/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 14:02:37,733 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 14:02:37,736 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 14:02:37,796 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 14:02:37,797 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 14:02:37,804 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 14:02:37,806 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 14:02:37,811 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 14:02:37,815 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 14:02:37,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 14:02:37,822 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 14:02:37,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 14:02:37,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 14:02:37,828 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 14:02:37,831 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 14:02:37,833 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 14:02:37,834 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 14:02:37,838 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 14:02:37,846 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 14:02:37,853 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 14:02:37,856 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 14:02:37,857 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 14:02:37,859 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 14:02:37,862 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 14:02:37,872 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 14:02:37,873 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 14:02:37,874 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 14:02:37,876 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 14:02:37,877 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 14:02:37,878 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 14:02:37,878 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 14:02:37,879 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 14:02:37,881 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 14:02:37,882 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 14:02:37,883 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 14:02:37,884 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 14:02:37,884 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 14:02:37,885 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 14:02:37,885 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 14:02:37,886 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 14:02:37,887 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 14:02:37,894 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 14:02:37,938 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 14:02:37,938 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 14:02:37,940 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 14:02:37,940 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 14:02:37,940 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 14:02:37,940 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 14:02:37,941 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 14:02:37,941 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 14:02:37,941 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 14:02:37,941 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 14:02:37,941 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 14:02:37,942 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 14:02:37,942 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 14:02:37,942 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 14:02:37,942 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 14:02:37,942 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 14:02:37,942 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 14:02:37,943 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 14:02:37,943 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 14:02:37,943 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 14:02:37,943 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 14:02:37,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 14:02:37,944 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 14:02:37,944 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 14:02:37,944 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 14:02:37,944 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 14:02:37,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 14:02:37,945 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 14:02:37,945 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 14:02:37,945 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 14:02:38,338 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 14:02:38,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 14:02:38,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 14:02:38,381 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 14:02:38,382 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 14:02:38,384 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 14:02:38,460 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a668134a7/0edaa870b95e4a7e8cfca209efd62975/FLAG561379cee [2020-10-29 14:02:39,332 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 14:02:39,332 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 14:02:39,365 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a668134a7/0edaa870b95e4a7e8cfca209efd62975/FLAG561379cee [2020-10-29 14:02:39,561 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a668134a7/0edaa870b95e4a7e8cfca209efd62975 [2020-10-29 14:02:39,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 14:02:39,575 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 14:02:39,580 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 14:02:39,580 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 14:02:39,584 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 14:02:39,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:02:39" (1/1) ... [2020-10-29 14:02:39,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24a1e375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:02:39, skipping insertion in model container [2020-10-29 14:02:39,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:02:39" (1/1) ... [2020-10-29 14:02:39,599 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 14:02:39,672 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 14:02:40,383 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:02:40,398 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 14:02:40,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:02:40,903 INFO L208 MainTranslator]: Completed translation [2020-10-29 14:02:40,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:02:40 WrapperNode [2020-10-29 14:02:40,905 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 14:02:40,907 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 14:02:40,907 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 14:02:40,907 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 14:02:40,923 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:02:40" (1/1) ... [2020-10-29 14:02:40,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:02:40" (1/1) ... [2020-10-29 14:02:40,969 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:02:40" (1/1) ... [2020-10-29 14:02:40,970 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:02:40" (1/1) ... [2020-10-29 14:02:41,015 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:02:40" (1/1) ... [2020-10-29 14:02:41,050 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:02:40" (1/1) ... [2020-10-29 14:02:41,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:02:40" (1/1) ... [2020-10-29 14:02:41,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 14:02:41,076 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 14:02:41,077 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 14:02:41,077 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 14:02:41,078 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:02:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 14:02:41,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 14:02:41,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 14:02:41,149 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 14:02:41,149 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 14:02:41,150 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 14:02:41,150 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 14:02:41,150 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 14:02:41,150 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 14:02:41,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 14:02:41,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 14:02:41,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-29 14:02:41,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 14:02:41,151 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 14:02:41,152 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 14:02:41,152 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 14:02:41,152 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 14:02:41,152 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 14:02:41,152 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 14:02:41,153 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 14:02:41,153 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 14:02:41,153 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 14:02:41,153 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 14:02:41,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 14:02:41,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 14:02:41,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 14:02:41,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 14:02:41,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 14:02:41,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 14:02:42,757 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 14:02:42,757 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 14:02:42,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:02:42 BoogieIcfgContainer [2020-10-29 14:02:42,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 14:02:42,762 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 14:02:42,762 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 14:02:42,766 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 14:02:42,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 02:02:39" (1/3) ... [2020-10-29 14:02:42,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ff06826 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:02:42, skipping insertion in model container [2020-10-29 14:02:42,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:02:40" (2/3) ... [2020-10-29 14:02:42,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ff06826 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:02:42, skipping insertion in model container [2020-10-29 14:02:42,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:02:42" (3/3) ... [2020-10-29 14:02:42,770 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 14:02:42,784 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 14:02:42,790 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 14:02:42,806 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 14:02:42,841 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 14:02:42,841 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 14:02:42,841 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 14:02:42,841 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 14:02:42,841 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 14:02:42,842 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 14:02:42,842 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 14:02:42,842 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 14:02:42,905 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states. [2020-10-29 14:02:42,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-29 14:02:42,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:02:42,925 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:02:42,925 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:02:42,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:02:42,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1681594957, now seen corresponding path program 1 times [2020-10-29 14:02:42,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:02:42,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1196730642] [2020-10-29 14:02:42,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:02:43,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:43,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:43,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:44,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:44,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:44,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:44,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:44,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:44,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:44,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:45,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:46,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:47,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:48,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:48,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 14:02:48,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 14:02:48,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-29 14:02:48,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:48,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:48,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:02:48,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-29 14:02:48,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 14:02:48,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 14:02:48,984 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 14:02:48,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:02:49,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:49,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:49,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:49,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:02:49,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:02:49,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 14:02:49,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:49,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:49,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:02:49,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:02:49,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:02:49,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:02:49,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:02:49,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1196730642] [2020-10-29 14:02:49,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:02:49,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:02:49,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75034803] [2020-10-29 14:02:49,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:02:49,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:02:49,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:02:49,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:02:49,223 INFO L87 Difference]: Start difference. First operand 433 states. Second operand 4 states. [2020-10-29 14:02:49,737 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-29 14:02:53,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:02:53,373 INFO L93 Difference]: Finished difference Result 791 states and 1387 transitions. [2020-10-29 14:02:53,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:02:53,375 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2020-10-29 14:02:53,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:02:53,398 INFO L225 Difference]: With dead ends: 791 [2020-10-29 14:02:53,398 INFO L226 Difference]: Without dead ends: 624 [2020-10-29 14:02:53,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:02:53,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2020-10-29 14:02:53,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 621. [2020-10-29 14:02:53,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-10-29 14:02:53,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 915 transitions. [2020-10-29 14:02:53,534 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 915 transitions. Word has length 155 [2020-10-29 14:02:53,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:02:53,535 INFO L481 AbstractCegarLoop]: Abstraction has 621 states and 915 transitions. [2020-10-29 14:02:53,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:02:53,536 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 915 transitions. [2020-10-29 14:02:53,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-29 14:02:53,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:02:53,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:02:53,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 14:02:53,552 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:02:53,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:02:53,553 INFO L82 PathProgramCache]: Analyzing trace with hash 942881184, now seen corresponding path program 1 times [2020-10-29 14:02:53,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:02:53,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761424509] [2020-10-29 14:02:53,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:02:53,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:53,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:53,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:53,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:54,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:54,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:54,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:54,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:54,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:54,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:55,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:55,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:56,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:58,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:58,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 14:02:58,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 14:02:58,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 14:02:58,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:58,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:58,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:02:58,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 14:02:58,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-29 14:02:58,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:02:59,213 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 14:02:59,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:02:59,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:59,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:59,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:59,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:02:59,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:02:59,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 14:02:59,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:59,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:59,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:02:59,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:02:59,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:02:59,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:02:59,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:02:59,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761424509] [2020-10-29 14:02:59,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:02:59,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:02:59,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396135304] [2020-10-29 14:02:59,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:02:59,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:02:59,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:02:59,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:02:59,338 INFO L87 Difference]: Start difference. First operand 621 states and 915 transitions. Second operand 4 states. [2020-10-29 14:02:59,769 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-29 14:03:02,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:03:02,521 INFO L93 Difference]: Finished difference Result 1265 states and 1919 transitions. [2020-10-29 14:03:02,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:03:02,529 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2020-10-29 14:03:02,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:03:02,540 INFO L225 Difference]: With dead ends: 1265 [2020-10-29 14:03:02,540 INFO L226 Difference]: Without dead ends: 1042 [2020-10-29 14:03:02,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:03:02,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2020-10-29 14:03:02,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 1039. [2020-10-29 14:03:02,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2020-10-29 14:03:02,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1554 transitions. [2020-10-29 14:03:02,625 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1554 transitions. Word has length 155 [2020-10-29 14:03:02,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:03:02,627 INFO L481 AbstractCegarLoop]: Abstraction has 1039 states and 1554 transitions. [2020-10-29 14:03:02,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:03:02,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1554 transitions. [2020-10-29 14:03:02,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-29 14:03:02,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:03:02,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:03:02,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 14:03:02,634 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:03:02,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:03:02,637 INFO L82 PathProgramCache]: Analyzing trace with hash 932384119, now seen corresponding path program 1 times [2020-10-29 14:03:02,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:03:02,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [124064341] [2020-10-29 14:03:02,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:03:02,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:02,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:02,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:02,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:03,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:03,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:03,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:03,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:03,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:03,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:03,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:04,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:04,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:07,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:07,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 14:03:07,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 14:03:07,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 14:03:07,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:07,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:07,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:03:07,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:03:07,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 14:03:07,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:03:08,264 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 14:03:08,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:03:08,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:08,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:08,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:08,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:03:08,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:03:08,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 14:03:08,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:08,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:08,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:03:08,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:03:08,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:03:08,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:03:08,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:03:08,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [124064341] [2020-10-29 14:03:08,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:03:08,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:03:08,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115918193] [2020-10-29 14:03:08,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:03:08,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:03:08,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:03:08,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:03:08,371 INFO L87 Difference]: Start difference. First operand 1039 states and 1554 transitions. Second operand 5 states. [2020-10-29 14:03:11,267 WARN L193 SmtUtils]: Spent 455.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 14:03:12,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:03:12,739 INFO L93 Difference]: Finished difference Result 3020 states and 4504 transitions. [2020-10-29 14:03:12,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:03:12,740 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-29 14:03:12,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:03:12,752 INFO L225 Difference]: With dead ends: 3020 [2020-10-29 14:03:12,752 INFO L226 Difference]: Without dead ends: 2004 [2020-10-29 14:03:12,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:03:12,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2004 states. [2020-10-29 14:03:12,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2004 to 1959. [2020-10-29 14:03:12,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2020-10-29 14:03:12,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 2913 transitions. [2020-10-29 14:03:12,852 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 2913 transitions. Word has length 155 [2020-10-29 14:03:12,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:03:12,852 INFO L481 AbstractCegarLoop]: Abstraction has 1959 states and 2913 transitions. [2020-10-29 14:03:12,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:03:12,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 2913 transitions. [2020-10-29 14:03:12,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-29 14:03:12,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:03:12,857 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:03:12,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 14:03:12,857 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:03:12,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:03:12,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1196576174, now seen corresponding path program 1 times [2020-10-29 14:03:12,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:03:12,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604691851] [2020-10-29 14:03:12,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:03:12,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:12,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:12,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:13,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:13,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:13,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:13,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:13,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:14,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:15,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:16,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:16,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:16,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:17,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:17,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-29 14:03:17,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 14:03:17,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-29 14:03:17,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:17,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:17,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:03:17,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:03:17,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 14:03:17,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 14:03:18,469 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 14:03:18,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:03:18,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:18,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:18,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:18,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:03:18,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:03:18,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 14:03:18,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:18,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:18,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:03:18,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:03:18,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:03:18,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:03:18,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:03:18,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604691851] [2020-10-29 14:03:18,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:03:18,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:03:18,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162033798] [2020-10-29 14:03:18,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:03:18,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:03:18,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:03:18,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:03:18,633 INFO L87 Difference]: Start difference. First operand 1959 states and 2913 transitions. Second operand 5 states. [2020-10-29 14:03:21,636 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 14:03:23,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:03:23,140 INFO L93 Difference]: Finished difference Result 5720 states and 8482 transitions. [2020-10-29 14:03:23,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:03:23,144 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-29 14:03:23,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:03:23,165 INFO L225 Difference]: With dead ends: 5720 [2020-10-29 14:03:23,165 INFO L226 Difference]: Without dead ends: 3788 [2020-10-29 14:03:23,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:03:23,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3788 states. [2020-10-29 14:03:23,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3788 to 3743. [2020-10-29 14:03:23,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3743 states. [2020-10-29 14:03:23,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3743 states to 3743 states and 5520 transitions. [2020-10-29 14:03:23,350 INFO L78 Accepts]: Start accepts. Automaton has 3743 states and 5520 transitions. Word has length 156 [2020-10-29 14:03:23,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:03:23,351 INFO L481 AbstractCegarLoop]: Abstraction has 3743 states and 5520 transitions. [2020-10-29 14:03:23,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:03:23,351 INFO L276 IsEmpty]: Start isEmpty. Operand 3743 states and 5520 transitions. [2020-10-29 14:03:23,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-29 14:03:23,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:03:23,358 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:03:23,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 14:03:23,359 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:03:23,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:03:23,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1645450987, now seen corresponding path program 1 times [2020-10-29 14:03:23,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:03:23,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1721633249] [2020-10-29 14:03:23,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:03:23,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:23,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:23,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:23,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:23,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:23,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:23,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:23,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:24,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:27,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:27,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:28,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:28,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-29 14:03:28,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 14:03:28,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 14:03:28,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:28,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:28,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:03:28,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:03:28,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 14:03:28,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:03:28,922 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 14:03:28,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:03:28,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:28,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:28,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:28,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:03:28,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:03:28,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 14:03:28,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:28,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:28,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:03:28,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:03:28,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:03:28,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:03:29,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:03:29,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1721633249] [2020-10-29 14:03:29,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:03:29,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:03:29,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825994865] [2020-10-29 14:03:29,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:03:29,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:03:29,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:03:29,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:03:29,021 INFO L87 Difference]: Start difference. First operand 3743 states and 5520 transitions. Second operand 5 states. [2020-10-29 14:03:32,040 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 14:03:33,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:03:33,045 INFO L93 Difference]: Finished difference Result 10966 states and 16119 transitions. [2020-10-29 14:03:33,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:03:33,046 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-29 14:03:33,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:03:33,081 INFO L225 Difference]: With dead ends: 10966 [2020-10-29 14:03:33,081 INFO L226 Difference]: Without dead ends: 7236 [2020-10-29 14:03:33,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:03:33,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7236 states. [2020-10-29 14:03:33,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7236 to 7191. [2020-10-29 14:03:33,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7191 states. [2020-10-29 14:03:33,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7191 states to 7191 states and 10474 transitions. [2020-10-29 14:03:33,437 INFO L78 Accepts]: Start accepts. Automaton has 7191 states and 10474 transitions. Word has length 157 [2020-10-29 14:03:33,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:03:33,437 INFO L481 AbstractCegarLoop]: Abstraction has 7191 states and 10474 transitions. [2020-10-29 14:03:33,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:03:33,437 INFO L276 IsEmpty]: Start isEmpty. Operand 7191 states and 10474 transitions. [2020-10-29 14:03:33,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-29 14:03:33,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:03:33,449 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:03:33,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 14:03:33,450 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:03:33,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:03:33,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1891500340, now seen corresponding path program 1 times [2020-10-29 14:03:33,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:03:33,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132999641] [2020-10-29 14:03:33,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:03:33,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:33,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:33,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:33,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:33,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:33,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:33,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:34,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:34,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:34,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:34,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:36,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:36,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:37,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:37,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:38,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:38,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-29 14:03:38,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 14:03:38,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 14:03:38,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:38,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:38,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:03:38,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:03:38,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 14:03:38,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:03:39,148 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 14:03:39,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:03:39,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:39,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:39,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:39,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:03:39,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:03:39,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 14:03:39,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:39,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:39,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:03:39,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:03:39,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:03:39,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:03:39,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:03:39,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [132999641] [2020-10-29 14:03:39,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:03:39,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:03:39,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855709091] [2020-10-29 14:03:39,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:03:39,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:03:39,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:03:39,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:03:39,298 INFO L87 Difference]: Start difference. First operand 7191 states and 10474 transitions. Second operand 5 states. [2020-10-29 14:03:42,491 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 14:03:44,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:03:44,343 INFO L93 Difference]: Finished difference Result 20825 states and 30260 transitions. [2020-10-29 14:03:44,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:03:44,344 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-10-29 14:03:44,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:03:44,405 INFO L225 Difference]: With dead ends: 20825 [2020-10-29 14:03:44,405 INFO L226 Difference]: Without dead ends: 13880 [2020-10-29 14:03:44,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:03:44,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13880 states. [2020-10-29 14:03:45,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13880 to 13849. [2020-10-29 14:03:45,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13849 states. [2020-10-29 14:03:45,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13849 states to 13849 states and 19887 transitions. [2020-10-29 14:03:45,249 INFO L78 Accepts]: Start accepts. Automaton has 13849 states and 19887 transitions. Word has length 158 [2020-10-29 14:03:45,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:03:45,250 INFO L481 AbstractCegarLoop]: Abstraction has 13849 states and 19887 transitions. [2020-10-29 14:03:45,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:03:45,250 INFO L276 IsEmpty]: Start isEmpty. Operand 13849 states and 19887 transitions. [2020-10-29 14:03:45,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-29 14:03:45,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:03:45,271 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:03:45,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 14:03:45,272 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:03:45,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:03:45,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1876779988, now seen corresponding path program 1 times [2020-10-29 14:03:45,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:03:45,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560404676] [2020-10-29 14:03:45,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:03:45,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:45,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:45,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:45,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:45,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:45,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:45,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:47,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:49,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:49,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:50,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:50,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-29 14:03:50,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:03:50,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 14:03:50,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:50,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:50,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:03:50,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:03:50,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 14:03:50,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:03:50,800 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 14:03:50,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:03:50,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:50,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:50,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:50,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:03:50,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:03:50,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 14:03:50,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:50,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:50,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:03:50,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:03:50,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:03:50,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:03:50,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:03:50,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560404676] [2020-10-29 14:03:50,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:03:50,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:03:50,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995051528] [2020-10-29 14:03:50,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:03:50,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:03:50,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:03:50,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:03:50,945 INFO L87 Difference]: Start difference. First operand 13849 states and 19887 transitions. Second operand 5 states. [2020-10-29 14:03:53,899 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 14:03:55,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:03:55,576 INFO L93 Difference]: Finished difference Result 37457 states and 53502 transitions. [2020-10-29 14:03:55,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:03:55,582 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-29 14:03:55,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:03:55,633 INFO L225 Difference]: With dead ends: 37457 [2020-10-29 14:03:55,633 INFO L226 Difference]: Without dead ends: 23764 [2020-10-29 14:03:55,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:03:55,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23764 states. [2020-10-29 14:03:56,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23764 to 23707. [2020-10-29 14:03:56,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23707 states. [2020-10-29 14:03:56,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23707 states to 23707 states and 33408 transitions. [2020-10-29 14:03:56,905 INFO L78 Accepts]: Start accepts. Automaton has 23707 states and 33408 transitions. Word has length 159 [2020-10-29 14:03:56,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:03:56,905 INFO L481 AbstractCegarLoop]: Abstraction has 23707 states and 33408 transitions. [2020-10-29 14:03:56,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:03:56,905 INFO L276 IsEmpty]: Start isEmpty. Operand 23707 states and 33408 transitions. [2020-10-29 14:03:56,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-29 14:03:56,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:03:56,937 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:03:56,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 14:03:56,938 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:03:56,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:03:56,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1629231412, now seen corresponding path program 1 times [2020-10-29 14:03:56,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:03:56,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753085890] [2020-10-29 14:03:56,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:03:56,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:56,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:57,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:57,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:57,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:57,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:57,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:59,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:59,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:01,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:01,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-29 14:04:01,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 14:04:01,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 14:04:01,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:01,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:01,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:04:01,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:04:01,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 14:04:01,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:02,492 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 14:04:02,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:04:02,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:02,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:02,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:02,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:04:02,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:04:02,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 14:04:02,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:02,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:02,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:04:02,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:04:02,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:04:02,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:02,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:04:02,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753085890] [2020-10-29 14:04:02,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:04:02,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:04:02,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374527031] [2020-10-29 14:04:02,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:04:02,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:04:02,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:04:02,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:04:02,577 INFO L87 Difference]: Start difference. First operand 23707 states and 33408 transitions. Second operand 5 states. [2020-10-29 14:04:06,453 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 14:04:08,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:04:08,372 INFO L93 Difference]: Finished difference Result 62475 states and 87848 transitions. [2020-10-29 14:04:08,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:04:08,372 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-10-29 14:04:08,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:04:08,444 INFO L225 Difference]: With dead ends: 62475 [2020-10-29 14:04:08,444 INFO L226 Difference]: Without dead ends: 40742 [2020-10-29 14:04:08,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:04:08,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40742 states. [2020-10-29 14:04:10,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40742 to 40715. [2020-10-29 14:04:10,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40715 states. [2020-10-29 14:04:10,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40715 states to 40715 states and 56210 transitions. [2020-10-29 14:04:10,883 INFO L78 Accepts]: Start accepts. Automaton has 40715 states and 56210 transitions. Word has length 160 [2020-10-29 14:04:10,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:04:10,883 INFO L481 AbstractCegarLoop]: Abstraction has 40715 states and 56210 transitions. [2020-10-29 14:04:10,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:04:10,883 INFO L276 IsEmpty]: Start isEmpty. Operand 40715 states and 56210 transitions. [2020-10-29 14:04:10,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-29 14:04:10,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:04:10,925 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:04:10,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 14:04:10,926 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:04:10,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:04:10,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1964651380, now seen corresponding path program 1 times [2020-10-29 14:04:10,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:04:10,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1667920446] [2020-10-29 14:04:10,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:04:10,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:11,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:11,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:11,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:11,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:11,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:11,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:15,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:15,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-29 14:04:15,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:04:15,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 14:04:15,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:15,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:15,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:04:15,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 14:04:15,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 14:04:15,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:16,458 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 14:04:16,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:04:16,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:16,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:16,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:16,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:04:16,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:04:16,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 14:04:16,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:16,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:16,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:04:16,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:04:16,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:04:16,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:16,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:04:16,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1667920446] [2020-10-29 14:04:16,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:04:16,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:04:16,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117711537] [2020-10-29 14:04:16,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:04:16,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:04:16,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:04:16,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:04:16,509 INFO L87 Difference]: Start difference. First operand 40715 states and 56210 transitions. Second operand 5 states. [2020-10-29 14:04:19,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:04:19,926 INFO L93 Difference]: Finished difference Result 71071 states and 98218 transitions. [2020-10-29 14:04:19,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:04:19,926 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-10-29 14:04:19,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:04:19,973 INFO L225 Difference]: With dead ends: 71071 [2020-10-29 14:04:19,973 INFO L226 Difference]: Without dead ends: 30464 [2020-10-29 14:04:20,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:04:20,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30464 states. [2020-10-29 14:04:21,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30464 to 30464. [2020-10-29 14:04:21,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30464 states. [2020-10-29 14:04:21,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30464 states to 30464 states and 42152 transitions. [2020-10-29 14:04:21,766 INFO L78 Accepts]: Start accepts. Automaton has 30464 states and 42152 transitions. Word has length 161 [2020-10-29 14:04:21,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:04:21,766 INFO L481 AbstractCegarLoop]: Abstraction has 30464 states and 42152 transitions. [2020-10-29 14:04:21,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:04:21,766 INFO L276 IsEmpty]: Start isEmpty. Operand 30464 states and 42152 transitions. [2020-10-29 14:04:21,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-29 14:04:21,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:04:21,792 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:04:21,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 14:04:21,792 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:04:21,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:04:21,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1556514277, now seen corresponding path program 1 times [2020-10-29 14:04:21,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:04:21,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334608192] [2020-10-29 14:04:21,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:04:21,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:21,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:21,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:22,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:22,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:22,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:22,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:22,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:26,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:26,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-29 14:04:26,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:04:26,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 14:04:26,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:26,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:26,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 14:04:26,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 14:04:26,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-29 14:04:26,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:27,353 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 14:04:27,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:04:27,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:27,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:27,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:27,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:04:27,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:04:27,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 14:04:27,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:27,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:27,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:04:27,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:04:27,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 14:04:27,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:27,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:04:27,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334608192] [2020-10-29 14:04:27,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:04:27,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 14:04:27,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715020314] [2020-10-29 14:04:27,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 14:04:27,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:04:27,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 14:04:27,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-29 14:04:27,456 INFO L87 Difference]: Start difference. First operand 30464 states and 42152 transitions. Second operand 9 states. [2020-10-29 14:04:27,951 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 14:04:31,803 WARN L193 SmtUtils]: Spent 491.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-29 14:04:32,342 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2020-10-29 14:04:35,725 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-10-29 14:04:36,452 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2020-10-29 14:04:39,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:04:39,046 INFO L93 Difference]: Finished difference Result 115832 states and 166272 transitions. [2020-10-29 14:04:39,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 14:04:39,046 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 165 [2020-10-29 14:04:39,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:04:39,157 INFO L225 Difference]: With dead ends: 115832 [2020-10-29 14:04:39,157 INFO L226 Difference]: Without dead ends: 88681 [2020-10-29 14:04:39,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=154, Invalid=308, Unknown=0, NotChecked=0, Total=462 [2020-10-29 14:04:39,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88681 states. [2020-10-29 14:04:43,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88681 to 49064. [2020-10-29 14:04:43,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49064 states. [2020-10-29 14:04:43,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49064 states to 49064 states and 67744 transitions. [2020-10-29 14:04:43,068 INFO L78 Accepts]: Start accepts. Automaton has 49064 states and 67744 transitions. Word has length 165 [2020-10-29 14:04:43,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:04:43,068 INFO L481 AbstractCegarLoop]: Abstraction has 49064 states and 67744 transitions. [2020-10-29 14:04:43,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 14:04:43,068 INFO L276 IsEmpty]: Start isEmpty. Operand 49064 states and 67744 transitions. [2020-10-29 14:04:43,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-29 14:04:43,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:04:43,096 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:04:43,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 14:04:43,097 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:04:43,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:04:43,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1705293909, now seen corresponding path program 1 times [2020-10-29 14:04:43,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:04:43,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067974212] [2020-10-29 14:04:43,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:04:43,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:43,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:43,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:43,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:43,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:43,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:43,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:48,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:48,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-29 14:04:48,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:04:48,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 14:04:48,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:48,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:48,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:04:48,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 14:04:48,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 14:04:48,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:48,638 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 14:04:48,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:04:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:48,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:48,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:48,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:04:48,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:04:48,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 14:04:48,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:48,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:48,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:04:48,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:04:48,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:04:48,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:48,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:04:48,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067974212] [2020-10-29 14:04:48,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:04:48,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:04:48,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676223506] [2020-10-29 14:04:48,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:04:48,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:04:48,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:04:48,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:04:48,707 INFO L87 Difference]: Start difference. First operand 49064 states and 67744 transitions. Second operand 5 states. [2020-10-29 14:04:53,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:04:53,036 INFO L93 Difference]: Finished difference Result 84469 states and 116623 transitions. [2020-10-29 14:04:53,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:04:53,036 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-10-29 14:04:53,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:04:53,078 INFO L225 Difference]: With dead ends: 84469 [2020-10-29 14:04:53,078 INFO L226 Difference]: Without dead ends: 35902 [2020-10-29 14:04:53,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:04:53,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35902 states. [2020-10-29 14:04:55,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35902 to 35890. [2020-10-29 14:04:55,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35890 states. [2020-10-29 14:04:55,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35890 states to 35890 states and 49438 transitions. [2020-10-29 14:04:55,567 INFO L78 Accepts]: Start accepts. Automaton has 35890 states and 49438 transitions. Word has length 165 [2020-10-29 14:04:55,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:04:55,567 INFO L481 AbstractCegarLoop]: Abstraction has 35890 states and 49438 transitions. [2020-10-29 14:04:55,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:04:55,567 INFO L276 IsEmpty]: Start isEmpty. Operand 35890 states and 49438 transitions. [2020-10-29 14:04:55,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-29 14:04:55,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:04:55,588 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:04:55,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 14:04:55,589 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:04:55,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:04:55,589 INFO L82 PathProgramCache]: Analyzing trace with hash 2066681168, now seen corresponding path program 1 times [2020-10-29 14:04:55,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:04:55,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [276191569] [2020-10-29 14:04:55,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:04:55,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:55,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:55,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:55,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:55,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:55,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:55,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:00,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:05:00,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-29 14:05:00,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:05:00,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 14:05:00,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:05:00,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:05:00,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 14:05:00,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 14:05:00,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-29 14:05:00,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:05:01,162 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 14:05:01,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:05:01,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:05:01,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:01,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:05:01,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:05:01,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:05:01,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 14:05:01,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:05:01,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:05:01,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:05:01,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:05:01,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 14:05:01,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:05:01,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:05:01,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [276191569] [2020-10-29 14:05:01,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:05:01,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 14:05:01,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581143112] [2020-10-29 14:05:01,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 14:05:01,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:05:01,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 14:05:01,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-29 14:05:01,259 INFO L87 Difference]: Start difference. First operand 35890 states and 49438 transitions. Second operand 9 states. [2020-10-29 14:05:01,854 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 14:05:06,351 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-29 14:05:06,942 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2020-10-29 14:05:10,035 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2020-10-29 14:05:10,849 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-10-29 14:05:15,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:05:15,186 INFO L93 Difference]: Finished difference Result 138360 states and 194671 transitions. [2020-10-29 14:05:15,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 14:05:15,188 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2020-10-29 14:05:15,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:05:15,336 INFO L225 Difference]: With dead ends: 138360 [2020-10-29 14:05:15,336 INFO L226 Difference]: Without dead ends: 107437 [2020-10-29 14:05:15,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=169, Invalid=337, Unknown=0, NotChecked=0, Total=506 [2020-10-29 14:05:15,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107437 states. [2020-10-29 14:05:20,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107437 to 59676. [2020-10-29 14:05:20,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59676 states. [2020-10-29 14:05:20,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59676 states to 59676 states and 82095 transitions. [2020-10-29 14:05:20,651 INFO L78 Accepts]: Start accepts. Automaton has 59676 states and 82095 transitions. Word has length 168 [2020-10-29 14:05:20,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:05:20,652 INFO L481 AbstractCegarLoop]: Abstraction has 59676 states and 82095 transitions. [2020-10-29 14:05:20,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 14:05:20,652 INFO L276 IsEmpty]: Start isEmpty. Operand 59676 states and 82095 transitions. [2020-10-29 14:05:20,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-29 14:05:20,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:05:20,684 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:05:20,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 14:05:20,684 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:05:20,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:05:20,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1513983570, now seen corresponding path program 1 times [2020-10-29 14:05:20,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:05:20,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147379503] [2020-10-29 14:05:20,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:05:20,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:05:20,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:20,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:20,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:20,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:21,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:22,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:22,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:22,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:23,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:23,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:25,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:05:25,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-29 14:05:25,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 14:05:25,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 14:05:25,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:05:25,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:05:25,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:05:25,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:05:25,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-29 14:05:25,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:05:26,247 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 14:05:26,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:05:26,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:05:26,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:26,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:05:26,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:05:26,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:05:26,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 14:05:26,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:05:26,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:05:26,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:05:26,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:05:26,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:05:26,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:05:26,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:05:26,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147379503] [2020-10-29 14:05:26,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:05:26,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:05:26,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860731971] [2020-10-29 14:05:26,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:05:26,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:05:26,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:05:26,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:05:26,364 INFO L87 Difference]: Start difference. First operand 59676 states and 82095 transitions. Second operand 5 states. [2020-10-29 14:05:26,816 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-29 14:05:35,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:05:35,570 INFO L93 Difference]: Finished difference Result 111436 states and 153344 transitions. [2020-10-29 14:05:35,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:05:35,571 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-10-29 14:05:35,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:05:35,635 INFO L225 Difference]: With dead ends: 111436 [2020-10-29 14:05:35,636 INFO L226 Difference]: Without dead ends: 59685 [2020-10-29 14:05:35,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:05:35,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59685 states. [2020-10-29 14:05:41,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59685 to 59652. [2020-10-29 14:05:41,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59652 states. [2020-10-29 14:05:41,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59652 states to 59652 states and 81869 transitions. [2020-10-29 14:05:41,091 INFO L78 Accepts]: Start accepts. Automaton has 59652 states and 81869 transitions. Word has length 168 [2020-10-29 14:05:41,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:05:41,091 INFO L481 AbstractCegarLoop]: Abstraction has 59652 states and 81869 transitions. [2020-10-29 14:05:41,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:05:41,091 INFO L276 IsEmpty]: Start isEmpty. Operand 59652 states and 81869 transitions. [2020-10-29 14:05:41,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-29 14:05:41,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:05:41,114 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:05:41,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 14:05:41,115 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:05:41,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:05:41,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1079000081, now seen corresponding path program 1 times [2020-10-29 14:05:41,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:05:41,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [109849695] [2020-10-29 14:05:41,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:05:41,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:05:41,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:41,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:41,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:41,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:41,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:46,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:05:46,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-29 14:05:46,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 14:05:46,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 14:05:46,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:05:46,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:05:46,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:05:46,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 14:05:46,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 14:05:46,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:05:46,644 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 14:05:46,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:05:46,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:05:46,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:46,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:05:46,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:05:46,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:05:46,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 14:05:46,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:05:46,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:05:46,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:05:46,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:05:46,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:05:46,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:05:46,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:05:46,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [109849695] [2020-10-29 14:05:46,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:05:46,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:05:46,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962438519] [2020-10-29 14:05:46,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:05:46,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:05:46,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:05:46,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:05:46,696 INFO L87 Difference]: Start difference. First operand 59652 states and 81869 transitions. Second operand 5 states. [2020-10-29 14:05:52,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:05:52,780 INFO L93 Difference]: Finished difference Result 106768 states and 146395 transitions. [2020-10-29 14:05:52,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:05:52,780 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-10-29 14:05:52,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:05:52,834 INFO L225 Difference]: With dead ends: 106768 [2020-10-29 14:05:52,835 INFO L226 Difference]: Without dead ends: 47585 [2020-10-29 14:05:52,876 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:05:52,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47585 states. [2020-10-29 14:05:56,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47585 to 47585. [2020-10-29 14:05:56,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47585 states. [2020-10-29 14:05:57,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47585 states to 47585 states and 65059 transitions. [2020-10-29 14:05:57,046 INFO L78 Accepts]: Start accepts. Automaton has 47585 states and 65059 transitions. Word has length 169 [2020-10-29 14:05:57,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:05:57,046 INFO L481 AbstractCegarLoop]: Abstraction has 47585 states and 65059 transitions. [2020-10-29 14:05:57,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:05:57,046 INFO L276 IsEmpty]: Start isEmpty. Operand 47585 states and 65059 transitions. [2020-10-29 14:05:57,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-29 14:05:57,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:05:57,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:05:57,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 14:05:57,063 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:05:57,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:05:57,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1942452122, now seen corresponding path program 1 times [2020-10-29 14:05:57,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:05:57,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953614298] [2020-10-29 14:05:57,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:05:57,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:05:57,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:57,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:57,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:57,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:57,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:01,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:01,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:01,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:02,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:06:02,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-29 14:06:02,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 14:06:02,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 14:06:02,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:06:02,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:06:02,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 14:06:02,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 14:06:02,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-29 14:06:02,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:06:02,636 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 14:06:02,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:06:02,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:06:02,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:02,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:06:02,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:06:02,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:06:02,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 14:06:02,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:06:02,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:06:02,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:06:02,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:06:02,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 14:06:02,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:06:02,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:06:02,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953614298] [2020-10-29 14:06:02,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:06:02,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 14:06:02,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325908771] [2020-10-29 14:06:02,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 14:06:02,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:06:02,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 14:06:02,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-29 14:06:02,786 INFO L87 Difference]: Start difference. First operand 47585 states and 65059 transitions. Second operand 9 states. [2020-10-29 14:06:03,310 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 14:06:07,956 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-29 14:06:08,516 WARN L193 SmtUtils]: Spent 474.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2020-10-29 14:06:11,381 WARN L193 SmtUtils]: Spent 567.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2020-10-29 14:06:12,038 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 234