/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/array-crafted/zero_sum_const_m4.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 08:47:13,030 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 08:47:13,033 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 08:47:13,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 08:47:13,070 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 08:47:13,072 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 08:47:13,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 08:47:13,081 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 08:47:13,084 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 08:47:13,085 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 08:47:13,087 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 08:47:13,090 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 08:47:13,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 08:47:13,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 08:47:13,098 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 08:47:13,101 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 08:47:13,102 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 08:47:13,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 08:47:13,111 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 08:47:13,115 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 08:47:13,119 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 08:47:13,121 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 08:47:13,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 08:47:13,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 08:47:13,135 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 08:47:13,135 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 08:47:13,136 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 08:47:13,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 08:47:13,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 08:47:13,139 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 08:47:13,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 08:47:13,140 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 08:47:13,141 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 08:47:13,142 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 08:47:13,143 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 08:47:13,143 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 08:47:13,144 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 08:47:13,144 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 08:47:13,144 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 08:47:13,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 08:47:13,146 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 08:47:13,147 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 [2020-10-28 08:47:13,175 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 08:47:13,175 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 08:47:13,177 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 08:47:13,177 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 08:47:13,177 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 08:47:13,178 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 08:47:13,178 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 08:47:13,178 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 08:47:13,178 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 08:47:13,178 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 08:47:13,179 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 08:47:13,179 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 08:47:13,179 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 08:47:13,179 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 08:47:13,179 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 08:47:13,180 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 08:47:13,180 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 08:47:13,180 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 08:47:13,180 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 08:47:13,180 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 08:47:13,181 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 08:47:13,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 08:47:13,181 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 08:47:13,181 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 08:47:13,181 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 08:47:13,182 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 08:47:13,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 08:47:13,182 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 08:47:13,182 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 08:47:13,182 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 08:47:13,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 08:47:13,663 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 08:47:13,666 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 08:47:13,668 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 08:47:13,669 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 08:47:13,671 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/zero_sum_const_m4.c [2020-10-28 08:47:13,763 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/826f0a6e3/a87389d8a0864f3c93699b844252c5ee/FLAG79606e085 [2020-10-28 08:47:14,378 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 08:47:14,378 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/zero_sum_const_m4.c [2020-10-28 08:47:14,386 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/826f0a6e3/a87389d8a0864f3c93699b844252c5ee/FLAG79606e085 [2020-10-28 08:47:14,744 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/826f0a6e3/a87389d8a0864f3c93699b844252c5ee [2020-10-28 08:47:14,748 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 08:47:14,755 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 08:47:14,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 08:47:14,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 08:47:14,761 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 08:47:14,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:47:14" (1/1) ... [2020-10-28 08:47:14,765 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7db2333e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:47:14, skipping insertion in model container [2020-10-28 08:47:14,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:47:14" (1/1) ... [2020-10-28 08:47:14,775 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 08:47:14,792 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 08:47:14,981 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 08:47:15,002 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 08:47:15,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 08:47:15,070 INFO L208 MainTranslator]: Completed translation [2020-10-28 08:47:15,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:47:15 WrapperNode [2020-10-28 08:47:15,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 08:47:15,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 08:47:15,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 08:47:15,072 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 08:47:15,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:47:15" (1/1) ... [2020-10-28 08:47:15,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:47:15" (1/1) ... [2020-10-28 08:47:15,094 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:47:15" (1/1) ... [2020-10-28 08:47:15,095 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:47:15" (1/1) ... [2020-10-28 08:47:15,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:47:15" (1/1) ... [2020-10-28 08:47:15,114 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:47:15" (1/1) ... [2020-10-28 08:47:15,116 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:47:15" (1/1) ... [2020-10-28 08:47:15,119 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 08:47:15,121 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 08:47:15,121 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 08:47:15,121 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 08:47:15,122 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:47:15" (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 [2020-10-28 08:47:15,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 08:47:15,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 08:47:15,212 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 08:47:15,213 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 08:47:15,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 08:47:15,213 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 08:47:15,213 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 08:47:15,213 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 08:47:15,213 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 08:47:15,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 08:47:15,214 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 08:47:15,214 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 08:47:15,214 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-28 08:47:15,214 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 08:47:15,214 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 08:47:15,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 08:47:15,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 08:47:15,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 08:47:15,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 08:47:15,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 08:47:15,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 08:47:15,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 08:47:15,753 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 08:47:15,756 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-28 08:47:15,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:47:15 BoogieIcfgContainer [2020-10-28 08:47:15,759 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 08:47:15,766 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 08:47:15,767 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 08:47:15,770 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 08:47:15,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:47:14" (1/3) ... [2020-10-28 08:47:15,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6994d316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:47:15, skipping insertion in model container [2020-10-28 08:47:15,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:47:15" (2/3) ... [2020-10-28 08:47:15,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6994d316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:47:15, skipping insertion in model container [2020-10-28 08:47:15,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:47:15" (3/3) ... [2020-10-28 08:47:15,783 INFO L111 eAbstractionObserver]: Analyzing ICFG zero_sum_const_m4.c [2020-10-28 08:47:15,799 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 08:47:15,805 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 08:47:15,820 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 08:47:15,869 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 08:47:15,869 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 08:47:15,869 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 08:47:15,869 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 08:47:15,870 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 08:47:15,870 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 08:47:15,870 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 08:47:15,870 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 08:47:15,897 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-10-28 08:47:15,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-28 08:47:15,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:47:15,910 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] [2020-10-28 08:47:15,910 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:47:15,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:47:15,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1429331599, now seen corresponding path program 1 times [2020-10-28 08:47:15,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:47:15,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [247737078] [2020-10-28 08:47:15,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:47:16,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:47:16,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:16,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:16,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:16,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:16,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:16,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:16,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:16,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:16,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:17,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:20,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:47:20,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 08:47:20,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 08:47:20,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4167 [2020-10-28 08:47:20,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:47:20,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:47:20,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:47:20,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 08:47:20,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:47:20,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 08:47:20,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:47:20,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:47:20,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:20,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:47:20,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:47:20,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:47:20,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 08:47:20,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:47:20,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:47:20,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:47:20,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:47:20,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:47:20,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:47:20,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 08:47:20,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [247737078] [2020-10-28 08:47:20,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 08:47:20,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 08:47:20,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577160285] [2020-10-28 08:47:20,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 08:47:20,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:47:20,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 08:47:20,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 08:47:20,486 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 3 states. [2020-10-28 08:47:20,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:47:20,722 INFO L93 Difference]: Finished difference Result 86 states and 123 transitions. [2020-10-28 08:47:20,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 08:47:20,725 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-10-28 08:47:20,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:47:20,737 INFO L225 Difference]: With dead ends: 86 [2020-10-28 08:47:20,738 INFO L226 Difference]: Without dead ends: 39 [2020-10-28 08:47:20,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 08:47:20,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-28 08:47:20,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-28 08:47:20,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-28 08:47:20,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2020-10-28 08:47:20,821 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 29 [2020-10-28 08:47:20,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:47:20,822 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2020-10-28 08:47:20,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 08:47:20,824 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2020-10-28 08:47:20,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-28 08:47:20,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:47:20,828 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] [2020-10-28 08:47:20,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 08:47:20,829 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:47:20,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:47:20,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1838542495, now seen corresponding path program 1 times [2020-10-28 08:47:20,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:47:20,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634889009] [2020-10-28 08:47:20,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:47:20,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:47:20,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:20,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:20,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:20,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:20,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:21,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:21,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:21,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:21,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:24,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:25,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:47:25,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 08:47:25,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 08:47:25,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 08:47:25,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:47:25,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:47:25,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 08:47:25,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:47:25,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 08:47:25,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:47:25,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:47:25,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:47:25,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:25,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:47:25,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:47:25,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:47:25,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:47:25,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:47:25,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:47:25,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:47:25,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:47:25,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:47:25,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:47:25,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 08:47:25,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634889009] [2020-10-28 08:47:25,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 08:47:25,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 08:47:25,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630635082] [2020-10-28 08:47:25,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 08:47:25,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:47:25,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 08:47:25,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 08:47:25,962 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand 5 states. [2020-10-28 08:47:26,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:47:26,218 INFO L93 Difference]: Finished difference Result 87 states and 111 transitions. [2020-10-28 08:47:26,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 08:47:26,219 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-10-28 08:47:26,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:47:26,220 INFO L225 Difference]: With dead ends: 87 [2020-10-28 08:47:26,220 INFO L226 Difference]: Without dead ends: 57 [2020-10-28 08:47:26,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 08:47:26,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-28 08:47:26,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 48. [2020-10-28 08:47:26,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-28 08:47:26,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2020-10-28 08:47:26,235 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 29 [2020-10-28 08:47:26,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:47:26,235 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2020-10-28 08:47:26,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 08:47:26,235 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2020-10-28 08:47:26,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-28 08:47:26,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:47:26,240 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] [2020-10-28 08:47:26,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 08:47:26,241 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:47:26,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:47:26,242 INFO L82 PathProgramCache]: Analyzing trace with hash 551314867, now seen corresponding path program 1 times [2020-10-28 08:47:26,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:47:26,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1297603814] [2020-10-28 08:47:26,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:47:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:47:26,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:26,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:26,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:26,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:26,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:26,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:26,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:29,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:31,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:47:31,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-28 08:47:31,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 08:47:31,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 08:47:31,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:47:31,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:47:31,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 08:47:31,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:47:31,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 08:47:31,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:47:31,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:47:31,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:47:31,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:31,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:47:31,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:47:31,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:47:31,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:47:31,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:47:31,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:47:31,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:47:31,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:47:31,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:47:31,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:47:31,384 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-28 08:47:31,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1297603814] [2020-10-28 08:47:31,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:47:31,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 08:47:31,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167426040] [2020-10-28 08:47:31,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 08:47:31,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:47:31,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 08:47:31,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 08:47:31,388 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 6 states. [2020-10-28 08:47:31,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:47:31,667 INFO L93 Difference]: Finished difference Result 104 states and 128 transitions. [2020-10-28 08:47:31,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 08:47:31,668 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 47 [2020-10-28 08:47:31,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:47:31,670 INFO L225 Difference]: With dead ends: 104 [2020-10-28 08:47:31,670 INFO L226 Difference]: Without dead ends: 66 [2020-10-28 08:47:31,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-28 08:47:31,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-28 08:47:31,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-28 08:47:31,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-28 08:47:31,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2020-10-28 08:47:31,686 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 47 [2020-10-28 08:47:31,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:47:31,688 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2020-10-28 08:47:31,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 08:47:31,688 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2020-10-28 08:47:31,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-28 08:47:31,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:47:31,692 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:47:31,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 08:47:31,697 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:47:31,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:47:31,698 INFO L82 PathProgramCache]: Analyzing trace with hash 998541701, now seen corresponding path program 2 times [2020-10-28 08:47:31,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:47:31,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359209699] [2020-10-28 08:47:31,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:47:31,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:47:31,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:32,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:33,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:35,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:36,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:36,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:47:36,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 08:47:36,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:47:36,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 08:47:36,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:47:36,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:47:36,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-28 08:47:36,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:47:36,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-28 08:47:36,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:47:39,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:47:39,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:47:39,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:39,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:47:39,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:47:39,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:47:39,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 08:47:39,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:47:39,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:47:39,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:47:39,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:47:39,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:47:39,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:47:39,901 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 08:47:39,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359209699] [2020-10-28 08:47:39,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:47:39,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-28 08:47:39,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301419696] [2020-10-28 08:47:39,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-28 08:47:39,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:47:39,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-28 08:47:39,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1238, Unknown=0, NotChecked=0, Total=1332 [2020-10-28 08:47:39,908 INFO L87 Difference]: Start difference. First operand 66 states and 74 transitions. Second operand 37 states. [2020-10-28 08:47:40,939 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2020-10-28 08:47:43,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:47:43,604 INFO L93 Difference]: Finished difference Result 124 states and 139 transitions. [2020-10-28 08:47:43,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-28 08:47:43,612 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 65 [2020-10-28 08:47:43,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:47:43,613 INFO L225 Difference]: With dead ends: 124 [2020-10-28 08:47:43,614 INFO L226 Difference]: Without dead ends: 118 [2020-10-28 08:47:43,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 566 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=222, Invalid=3084, Unknown=0, NotChecked=0, Total=3306 [2020-10-28 08:47:43,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-28 08:47:43,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 107. [2020-10-28 08:47:43,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-28 08:47:43,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 122 transitions. [2020-10-28 08:47:43,661 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 122 transitions. Word has length 65 [2020-10-28 08:47:43,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:47:43,661 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 122 transitions. [2020-10-28 08:47:43,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-28 08:47:43,662 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 122 transitions. [2020-10-28 08:47:43,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-28 08:47:43,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:47:43,666 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:47:43,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 08:47:43,667 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:47:43,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:47:43,667 INFO L82 PathProgramCache]: Analyzing trace with hash 817790087, now seen corresponding path program 3 times [2020-10-28 08:47:43,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:47:43,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [412809538] [2020-10-28 08:47:43,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:47:43,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:47:43,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:43,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:43,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:43,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:43,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:44,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:48,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:47:48,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 08:47:48,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 08:47:48,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 08:47:48,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:47:48,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:47:48,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 08:47:48,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-28 08:47:48,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 08:47:48,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:47:48,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:47:48,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:47:48,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:48,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:47:48,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:47:48,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:47:48,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:47:48,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:47:48,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:47:48,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:47:48,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:47:48,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:47:48,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:47:48,829 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-28 08:47:48,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [412809538] [2020-10-28 08:47:48,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:47:48,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 08:47:48,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497504446] [2020-10-28 08:47:48,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 08:47:48,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:47:48,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 08:47:48,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-28 08:47:48,832 INFO L87 Difference]: Start difference. First operand 107 states and 122 transitions. Second operand 10 states. [2020-10-28 08:47:49,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:47:49,434 INFO L93 Difference]: Finished difference Result 215 states and 251 transitions. [2020-10-28 08:47:49,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 08:47:49,435 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-10-28 08:47:49,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:47:49,436 INFO L225 Difference]: With dead ends: 215 [2020-10-28 08:47:49,437 INFO L226 Difference]: Without dead ends: 132 [2020-10-28 08:47:49,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2020-10-28 08:47:49,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-28 08:47:49,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 121. [2020-10-28 08:47:49,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-28 08:47:49,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 136 transitions. [2020-10-28 08:47:49,459 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 136 transitions. Word has length 67 [2020-10-28 08:47:49,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:47:49,460 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 136 transitions. [2020-10-28 08:47:49,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 08:47:49,460 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 136 transitions. [2020-10-28 08:47:49,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-28 08:47:49,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:47:49,461 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:47:49,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 08:47:49,462 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:47:49,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:47:49,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1125657145, now seen corresponding path program 4 times [2020-10-28 08:47:49,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:47:49,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1259041829] [2020-10-28 08:47:49,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:47:49,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:47:49,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:49,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:49,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:49,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:49,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:49,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:51,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:54,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:47:54,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 08:47:54,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 08:47:54,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 08:47:54,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:47:54,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:47:54,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 08:47:54,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:47:54,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-28 08:47:54,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:47:54,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:47:54,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:47:54,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:54,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:47:54,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:47:54,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:47:54,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:47:54,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:47:54,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:47:54,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:47:54,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:47:54,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:47:54,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:47:54,607 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-28 08:47:54,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1259041829] [2020-10-28 08:47:54,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:47:54,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 08:47:54,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625809040] [2020-10-28 08:47:54,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 08:47:54,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:47:54,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 08:47:54,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-28 08:47:54,610 INFO L87 Difference]: Start difference. First operand 121 states and 136 transitions. Second operand 10 states. [2020-10-28 08:47:55,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:47:55,046 INFO L93 Difference]: Finished difference Result 205 states and 228 transitions. [2020-10-28 08:47:55,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 08:47:55,047 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-10-28 08:47:55,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:47:55,051 INFO L225 Difference]: With dead ends: 205 [2020-10-28 08:47:55,051 INFO L226 Difference]: Without dead ends: 93 [2020-10-28 08:47:55,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-28 08:47:55,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-28 08:47:55,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 84. [2020-10-28 08:47:55,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-28 08:47:55,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 92 transitions. [2020-10-28 08:47:55,075 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 92 transitions. Word has length 67 [2020-10-28 08:47:55,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:47:55,080 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 92 transitions. [2020-10-28 08:47:55,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 08:47:55,080 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 92 transitions. [2020-10-28 08:47:55,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-28 08:47:55,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:47:55,082 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:47:55,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 08:47:55,082 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:47:55,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:47:55,083 INFO L82 PathProgramCache]: Analyzing trace with hash 854432983, now seen corresponding path program 5 times [2020-10-28 08:47:55,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:47:55,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [595942471] [2020-10-28 08:47:55,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:47:55,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:47:55,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:56,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:57,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:59,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:48:00,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:48:00,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 08:48:00,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:48:00,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5289 [2020-10-28 08:48:00,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:48:00,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:48:00,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 55 [2020-10-28 08:48:00,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:48:00,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 08:48:00,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:48:07,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:48:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:48:07,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:48:07,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:48:07,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:48:07,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:48:07,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:48:07,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:48:07,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:48:07,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:48:07,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:48:07,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:48:07,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:48:07,692 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 08:48:07,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [595942471] [2020-10-28 08:48:07,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:48:07,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2020-10-28 08:48:07,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049275469] [2020-10-28 08:48:07,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-10-28 08:48:07,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:48:07,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-10-28 08:48:07,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=2608, Unknown=0, NotChecked=0, Total=2756 [2020-10-28 08:48:07,696 INFO L87 Difference]: Start difference. First operand 84 states and 92 transitions. Second operand 53 states. [2020-10-28 08:48:09,633 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2020-10-28 08:48:10,058 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2020-10-28 08:48:10,463 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2020-10-28 08:48:12,365 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2020-10-28 08:48:12,612 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-10-28 08:48:13,615 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 35 [2020-10-28 08:48:14,178 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 34 [2020-10-28 08:48:15,159 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 57 [2020-10-28 08:48:17,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:48:17,580 INFO L93 Difference]: Finished difference Result 188 states and 209 transitions. [2020-10-28 08:48:17,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2020-10-28 08:48:17,581 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 83 [2020-10-28 08:48:17,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:48:17,583 INFO L225 Difference]: With dead ends: 188 [2020-10-28 08:48:17,583 INFO L226 Difference]: Without dead ends: 163 [2020-10-28 08:48:17,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1467 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=544, Invalid=7466, Unknown=0, NotChecked=0, Total=8010 [2020-10-28 08:48:17,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-28 08:48:17,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 139. [2020-10-28 08:48:17,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-28 08:48:17,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 154 transitions. [2020-10-28 08:48:17,607 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 154 transitions. Word has length 83 [2020-10-28 08:48:17,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:48:17,608 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 154 transitions. [2020-10-28 08:48:17,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-10-28 08:48:17,608 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 154 transitions. [2020-10-28 08:48:17,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-28 08:48:17,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:48:17,610 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:48:17,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 08:48:17,610 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:48:17,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:48:17,611 INFO L82 PathProgramCache]: Analyzing trace with hash 356250457, now seen corresponding path program 6 times [2020-10-28 08:48:17,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:48:17,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136143745] [2020-10-28 08:48:17,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:48:17,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:48:17,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:48:17,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:48:17,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:48:17,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:48:17,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:48:19,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:48:22,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:48:22,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 08:48:22,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 08:48:22,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 08:48:22,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:48:22,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:48:22,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 08:48:22,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 08:48:22,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 08:48:22,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:48:22,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:48:22,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:48:22,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:48:22,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:48:22,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:48:22,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:48:22,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:48:22,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:48:22,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:48:22,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:48:22,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:48:22,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:48:22,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:48:22,781 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-28 08:48:22,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136143745] [2020-10-28 08:48:22,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:48:22,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 08:48:22,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445085724] [2020-10-28 08:48:22,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 08:48:22,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:48:22,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 08:48:22,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-28 08:48:22,785 INFO L87 Difference]: Start difference. First operand 139 states and 154 transitions. Second operand 12 states. [2020-10-28 08:48:23,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:48:23,957 INFO L93 Difference]: Finished difference Result 287 states and 324 transitions. [2020-10-28 08:48:23,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 08:48:23,959 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 85 [2020-10-28 08:48:23,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:48:23,962 INFO L225 Difference]: With dead ends: 287 [2020-10-28 08:48:23,962 INFO L226 Difference]: Without dead ends: 178 [2020-10-28 08:48:23,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2020-10-28 08:48:23,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-28 08:48:24,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 153. [2020-10-28 08:48:24,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-28 08:48:24,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 168 transitions. [2020-10-28 08:48:24,004 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 168 transitions. Word has length 85 [2020-10-28 08:48:24,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:48:24,004 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 168 transitions. [2020-10-28 08:48:24,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 08:48:24,005 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 168 transitions. [2020-10-28 08:48:24,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-28 08:48:24,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:48:24,007 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:48:24,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 08:48:24,007 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:48:24,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:48:24,013 INFO L82 PathProgramCache]: Analyzing trace with hash 2119785625, now seen corresponding path program 7 times [2020-10-28 08:48:24,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:48:24,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527803171] [2020-10-28 08:48:24,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:48:24,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:48:24,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:48:24,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:48:24,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:48:24,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:48:24,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:48:24,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:48:29,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:48:29,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 08:48:29,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 08:48:29,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 08:48:29,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:48:29,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:48:29,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 08:48:29,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:48:29,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 08:48:29,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:48:29,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:48:29,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:48:29,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:48:29,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:48:29,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:48:29,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:48:29,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:48:29,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:48:29,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:48:29,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:48:29,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:48:29,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:48:29,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:48:29,202 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-28 08:48:29,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527803171] [2020-10-28 08:48:29,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:48:29,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 08:48:29,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058827573] [2020-10-28 08:48:29,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 08:48:29,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:48:29,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 08:48:29,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-28 08:48:29,213 INFO L87 Difference]: Start difference. First operand 153 states and 168 transitions. Second operand 12 states. [2020-10-28 08:48:30,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:48:30,074 INFO L93 Difference]: Finished difference Result 255 states and 278 transitions. [2020-10-28 08:48:30,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 08:48:30,075 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 85 [2020-10-28 08:48:30,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:48:30,077 INFO L225 Difference]: With dead ends: 255 [2020-10-28 08:48:30,077 INFO L226 Difference]: Without dead ends: 111 [2020-10-28 08:48:30,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-28 08:48:30,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-28 08:48:30,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 102. [2020-10-28 08:48:30,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-28 08:48:30,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 110 transitions. [2020-10-28 08:48:30,098 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 110 transitions. Word has length 85 [2020-10-28 08:48:30,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:48:30,099 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 110 transitions. [2020-10-28 08:48:30,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 08:48:30,099 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 110 transitions. [2020-10-28 08:48:30,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-28 08:48:30,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:48:30,100 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:48:30,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 08:48:30,101 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:48:30,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:48:30,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1021657175, now seen corresponding path program 8 times [2020-10-28 08:48:30,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:48:30,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854046006] [2020-10-28 08:48:30,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:48:30,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:48:30,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:48:31,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:48:34,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:48:36,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:48:36,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 08:48:36,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 08:48:36,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6200 [2020-10-28 08:48:36,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:48:36,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:48:36,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 73 [2020-10-28 08:48:36,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:48:36,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 08:48:36,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:48:37,949 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-10-28 08:48:38,117 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2020-10-28 08:48:39,118 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2020-10-28 08:48:48,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:48:48,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:48:48,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:48:48,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:48:48,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:48:48,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:48:48,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:48:48,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:48:48,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:48:48,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:48:48,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:48:48,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:48:48,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:48:48,426 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-28 08:48:48,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854046006] [2020-10-28 08:48:48,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:48:48,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2020-10-28 08:48:48,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156795115] [2020-10-28 08:48:48,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 74 states [2020-10-28 08:48:48,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:48:48,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2020-10-28 08:48:48,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=417, Invalid=4985, Unknown=0, NotChecked=0, Total=5402 [2020-10-28 08:48:48,429 INFO L87 Difference]: Start difference. First operand 102 states and 110 transitions. Second operand 74 states. [2020-10-28 08:48:51,586 WARN L193 SmtUtils]: Spent 2.60 s on a formula simplification. DAG size of input: 103 DAG size of output: 71 [2020-10-28 08:48:51,942 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 45 [2020-10-28 08:48:52,733 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 89 [2020-10-28 08:48:54,332 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 46 [2020-10-28 08:48:55,037 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 94 [2020-10-28 08:48:56,037 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2020-10-28 08:48:56,556 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2020-10-28 08:48:56,984 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 59 [2020-10-28 08:48:58,061 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 107 [2020-10-28 08:49:01,395 WARN L193 SmtUtils]: Spent 800.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 97 [2020-10-28 08:49:02,644 WARN L193 SmtUtils]: Spent 810.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 107 [2020-10-28 08:49:03,435 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 97 [2020-10-28 08:49:03,937 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 68 [2020-10-28 08:49:04,304 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 64 [2020-10-28 08:49:04,643 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 57 [2020-10-28 08:49:04,957 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2020-10-28 08:49:06,063 WARN L193 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 100 [2020-10-28 08:49:06,420 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 52 [2020-10-28 08:49:07,563 WARN L193 SmtUtils]: Spent 822.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 110 [2020-10-28 08:49:11,107 WARN L193 SmtUtils]: Spent 2.93 s on a formula simplification. DAG size of input: 150 DAG size of output: 110 [2020-10-28 08:49:11,948 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 98 [2020-10-28 08:49:12,470 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 72 [2020-10-28 08:49:15,015 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2020-10-28 08:49:15,364 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 56 [2020-10-28 08:49:15,734 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2020-10-28 08:49:16,055 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 49 [2020-10-28 08:49:16,802 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2020-10-28 08:49:18,851 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 36 [2020-10-28 08:49:19,862 WARN L193 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 106 [2020-10-28 08:49:20,847 WARN L193 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 100 [2020-10-28 08:49:21,906 WARN L193 SmtUtils]: Spent 782.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 98 [2020-10-28 08:49:23,137 WARN L193 SmtUtils]: Spent 754.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 108 [2020-10-28 08:49:23,613 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 45 [2020-10-28 08:49:24,457 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 81 [2020-10-28 08:49:25,018 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 39 [2020-10-28 08:49:26,078 WARN L193 SmtUtils]: Spent 714.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 83 [2020-10-28 08:49:26,940 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 66 [2020-10-28 08:49:27,401 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 38 [2020-10-28 08:49:27,758 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 39 [2020-10-28 08:49:28,389 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 66 [2020-10-28 08:49:28,929 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 38 [2020-10-28 08:49:29,312 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 60 [2020-10-28 08:49:29,893 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 51 [2020-10-28 08:49:30,406 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 36 [2020-10-28 08:49:30,826 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 51 [2020-10-28 08:49:31,182 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 42 [2020-10-28 08:49:31,732 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 35 [2020-10-28 08:49:32,205 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 62 [2020-10-28 08:49:37,911 WARN L193 SmtUtils]: Spent 5.26 s on a formula simplification. DAG size of input: 149 DAG size of output: 121 [2020-10-28 08:49:38,325 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 53 [2020-10-28 08:49:39,776 WARN L193 SmtUtils]: Spent 937.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 114 [2020-10-28 08:49:40,158 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 51 [2020-10-28 08:49:41,117 WARN L193 SmtUtils]: Spent 582.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 96 [2020-10-28 08:49:41,790 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 54 [2020-10-28 08:49:42,897 WARN L193 SmtUtils]: Spent 822.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 92 [2020-10-28 08:49:43,739 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 78 [2020-10-28 08:49:44,748 WARN L193 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 70 [2020-10-28 08:49:46,001 WARN L193 SmtUtils]: Spent 871.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 125 [2020-10-28 08:49:46,635 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 73 [2020-10-28 08:49:47,747 WARN L193 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 59 [2020-10-28 08:49:49,297 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 163 DAG size of output: 119 [2020-10-28 08:49:50,667 WARN L193 SmtUtils]: Spent 960.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 107 [2020-10-28 08:49:51,129 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 56 [2020-10-28 08:49:52,254 WARN L193 SmtUtils]: Spent 793.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 70 [2020-10-28 08:49:53,681 WARN L193 SmtUtils]: Spent 729.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 58 [2020-10-28 08:49:54,789 WARN L193 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 99 [2020-10-28 08:49:55,386 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 54 [2020-10-28 08:49:55,788 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 31 [2020-10-28 08:49:57,005 WARN L193 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 70 [2020-10-28 08:49:57,734 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 67 [2020-10-28 08:49:59,335 WARN L193 SmtUtils]: Spent 744.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 69 [2020-10-28 08:49:59,934 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 67 [2020-10-28 08:50:01,373 WARN L193 SmtUtils]: Spent 824.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 72 [2020-10-28 08:50:02,013 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 60 [2020-10-28 08:50:04,063 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 188 DAG size of output: 67 [2020-10-28 08:50:04,549 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2020-10-28 08:50:05,654 WARN L193 SmtUtils]: Spent 547.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 75 [2020-10-28 08:50:06,983 WARN L193 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 85 [2020-10-28 08:50:07,960 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 83 [2020-10-28 08:50:13,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:50:13,979 INFO L93 Difference]: Finished difference Result 270 states and 309 transitions. [2020-10-28 08:50:13,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2020-10-28 08:50:13,981 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 101 [2020-10-28 08:50:13,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:50:13,984 INFO L225 Difference]: With dead ends: 270 [2020-10-28 08:50:13,985 INFO L226 Difference]: Without dead ends: 262 [2020-10-28 08:50:13,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8178 ImplicationChecksByTransitivity, 79.0s TimeCoverageRelationStatistics Valid=3348, Invalid=28871, Unknown=1, NotChecked=0, Total=32220 [2020-10-28 08:50:13,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-10-28 08:50:14,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 216. [2020-10-28 08:50:14,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-28 08:50:14,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 244 transitions. [2020-10-28 08:50:14,023 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 244 transitions. Word has length 101 [2020-10-28 08:50:14,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:50:14,024 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 244 transitions. [2020-10-28 08:50:14,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 74 states. [2020-10-28 08:50:14,024 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 244 transitions. [2020-10-28 08:50:14,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-28 08:50:14,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:50:14,025 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:50:14,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 08:50:14,026 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:50:14,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:50:14,026 INFO L82 PathProgramCache]: Analyzing trace with hash 299604395, now seen corresponding path program 9 times [2020-10-28 08:50:14,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:50:14,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240093217] [2020-10-28 08:50:14,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:50:14,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:50:14,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:50:14,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:50:14,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:50:14,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:50:14,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:50:19,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:50:19,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 08:50:19,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:50:19,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 08:50:19,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:50:19,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:50:19,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 08:50:19,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:50:19,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 08:50:19,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:50:19,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:50:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:50:19,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:50:19,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:50:19,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:50:19,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:50:19,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:50:19,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:50:19,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:50:19,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:50:19,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:50:19,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:50:19,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:50:19,395 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-28 08:50:19,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240093217] [2020-10-28 08:50:19,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:50:19,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 08:50:19,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10977059] [2020-10-28 08:50:19,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 08:50:19,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:50:19,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 08:50:19,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-28 08:50:19,398 INFO L87 Difference]: Start difference. First operand 216 states and 244 transitions. Second operand 14 states. [2020-10-28 08:50:21,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:50:21,175 INFO L93 Difference]: Finished difference Result 404 states and 453 transitions. [2020-10-28 08:50:21,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 08:50:21,177 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 103 [2020-10-28 08:50:21,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:50:21,179 INFO L225 Difference]: With dead ends: 404 [2020-10-28 08:50:21,180 INFO L226 Difference]: Without dead ends: 195 [2020-10-28 08:50:21,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-10-28 08:50:21,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-28 08:50:21,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 178. [2020-10-28 08:50:21,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-28 08:50:21,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 192 transitions. [2020-10-28 08:50:21,199 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 192 transitions. Word has length 103 [2020-10-28 08:50:21,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:50:21,199 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 192 transitions. [2020-10-28 08:50:21,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 08:50:21,200 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 192 transitions. [2020-10-28 08:50:21,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-28 08:50:21,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:50:21,201 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:50:21,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 08:50:21,201 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:50:21,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:50:21,202 INFO L82 PathProgramCache]: Analyzing trace with hash -2052283923, now seen corresponding path program 10 times [2020-10-28 08:50:21,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:50:21,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [749557752] [2020-10-28 08:50:21,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:50:21,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:50:21,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:50:21,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:50:21,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:50:21,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:50:21,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:50:26,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:50:26,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 08:50:26,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:50:26,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 08:50:26,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:50:26,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:50:26,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 08:50:26,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-28 08:50:26,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-28 08:50:26,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:50:26,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:50:26,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:50:26,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:50:26,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:50:26,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:50:26,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:50:26,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:50:26,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:50:26,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:50:26,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:50:26,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:50:26,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:50:26,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:50:26,558 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-10-28 08:50:26,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [749557752] [2020-10-28 08:50:26,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:50:26,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 08:50:26,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446044003] [2020-10-28 08:50:26,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 08:50:26,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:50:26,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 08:50:26,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-28 08:50:26,560 INFO L87 Difference]: Start difference. First operand 178 states and 192 transitions. Second operand 14 states. [2020-10-28 08:50:28,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:50:28,117 INFO L93 Difference]: Finished difference Result 186 states and 200 transitions. [2020-10-28 08:50:28,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 08:50:28,118 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 105 [2020-10-28 08:50:28,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:50:28,120 INFO L225 Difference]: With dead ends: 186 [2020-10-28 08:50:28,120 INFO L226 Difference]: Without dead ends: 120 [2020-10-28 08:50:28,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=142, Invalid=458, Unknown=0, NotChecked=0, Total=600 [2020-10-28 08:50:28,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-28 08:50:28,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2020-10-28 08:50:28,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-28 08:50:28,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 128 transitions. [2020-10-28 08:50:28,133 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 128 transitions. Word has length 105 [2020-10-28 08:50:28,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:50:28,133 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 128 transitions. [2020-10-28 08:50:28,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 08:50:28,133 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 128 transitions. [2020-10-28 08:50:28,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-28 08:50:28,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:50:28,135 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:50:28,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 08:50:28,135 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:50:28,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:50:28,136 INFO L82 PathProgramCache]: Analyzing trace with hash 629608955, now seen corresponding path program 11 times [2020-10-28 08:50:28,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:50:28,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1126449728] [2020-10-28 08:50:28,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:50:28,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:50:28,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:50:30,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:50:33,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:50:33,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-28 08:50:33,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:50:33,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-28 08:50:33,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:50:33,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:50:33,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 91 [2020-10-28 08:50:33,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:50:33,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 08:50:33,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:50:35,438 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 37 [2020-10-28 08:50:35,658 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 35 [2020-10-28 08:50:36,259 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2020-10-28 08:50:36,499 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2020-10-28 08:50:37,616 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2020-10-28 08:50:37,878 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2020-10-28 08:50:38,809 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2020-10-28 08:50:39,142 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2020-10-28 08:50:39,447 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-10-28 08:50:39,770 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2020-10-28 08:50:40,331 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2020-10-28 08:50:40,689 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2020-10-28 08:50:41,036 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2020-10-28 08:50:41,403 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2020-10-28 08:50:41,800 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 46 [2020-10-28 08:50:42,209 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2020-10-28 08:50:42,594 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2020-10-28 08:50:42,977 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2020-10-28 08:50:43,340 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2020-10-28 08:50:43,740 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-10-28 08:50:44,076 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2020-10-28 08:50:44,579 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2020-10-28 08:50:45,031 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 48 [2020-10-28 08:50:45,459 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-10-28 08:50:45,891 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2020-10-28 08:50:46,327 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 51 [2020-10-28 08:50:46,764 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-10-28 08:50:47,191 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2020-10-28 08:50:47,590 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2020-10-28 08:50:47,975 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-10-28 08:50:48,879 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 48 [2020-10-28 08:50:49,354 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2020-10-28 08:50:49,907 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2020-10-28 08:50:50,558 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2020-10-28 08:50:51,054 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2020-10-28 08:50:51,523 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2020-10-28 08:50:51,983 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2020-10-28 08:50:52,456 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 40 [2020-10-28 08:50:53,335 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 41 [2020-10-28 08:50:53,842 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 40