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:32:58,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:58,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:32:58,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-21 11:32:58,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:32:58,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:32:58,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:32:58,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:58,308 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:58,309 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:58,309 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:58,309 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:58,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:32:58,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:58,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:32:58,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:58,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:32:58,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:32:58,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:32:58,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:32:58,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-21 11:32:58,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:58,349 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:58,349 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:58,350 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:58,350 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:58,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:32:58,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:58,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:32:58,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:58,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:32:58,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:32:58,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:32:58,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 11:32:58,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:32:58,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:58,368 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:58,368 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:58,368 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:58,368 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:58,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:32:58,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:58,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:32:58,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:58,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:32:58,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:32:58,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:32:58,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:32:58,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 11:32:58,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:58,378 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:58,378 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:58,378 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:58,379 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:58,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:32:58,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:58,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:32:58,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:58,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:32:58,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 11:32:58,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:32:58,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:32:58,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-21 11:32:58,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:58,388 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:58,388 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:58,389 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:58,389 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:58,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:32:58,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:58,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:32:58,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:58,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:32:58,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:32:58,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:32:58,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:32:58,400 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-21 11:32:58,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [820822858] [2020-09-21 11:32:58,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:32:58,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-21 11:32:58,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618794032] [2020-09-21 11:32:58,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:32:58,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:32:58,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:32:58,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:32:58,403 INFO L87 Difference]: Start difference. First operand 129 states and 175 transitions. Second operand 6 states. [2020-09-21 11:32:58,526 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-09-21 11:32:59,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:32:59,540 INFO L93 Difference]: Finished difference Result 171 states and 229 transitions. [2020-09-21 11:32:59,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:32:59,542 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-09-21 11:32:59,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:32:59,544 INFO L225 Difference]: With dead ends: 171 [2020-09-21 11:32:59,544 INFO L226 Difference]: Without dead ends: 136 [2020-09-21 11:32:59,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:32:59,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-09-21 11:32:59,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 133. [2020-09-21 11:32:59,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-09-21 11:32:59,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 181 transitions. [2020-09-21 11:32:59,561 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 181 transitions. Word has length 61 [2020-09-21 11:32:59,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:32:59,562 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 181 transitions. [2020-09-21 11:32:59,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:32:59,562 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 181 transitions. [2020-09-21 11:32:59,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-21 11:32:59,564 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:32:59,564 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:32:59,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 11:32:59,565 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:32:59,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:32:59,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1892847615, now seen corresponding path program 2 times [2020-09-21 11:32:59,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:32:59,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777169477] [2020-09-21 11:32:59,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:32:59,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:59,630 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:59,631 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:59,631 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:59,631 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:59,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-21 11:32:59,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:59,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:32:59,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:59,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:32:59,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-21 11:32:59,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 11:32:59,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:32:59,838 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-09-21 11:32:59,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:32:59,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:59,843 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:59,843 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:59,843 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:59,843 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:59,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:32:59,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:59,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:32:59,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:59,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:32:59,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:32:59,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:32:59,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:32:59,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-21 11:32:59,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:59,878 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:59,878 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:59,878 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:59,878 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:59,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:32:59,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:59,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:32:59,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:59,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:32:59,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:32:59,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:32:59,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:32:59,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:32:59,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:59,894 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:59,894 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:59,895 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:59,895 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:59,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:32:59,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:59,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:32:59,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:59,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:32:59,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:32:59,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:32:59,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:32:59,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 11:32:59,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:59,904 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:59,904 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:59,905 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:59,905 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:59,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:32:59,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:59,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:32:59,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:59,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:32:59,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 11:32:59,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:32:59,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:32:59,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-21 11:32:59,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:59,911 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:59,911 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:59,911 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:59,912 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:59,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:32:59,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:59,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:32:59,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:59,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:32:59,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:32:59,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:32:59,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:32:59,921 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-21 11:32:59,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777169477] [2020-09-21 11:32:59,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:32:59,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 11:32:59,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598166406] [2020-09-21 11:32:59,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:32:59,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:32:59,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:32:59,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:32:59,925 INFO L87 Difference]: Start difference. First operand 133 states and 181 transitions. Second operand 7 states. [2020-09-21 11:33:01,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:33:01,315 INFO L93 Difference]: Finished difference Result 175 states and 235 transitions. [2020-09-21 11:33:01,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 11:33:01,316 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2020-09-21 11:33:01,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:33:01,318 INFO L225 Difference]: With dead ends: 175 [2020-09-21 11:33:01,319 INFO L226 Difference]: Without dead ends: 140 [2020-09-21 11:33:01,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:33:01,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-09-21 11:33:01,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 137. [2020-09-21 11:33:01,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-09-21 11:33:01,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 187 transitions. [2020-09-21 11:33:01,332 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 187 transitions. Word has length 65 [2020-09-21 11:33:01,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:33:01,332 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 187 transitions. [2020-09-21 11:33:01,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:33:01,333 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 187 transitions. [2020-09-21 11:33:01,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-21 11:33:01,334 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:33:01,334 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:33:01,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 11:33:01,335 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:33:01,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:33:01,335 INFO L82 PathProgramCache]: Analyzing trace with hash 212614504, now seen corresponding path program 3 times [2020-09-21 11:33:01,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:33:01,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1647669823] [2020-09-21 11:33:01,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:33:01,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:33:01,400 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:33:01,400 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:33:01,400 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:33:01,401 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:33:01,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-21 11:33:01,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:33:01,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 11:33:01,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:33:01,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:33:01,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-21 11:33:01,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 11:33:01,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:33:01,701 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-09-21 11:33:01,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:33:01,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:33:01,709 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:33:01,709 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:33:01,709 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:33:01,709 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:33:01,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:33:01,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:33:01,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:33:01,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:33:01,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:33:01,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:33:01,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:33:01,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:33:01,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-21 11:33:01,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:33:01,758 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:33:01,758 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:33:01,758 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:33:01,759 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:33:01,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:33:01,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:33:01,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:33:01,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:33:01,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:33:01,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:33:01,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:33:01,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:33:01,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:33:01,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:33:01,780 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:33:01,781 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:33:01,781 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:33:01,781 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:33:01,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:33:01,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:33:01,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:33:01,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:33:01,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:33:01,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:33:01,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:33:01,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:33:01,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-21 11:33:01,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:33:01,794 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:33:01,794 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:33:01,795 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:33:01,795 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:33:01,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:33:01,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:33:01,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:33:01,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:33:01,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:33:01,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 11:33:01,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:33:01,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:33:01,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-21 11:33:01,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:33:01,803 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:33:01,804 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:33:01,804 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:33:01,804 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:33:01,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:33:01,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:33:01,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:33:01,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:33:01,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:33:01,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:33:01,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:33:01,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:33:01,822 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-21 11:33:01,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1647669823] [2020-09-21 11:33:01,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:33:01,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-21 11:33:01,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367884497] [2020-09-21 11:33:01,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:33:01,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:33:01,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:33:01,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:33:01,826 INFO L87 Difference]: Start difference. First operand 137 states and 187 transitions. Second operand 8 states. [2020-09-21 11:33:01,989 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-09-21 11:33:03,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:33:03,025 INFO L93 Difference]: Finished difference Result 179 states and 241 transitions. [2020-09-21 11:33:03,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 11:33:03,027 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2020-09-21 11:33:03,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:33:03,029 INFO L225 Difference]: With dead ends: 179 [2020-09-21 11:33:03,029 INFO L226 Difference]: Without dead ends: 144 [2020-09-21 11:33:03,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:33:03,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-09-21 11:33:03,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 141. [2020-09-21 11:33:03,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-09-21 11:33:03,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 193 transitions. [2020-09-21 11:33:03,044 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 193 transitions. Word has length 69 [2020-09-21 11:33:03,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:33:03,045 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 193 transitions. [2020-09-21 11:33:03,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:33:03,045 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 193 transitions. [2020-09-21 11:33:03,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-21 11:33:03,046 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:33:03,047 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:33:03,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 11:33:03,047 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:33:03,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:33:03,047 INFO L82 PathProgramCache]: Analyzing trace with hash -374866097, now seen corresponding path program 4 times [2020-09-21 11:33:03,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:33:03,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841905347] [2020-09-21 11:33:03,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:33:03,121 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-21 11:33:03,121 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-09-21 11:33:03,121 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 11:33:03,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 11:33:03,167 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-21 11:33:03,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:33:03 BoogieIcfgContainer [2020-09-21 11:33:03,167 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:33:03,170 INFO L168 Benchmark]: Toolchain (without parser) took 19359.35 ms. Allocated memory was 147.8 MB in the beginning and 462.4 MB in the end (delta: 314.6 MB). Free memory was 103.1 MB in the beginning and 207.8 MB in the end (delta: -104.7 MB). Peak memory consumption was 209.8 MB. Max. memory is 7.1 GB. [2020-09-21 11:33:03,171 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 11:33:03,172 INFO L168 Benchmark]: CACSL2BoogieTranslator took 665.96 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 102.4 MB in the beginning and 175.4 MB in the end (delta: -73.0 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2020-09-21 11:33:03,172 INFO L168 Benchmark]: Boogie Preprocessor took 113.14 ms. Allocated memory is still 205.0 MB. Free memory was 175.4 MB in the beginning and 170.8 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2020-09-21 11:33:03,173 INFO L168 Benchmark]: RCFGBuilder took 1313.05 ms. Allocated memory is still 205.0 MB. Free memory was 170.8 MB in the beginning and 108.9 MB in the end (delta: 61.9 MB). Peak memory consumption was 61.9 MB. Max. memory is 7.1 GB. [2020-09-21 11:33:03,174 INFO L168 Benchmark]: TraceAbstraction took 17256.26 ms. Allocated memory was 205.0 MB in the beginning and 462.4 MB in the end (delta: 257.4 MB). Free memory was 108.3 MB in the beginning and 207.8 MB in the end (delta: -99.5 MB). Peak memory consumption was 157.9 MB. Max. memory is 7.1 GB. [2020-09-21 11:33:03,177 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 665.96 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 102.4 MB in the beginning and 175.4 MB in the end (delta: -73.0 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.14 ms. Allocated memory is still 205.0 MB. Free memory was 175.4 MB in the beginning and 170.8 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1313.05 ms. Allocated memory is still 205.0 MB. Free memory was 170.8 MB in the beginning and 108.9 MB in the end (delta: 61.9 MB). Peak memory consumption was 61.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 17256.26 ms. Allocated memory was 205.0 MB in the beginning and 462.4 MB in the end (delta: 257.4 MB). Free memory was 108.3 MB in the beginning and 207.8 MB in the end (delta: -99.5 MB). Peak memory consumption was 157.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 461]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L179] unsigned int Id_MCDC_104; [L180] UINT16 Id_MCDC_105; [L181] UINT16 Id_MCDC_106; [L182] Od_IndexTable* Id_MCDC_107; [L183] Od_IndexTable* Id_MCDC_108; [L184] Od_IndexTable* Id_MCDC_109; [L185] Od_IndexTable* Id_MCDC_110; [L186] Od_IndexTable* Id_MCDC_111; [L187] UINT32 Id_MCDC_112 [4]; [L188] CanOpenNode Id_MCDC_113; [L189] UINT32 Id_MCDC_114=0; [L427] void * Id_MCDC_143; [L428] void * Id_MCDC_144; [L429] void * Id_MCDC_145; [L430] void * Id_MCDC_146; [L431] void * Id_MCDC_147; [L432] void * Id_MCDC_148; [L433] int Id_MCDC_149; [L434] int Id_MCDC_150; [L435] int Id_MCDC_151; [L436] int Id_MCDC_152; [L437] int Id_MCDC_153; [L438] int Id_MCDC_154; [L439] int Id_MCDC_155; [L440] short Id_MCDC_156; [L441] short Id_MCDC_157; [L442] FILE* Id_MCDC_158; [L443] unsigned short Id_MCDC_159; [L444] unsigned short Id_MCDC_160; [L445] unsigned short Id_MCDC_161=0; [L446] unsigned short Id_MCDC_162=0; [L447] char Id_MCDC_163; [L448] char Id_MCDC_164; [L449] Id_MCDC_158 = fopen("in.eds", "r") [L450] COND FALSE !(Id_MCDC_158 == (( void * ) 0)) [L455] CALL Id_MCDC_100() [L420] int Id_MCDC_141; [L421] void * Id_MCDC_142; [L422] CALL Id_MCDC_99() [L400] CHAR Id_MCDC_139 [4]={0, 0, 0, 0}; [L401] UINT32 Id_MCDC_140=0; [L402] Id_MCDC_113.Id_MCDC_66 = ( PDO_Buffer* ) malloc(372) [L403] CALL Id_MCDC_97() [L331] UINT32 Id_MCDC_123; [L332] UINT32 Id_MCDC_124; [L333] UINT32 Id_MCDC_125; [L334] UINT32 Id_MCDC_126; [L335] UINT32 Id_MCDC_127; [L336] UINT32 Id_MCDC_128=0x00; [L337] UINT16 Id_MCDC_129; [L338] UINT32 Id_MCDC_130=0x00; [L339] UINT32 Id_MCDC_131=0x00; [L340] UINT8 Id_MCDC_35=0; [L341] UINT8 Id_MCDC_132=0; [L342] UINT8 Id_MCDC_36=0; [L343] UINT8 Id_MCDC_133=0; [L344] UINT8 Id_MCDC_134=0x00; [L345] INT32 Id_MCDC_135; [L346] void * Id_MCDC_136; [L347] UINT32* Id_MCDC_137; [L348] UINT16 Id_MCDC_138; [L349] Id_MCDC_123 = 0x1800 [L350] Id_MCDC_132 = 0 [L350] COND TRUE Id_MCDC_132 < 4 [L352] Id_MCDC_112[Id_MCDC_132] = 0x1A00 + Id_MCDC_132 [L350] Id_MCDC_132++ [L350] COND TRUE Id_MCDC_132 < 4 [L352] Id_MCDC_112[Id_MCDC_132] = 0x1A00 + Id_MCDC_132 [L350] Id_MCDC_132++ [L350] COND TRUE Id_MCDC_132 < 4 [L352] Id_MCDC_112[Id_MCDC_132] = 0x1A00 + Id_MCDC_132 [L350] Id_MCDC_132++ [L350] COND TRUE Id_MCDC_132 < 4 [L352] Id_MCDC_112[Id_MCDC_132] = 0x1A00 + Id_MCDC_132 [L350] Id_MCDC_132++ [L350] COND FALSE !(Id_MCDC_132 < 4) [L354] COND TRUE Id_MCDC_123 <= 0x1803 [L356] Id_MCDC_138 = 0 [L356] COND TRUE Id_MCDC_138 < 4 [L358] Id_MCDC_126 = Id_MCDC_123 [L359] CALL, EXPR Id_MCDC_89(Id_MCDC_123, 1, & Id_MCDC_131, & Id_MCDC_130, & Id_MCDC_135, ( void * ) & Id_MCDC_128, 0) [L193] UINT32 Id_MCDC_115=0x80000000; [L194] Od_IndexTable* Id_MCDC_116; [L195] Id_MCDC_116 = Id_MCDC_111 [L196] COND TRUE Id_MCDC_116 == (( void * ) 0) [L198] return 0x08000023; [L359] RET, EXPR Id_MCDC_89(Id_MCDC_123, 1, & Id_MCDC_131, & Id_MCDC_130, & Id_MCDC_135, ( void * ) & Id_MCDC_128, 0) [L359] COND TRUE Id_MCDC_89(Id_MCDC_123, 1, & Id_MCDC_131, & Id_MCDC_130, & Id_MCDC_135, ( void * ) & Id_MCDC_128, 0) != 0x00 [L361] return 0xFFFF; [L336] UINT32 Id_MCDC_128=0x00; [L361] return 0xFFFF; [L338] UINT32 Id_MCDC_130=0x00; [L361] return 0xFFFF; [L339] UINT32 Id_MCDC_131=0x00; [L361] return 0xFFFF; [L361] return 0xFFFF; [L361] return 0xFFFF; [L403] RET Id_MCDC_97() [L404] Id_MCDC_140 = 0 [L404] COND TRUE Id_MCDC_140 < 4 [L406] EXPR Id_MCDC_113.Id_MCDC_66 [L406] EXPR Id_MCDC_113.Id_MCDC_66->Id_MCDC_42[Id_MCDC_140].Id_MCDC_34 [L406] (Id_MCDC_113.Id_MCDC_66->Id_MCDC_42[Id_MCDC_140].Id_MCDC_34 <= 240) && (Id_MCDC_113.Id_MCDC_66->Id_MCDC_42[Id_MCDC_140].Id_MCDC_34 >= 1) [L406] EXPR Id_MCDC_113.Id_MCDC_66 [L406] EXPR Id_MCDC_113.Id_MCDC_66->Id_MCDC_42[Id_MCDC_140].Id_MCDC_34 [L406] (Id_MCDC_113.Id_MCDC_66->Id_MCDC_42[Id_MCDC_140].Id_MCDC_34 <= 240) && (Id_MCDC_113.Id_MCDC_66->Id_MCDC_42[Id_MCDC_140].Id_MCDC_34 >= 1) [L406] COND TRUE (Id_MCDC_113.Id_MCDC_66->Id_MCDC_42[Id_MCDC_140].Id_MCDC_34 <= 240) && (Id_MCDC_113.Id_MCDC_66->Id_MCDC_42[Id_MCDC_140].Id_MCDC_34 >= 1) [L408] EXPR Id_MCDC_113.Id_MCDC_66 [L408] EXPR Id_MCDC_113.Id_MCDC_66->Id_MCDC_42[Id_MCDC_140].Id_MCDC_34 [L408] Id_MCDC_139[Id_MCDC_140] = Id_MCDC_113.Id_MCDC_66->Id_MCDC_42[Id_MCDC_140].Id_MCDC_34 [L404] Id_MCDC_140++ [L404] COND TRUE Id_MCDC_140 < 4 [L406] EXPR Id_MCDC_113.Id_MCDC_66 [L406] EXPR Id_MCDC_113.Id_MCDC_66->Id_MCDC_42[Id_MCDC_140].Id_MCDC_34 [L406] (Id_MCDC_113.Id_MCDC_66->Id_MCDC_42[Id_MCDC_140].Id_MCDC_34 <= 240) && (Id_MCDC_113.Id_MCDC_66->Id_MCDC_42[Id_MCDC_140].Id_MCDC_34 >= 1) [L406] EXPR Id_MCDC_113.Id_MCDC_66 [L406] EXPR Id_MCDC_113.Id_MCDC_66->Id_MCDC_42[Id_MCDC_140].Id_MCDC_34 [L406] (Id_MCDC_113.Id_MCDC_66->Id_MCDC_42[Id_MCDC_140].Id_MCDC_34 <= 240) && (Id_MCDC_113.Id_MCDC_66->Id_MCDC_42[Id_MCDC_140].Id_MCDC_34 >= 1) [L406] COND TRUE (Id_MCDC_113.Id_MCDC_66->Id_MCDC_42[Id_MCDC_140].Id_MCDC_34 <= 240) && (Id_MCDC_113.Id_MCDC_66->Id_MCDC_42[Id_MCDC_140].Id_MCDC_34 >= 1) [L408] EXPR Id_MCDC_113.Id_MCDC_66 [L408] EXPR Id_MCDC_113.Id_MCDC_66->Id_MCDC_42[Id_MCDC_140].Id_MCDC_34 [L408] Id_MCDC_139[Id_MCDC_140] = Id_MCDC_113.Id_MCDC_66->Id_MCDC_42[Id_MCDC_140].Id_MCDC_34 [L404] Id_MCDC_140++ [L404] COND TRUE Id_MCDC_140 < 4 [L406] EXPR Id_MCDC_113.Id_MCDC_66 [L406] EXPR Id_MCDC_113.Id_MCDC_66->Id_MCDC_42[Id_MCDC_140].Id_MCDC_34 [L406] (Id_MCDC_113.Id_MCDC_66->Id_MCDC_42[Id_MCDC_140].Id_MCDC_34 <= 240) && (Id_MCDC_113.Id_MCDC_66->Id_MCDC_42[Id_MCDC_140].Id_MCDC_34 >= 1) [L406] EXPR Id_MCDC_113.Id_MCDC_66 [L406] EXPR Id_MCDC_113.Id_MCDC_66->Id_MCDC_42[Id_MCDC_140].Id_MCDC_34 [L406] (Id_MCDC_113.Id_MCDC_66->Id_MCDC_42[Id_MCDC_140].Id_MCDC_34 <= 240) && (Id_MCDC_113.Id_MCDC_66->Id_MCDC_42[Id_MCDC_140].Id_MCDC_34 >= 1) [L406] COND TRUE (Id_MCDC_113.Id_MCDC_66->Id_MCDC_42[Id_MCDC_140].Id_MCDC_34 <= 240) && (Id_MCDC_113.Id_MCDC_66->Id_MCDC_42[Id_MCDC_140].Id_MCDC_34 >= 1) [L408] EXPR Id_MCDC_113.Id_MCDC_66 [L408] EXPR Id_MCDC_113.Id_MCDC_66->Id_MCDC_42[Id_MCDC_140].Id_MCDC_34 [L408] Id_MCDC_139[Id_MCDC_140] = Id_MCDC_113.Id_MCDC_66->Id_MCDC_42[Id_MCDC_140].Id_MCDC_34 [L404] Id_MCDC_140++ [L404] COND TRUE Id_MCDC_140 < 4 [L406] EXPR Id_MCDC_113.Id_MCDC_66 [L406] EXPR Id_MCDC_113.Id_MCDC_66->Id_MCDC_42[Id_MCDC_140].Id_MCDC_34 [L406] (Id_MCDC_113.Id_MCDC_66->Id_MCDC_42[Id_MCDC_140].Id_MCDC_34 <= 240) && (Id_MCDC_113.Id_MCDC_66->Id_MCDC_42[Id_MCDC_140].Id_MCDC_34 >= 1) [L406] EXPR Id_MCDC_113.Id_MCDC_66 [L406] EXPR Id_MCDC_113.Id_MCDC_66->Id_MCDC_42[Id_MCDC_140].Id_MCDC_34 [L406] (Id_MCDC_113.Id_MCDC_66->Id_MCDC_42[Id_MCDC_140].Id_MCDC_34 <= 240) && (Id_MCDC_113.Id_MCDC_66->Id_MCDC_42[Id_MCDC_140].Id_MCDC_34 >= 1) [L406] COND TRUE (Id_MCDC_113.Id_MCDC_66->Id_MCDC_42[Id_MCDC_140].Id_MCDC_34 <= 240) && (Id_MCDC_113.Id_MCDC_66->Id_MCDC_42[Id_MCDC_140].Id_MCDC_34 >= 1) [L408] EXPR Id_MCDC_113.Id_MCDC_66 [L408] EXPR Id_MCDC_113.Id_MCDC_66->Id_MCDC_42[Id_MCDC_140].Id_MCDC_34 [L408] Id_MCDC_139[Id_MCDC_140] = Id_MCDC_113.Id_MCDC_66->Id_MCDC_42[Id_MCDC_140].Id_MCDC_34 [L404] Id_MCDC_140++ [L404] COND FALSE !(Id_MCDC_140 < 4) [L415] CALL Id_MCDC_95(4, Id_MCDC_139) [L280] UINT32 Id_MCDC_121=0; [L281] UINT32 Id_MCDC_122=0; [L282] COND FALSE !(Id_MCDC_93 < 2) [L286] COND FALSE !(Id_MCDC_93 != 2) [L292] EXPR Id_MCDC_94[1] [L292] Id_MCDC_122 = Id_MCDC_94[1] [L294] EXPR Id_MCDC_94[0] [L294] CALL, EXPR Id_MCDC_92(Id_MCDC_94[0], Id_MCDC_122) [L249] UINT32 Id_MCDC_117=0; [L250] UINT32 Id_MCDC_118=0; [L251] UINT32 Id_MCDC_119=1; [L252] UINT32 Id_MCDC_120=0; [L253] COND FALSE !(Id_MCDC_90 > Id_MCDC_91) [L259] COND FALSE !(Id_MCDC_90 < Id_MCDC_91) [L266] return Id_MCDC_90; [L294] RET, EXPR Id_MCDC_92(Id_MCDC_94[0], Id_MCDC_122) [L294] Id_MCDC_121 = Id_MCDC_92(Id_MCDC_94[0], Id_MCDC_122) [L295] CALL avoid_zero(Id_MCDC_121 != 0) [L9] COND FALSE !(!y) [L295] RET avoid_zero(Id_MCDC_121 != 0) [L296] EXPR Id_MCDC_94[0] [L296] EXPR ( long long ) (Id_MCDC_94[0] * Id_MCDC_122) >= 0 && ( long long ) (Id_MCDC_94[0] * Id_MCDC_122) <= 4294967295 [L296] EXPR Id_MCDC_94[0] [L296] EXPR ( long long ) (Id_MCDC_94[0] * Id_MCDC_122) >= 0 && ( long long ) (Id_MCDC_94[0] * Id_MCDC_122) <= 4294967295 [L296] CALL __VERIFIER_assert(( long long ) (Id_MCDC_94[0] * Id_MCDC_122) >= 0 && ( long long ) (Id_MCDC_94[0] * Id_MCDC_122) <= 4294967295) [L459] COND TRUE ! (Id_MCDC_103) [L461] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 13 procedures, 133 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 17.1s, OverallIterations: 11, TraceHistogramMax: 4, AutomataDifference: 12.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1494 SDtfs, 2333 SDslu, 1377 SDs, 0 SdLazy, 3602 SolverSat, 488 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 152 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=141occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 231 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 551 NumberOfCodeBlocks, 551 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 541 ConstructedInterpolants, 0 QuantifiedInterpolants, 118782 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 105/141 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...