/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-industry-pattern/array_ptr_partial_init.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 04:00:21,676 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 04:00:21,680 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 04:00:21,720 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 04:00:21,721 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 04:00:21,722 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 04:00:21,724 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 04:00:21,727 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 04:00:21,729 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 04:00:21,730 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 04:00:21,731 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 04:00:21,733 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 04:00:21,733 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 04:00:21,735 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 04:00:21,736 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 04:00:21,738 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 04:00:21,739 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 04:00:21,740 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 04:00:21,742 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 04:00:21,745 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 04:00:21,747 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 04:00:21,748 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 04:00:21,750 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 04:00:21,751 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 04:00:21,755 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 04:00:21,755 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 04:00:21,756 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 04:00:21,757 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 04:00:21,757 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 04:00:21,759 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 04:00:21,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 04:00:21,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 04:00:21,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 04:00:21,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 04:00:21,764 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 04:00:21,764 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 04:00:21,765 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 04:00:21,765 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 04:00:21,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 04:00:21,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 04:00:21,769 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 04:00:21,770 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 04:00:21,810 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 04:00:21,811 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 04:00:21,812 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 04:00:21,813 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 04:00:21,813 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 04:00:21,813 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 04:00:21,814 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 04:00:21,814 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 04:00:21,814 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 04:00:21,814 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 04:00:21,815 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 04:00:21,815 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 04:00:21,815 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 04:00:21,815 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 04:00:21,815 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 04:00:21,816 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 04:00:21,816 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 04:00:21,816 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 04:00:21,816 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 04:00:21,816 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 04:00:21,817 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 04:00:21,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:00:21,817 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 04:00:21,817 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 04:00:21,818 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 04:00:21,818 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 04:00:21,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 04:00:21,818 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 04:00:21,818 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 04:00:21,819 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 04:00:22,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 04:00:22,251 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 04:00:22,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 04:00:22,256 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 04:00:22,257 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 04:00:22,258 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-industry-pattern/array_ptr_partial_init.i [2020-10-29 04:00:22,342 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c26a26324/dd2ad53a9aee4d8da12044e171f04711/FLAGe10cfc2c2 [2020-10-29 04:00:22,909 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 04:00:22,909 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-industry-pattern/array_ptr_partial_init.i [2020-10-29 04:00:22,917 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c26a26324/dd2ad53a9aee4d8da12044e171f04711/FLAGe10cfc2c2 [2020-10-29 04:00:23,271 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c26a26324/dd2ad53a9aee4d8da12044e171f04711 [2020-10-29 04:00:23,274 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 04:00:23,282 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 04:00:23,284 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 04:00:23,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 04:00:23,293 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 04:00:23,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:00:23" (1/1) ... [2020-10-29 04:00:23,297 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18a01bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:00:23, skipping insertion in model container [2020-10-29 04:00:23,298 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:00:23" (1/1) ... [2020-10-29 04:00:23,307 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 04:00:23,325 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 04:00:23,496 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:00:23,510 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 04:00:23,530 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:00:23,551 INFO L208 MainTranslator]: Completed translation [2020-10-29 04:00:23,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:00:23 WrapperNode [2020-10-29 04:00:23,552 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 04:00:23,554 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 04:00:23,554 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 04:00:23,554 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 04:00:23,566 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:00:23" (1/1) ... [2020-10-29 04:00:23,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:00:23" (1/1) ... [2020-10-29 04:00:23,575 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:00:23" (1/1) ... [2020-10-29 04:00:23,576 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:00:23" (1/1) ... [2020-10-29 04:00:23,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:00:23" (1/1) ... [2020-10-29 04:00:23,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:00:23" (1/1) ... [2020-10-29 04:00:23,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:00:23" (1/1) ... [2020-10-29 04:00:23,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 04:00:23,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 04:00:23,598 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 04:00:23,598 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 04:00:23,599 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:00:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:00:23,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 04:00:23,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 04:00:23,687 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 04:00:23,688 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 04:00:23,688 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 04:00:23,688 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 04:00:23,689 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 04:00:23,689 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 04:00:23,689 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 04:00:23,689 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 04:00:23,690 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 04:00:23,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 04:00:23,691 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 04:00:23,691 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 04:00:23,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 04:00:23,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-29 04:00:23,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-29 04:00:23,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 04:00:23,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 04:00:23,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 04:00:23,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 04:00:23,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 04:00:23,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 04:00:24,148 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 04:00:24,149 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-29 04:00:24,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:00:24 BoogieIcfgContainer [2020-10-29 04:00:24,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 04:00:24,153 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 04:00:24,153 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 04:00:24,157 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 04:00:24,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:00:23" (1/3) ... [2020-10-29 04:00:24,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c7945b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:00:24, skipping insertion in model container [2020-10-29 04:00:24,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:00:23" (2/3) ... [2020-10-29 04:00:24,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c7945b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:00:24, skipping insertion in model container [2020-10-29 04:00:24,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:00:24" (3/3) ... [2020-10-29 04:00:24,164 INFO L111 eAbstractionObserver]: Analyzing ICFG array_ptr_partial_init.i [2020-10-29 04:00:24,177 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 04:00:24,182 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 04:00:24,198 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 04:00:24,227 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 04:00:24,228 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 04:00:24,228 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 04:00:24,228 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 04:00:24,228 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 04:00:24,228 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 04:00:24,229 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 04:00:24,229 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 04:00:24,249 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-10-29 04:00:24,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-29 04:00:24,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:00:24,257 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:00:24,258 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:00:24,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:00:24,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1906025394, now seen corresponding path program 1 times [2020-10-29 04:00:24,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:00:24,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378387541] [2020-10-29 04:00:24,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:00:24,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:24,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:24,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:24,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:24,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 04:00:24,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:00:24,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-10-29 04:00:24,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:24,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:24,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:00:24,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:00:24,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:00:24,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 04:00:24,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:00:24,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:24,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:24,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:24,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:00:24,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:24,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 04:00:24,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:24,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:24,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:00:24,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:00:24,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:00:24,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 04:00:24,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:00:24,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [378387541] [2020-10-29 04:00:24,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:00:24,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 04:00:24,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132404781] [2020-10-29 04:00:24,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-29 04:00:24,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:00:24,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-29 04:00:24,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-29 04:00:24,909 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-10-29 04:00:25,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:00:25,018 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2020-10-29 04:00:25,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 04:00:25,020 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-29 04:00:25,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:00:25,028 INFO L225 Difference]: With dead ends: 53 [2020-10-29 04:00:25,029 INFO L226 Difference]: Without dead ends: 24 [2020-10-29 04:00:25,032 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 [2020-10-29 04:00:25,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-29 04:00:25,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-29 04:00:25,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-29 04:00:25,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-10-29 04:00:25,077 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 17 [2020-10-29 04:00:25,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:00:25,077 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-10-29 04:00:25,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-29 04:00:25,078 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-10-29 04:00:25,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-29 04:00:25,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:00:25,079 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:00:25,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 04:00:25,081 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:00:25,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:00:25,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1754426942, now seen corresponding path program 1 times [2020-10-29 04:00:25,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:00:25,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2090113772] [2020-10-29 04:00:25,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:00:25,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:25,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:25,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:25,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:25,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 04:00:25,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:00:25,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-29 04:00:25,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:25,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:25,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:00:25,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:00:25,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:00:25,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 04:00:25,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:00:25,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:25,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:25,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:25,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:00:25,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:25,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 04:00:25,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:25,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:25,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:00:25,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:00:25,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:00:25,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:00:25,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:00:25,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2090113772] [2020-10-29 04:00:25,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:00:25,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 04:00:25,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746579179] [2020-10-29 04:00:25,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 04:00:25,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:00:25,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 04:00:25,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 04:00:25,531 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 4 states. [2020-10-29 04:00:25,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:00:25,683 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2020-10-29 04:00:25,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:00:25,683 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-29 04:00:25,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:00:25,685 INFO L225 Difference]: With dead ends: 56 [2020-10-29 04:00:25,685 INFO L226 Difference]: Without dead ends: 40 [2020-10-29 04:00:25,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:00:25,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-29 04:00:25,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 26. [2020-10-29 04:00:25,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-29 04:00:25,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2020-10-29 04:00:25,697 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 17 [2020-10-29 04:00:25,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:00:25,697 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2020-10-29 04:00:25,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 04:00:25,698 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-10-29 04:00:25,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-29 04:00:25,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:00:25,699 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] [2020-10-29 04:00:25,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 04:00:25,699 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:00:25,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:00:25,700 INFO L82 PathProgramCache]: Analyzing trace with hash -999640386, now seen corresponding path program 1 times [2020-10-29 04:00:25,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:00:25,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [558602553] [2020-10-29 04:00:25,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:00:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:25,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:25,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:25,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:26,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:26,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 04:00:26,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:00:26,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1215 [2020-10-29 04:00:26,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:26,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:26,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 04:00:26,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 04:00:26,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 04:00:26,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:00:27,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:00:27,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:27,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:27,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:27,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:00:27,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:27,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:00:27,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:27,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:27,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:00:27,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:00:27,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:00:27,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:27,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 04:00:27,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [558602553] [2020-10-29 04:00:27,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:00:27,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 04:00:27,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309759338] [2020-10-29 04:00:27,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 04:00:27,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:00:27,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 04:00:27,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:00:27,090 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 9 states. [2020-10-29 04:00:27,509 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2020-10-29 04:00:27,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:00:27,641 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2020-10-29 04:00:27,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 04:00:27,642 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-29 04:00:27,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:00:27,644 INFO L225 Difference]: With dead ends: 40 [2020-10-29 04:00:27,644 INFO L226 Difference]: Without dead ends: 36 [2020-10-29 04:00:27,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 04:00:27,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-29 04:00:27,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2020-10-29 04:00:27,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-29 04:00:27,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2020-10-29 04:00:27,658 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 21 [2020-10-29 04:00:27,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:00:27,658 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2020-10-29 04:00:27,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 04:00:27,658 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2020-10-29 04:00:27,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-29 04:00:27,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:00:27,660 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 04:00:27,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 04:00:27,660 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:00:27,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:00:27,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1350306584, now seen corresponding path program 1 times [2020-10-29 04:00:27,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:00:27,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245417671] [2020-10-29 04:00:27,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:00:27,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:27,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:27,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:27,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:27,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:27,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:29,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:29,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 04:00:29,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:00:29,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1617 [2020-10-29 04:00:29,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:29,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:29,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 04:00:29,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:00:29,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 04:00:29,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:00:29,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:00:29,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:29,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:29,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:29,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:00:29,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:29,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 04:00:29,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:29,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:29,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:00:29,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:00:29,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:00:29,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:00:29,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 04:00:29,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:29,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:29,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:29,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:00:29,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:29,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:00:29,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:29,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:29,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:00:29,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:00:29,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:00:29,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:00:29,824 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 04:00:29,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245417671] [2020-10-29 04:00:29,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:00:29,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 04:00:29,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800985627] [2020-10-29 04:00:29,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 04:00:29,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:00:29,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 04:00:29,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-29 04:00:29,827 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 11 states. [2020-10-29 04:00:30,193 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2020-10-29 04:00:30,567 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2020-10-29 04:00:31,014 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2020-10-29 04:00:31,523 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 100 [2020-10-29 04:00:32,022 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 103 [2020-10-29 04:00:32,576 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 107 [2020-10-29 04:00:32,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:00:32,869 INFO L93 Difference]: Finished difference Result 53 states and 56 transitions. [2020-10-29 04:00:32,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 04:00:32,870 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-10-29 04:00:32,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:00:32,875 INFO L225 Difference]: With dead ends: 53 [2020-10-29 04:00:32,876 INFO L226 Difference]: Without dead ends: 34 [2020-10-29 04:00:32,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2020-10-29 04:00:32,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-29 04:00:32,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-10-29 04:00:32,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-29 04:00:32,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2020-10-29 04:00:32,898 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 29 [2020-10-29 04:00:32,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:00:32,898 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2020-10-29 04:00:32,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 04:00:32,898 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2020-10-29 04:00:32,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 04:00:32,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:00:32,899 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:00:32,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 04:00:32,900 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:00:32,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:00:32,903 INFO L82 PathProgramCache]: Analyzing trace with hash 507031094, now seen corresponding path program 2 times [2020-10-29 04:00:32,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:00:32,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486586509] [2020-10-29 04:00:32,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:00:32,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:32,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:32,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:32,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:33,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:33,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:34,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:37,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:37,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 04:00:37,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 04:00:37,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4292 [2020-10-29 04:00:37,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:37,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:37,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 04:00:37,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:00:37,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 04:00:37,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:37,943 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2020-10-29 04:00:38,159 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-10-29 04:00:39,072 WARN L193 SmtUtils]: Spent 783.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 100 [2020-10-29 04:00:40,022 WARN L193 SmtUtils]: Spent 846.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 96 [2020-10-29 04:00:40,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:00:40,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:40,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:40,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:40,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:00:40,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:40,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 04:00:40,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:40,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:40,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:00:40,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:00:40,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:00:40,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:40,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 04:00:40,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:40,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:40,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:40,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:00:40,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:40,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 04:00:40,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:40,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:40,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 04:00:40,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:00:40,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 04:00:40,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:40,395 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 04:00:40,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486586509] [2020-10-29 04:00:40,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:00:40,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 04:00:40,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104561597] [2020-10-29 04:00:40,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 04:00:40,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:00:40,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 04:00:40,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-10-29 04:00:40,401 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 16 states. [2020-10-29 04:00:42,792 WARN L193 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 137 DAG size of output: 125 [2020-10-29 04:00:47,827 WARN L193 SmtUtils]: Spent 4.65 s on a formula simplification. DAG size of input: 122 DAG size of output: 119 [2020-10-29 04:00:51,723 WARN L193 SmtUtils]: Spent 3.47 s on a formula simplification. DAG size of input: 137 DAG size of output: 134 [2020-10-29 04:00:55,331 WARN L193 SmtUtils]: Spent 3.09 s on a formula simplification. DAG size of input: 156 DAG size of output: 154 [2020-10-29 04:00:58,895 WARN L193 SmtUtils]: Spent 3.25 s on a formula simplification. DAG size of input: 159 DAG size of output: 157 [2020-10-29 04:01:02,781 WARN L193 SmtUtils]: Spent 3.62 s on a formula simplification. DAG size of input: 163 DAG size of output: 159 [2020-10-29 04:01:07,168 WARN L193 SmtUtils]: Spent 3.63 s on a formula simplification. DAG size of input: 130 DAG size of output: 127 [2020-10-29 04:01:09,821 WARN L193 SmtUtils]: Spent 1.90 s on a formula simplification. DAG size of input: 112 DAG size of output: 105 [2020-10-29 04:01:13,564 WARN L193 SmtUtils]: Spent 3.27 s on a formula simplification. DAG size of input: 140 DAG size of output: 128 [2020-10-29 04:01:18,403 WARN L193 SmtUtils]: Spent 4.55 s on a formula simplification. DAG size of input: 174 DAG size of output: 162 [2020-10-29 04:01:23,323 WARN L193 SmtUtils]: Spent 4.64 s on a formula simplification. DAG size of input: 178 DAG size of output: 164 [2020-10-29 04:01:24,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:01:24,257 INFO L93 Difference]: Finished difference Result 57 states and 60 transitions. [2020-10-29 04:01:24,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 04:01:24,263 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 31 [2020-10-29 04:01:24,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:01:24,265 INFO L225 Difference]: With dead ends: 57 [2020-10-29 04:01:24,265 INFO L226 Difference]: Without dead ends: 36 [2020-10-29 04:01:24,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 42.9s TimeCoverageRelationStatistics Valid=218, Invalid=904, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 04:01:24,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-29 04:01:24,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-29 04:01:24,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-29 04:01:24,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2020-10-29 04:01:24,282 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 31 [2020-10-29 04:01:24,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:01:24,283 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2020-10-29 04:01:24,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 04:01:24,284 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2020-10-29 04:01:24,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-29 04:01:24,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:01:24,286 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:01:24,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 04:01:24,286 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:01:24,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:01:24,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1868104148, now seen corresponding path program 3 times [2020-10-29 04:01:24,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:01:24,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1102397236] [2020-10-29 04:01:24,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:01:24,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:24,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:24,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:24,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:24,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:25,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:27,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:29,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:29,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 04:01:29,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 04:01:29,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 04:01:29,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:29,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:29,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 04:01:29,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 04:01:29,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 04:01:29,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:29,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:01:29,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:29,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:29,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:29,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:01:29,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:29,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:01:29,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:29,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:29,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:01:29,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:01:29,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:01:29,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:29,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 04:01:29,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:29,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:29,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:29,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:01:29,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:29,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:01:29,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:29,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:29,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:01:29,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:01:29,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:01:29,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:29,568 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 04:01:29,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1102397236] [2020-10-29 04:01:29,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:01:29,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 04:01:29,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385421068] [2020-10-29 04:01:29,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 04:01:29,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:01:29,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 04:01:29,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-29 04:01:29,571 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 11 states. [2020-10-29 04:01:30,160 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-10-29 04:01:30,339 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2020-10-29 04:01:30,599 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-10-29 04:01:30,763 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2020-10-29 04:01:31,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:01:31,023 INFO L93 Difference]: Finished difference Result 76 states and 81 transitions. [2020-10-29 04:01:31,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 04:01:31,024 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-10-29 04:01:31,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:01:31,026 INFO L225 Difference]: With dead ends: 76 [2020-10-29 04:01:31,026 INFO L226 Difference]: Without dead ends: 49 [2020-10-29 04:01:31,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2020-10-29 04:01:31,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-29 04:01:31,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2020-10-29 04:01:31,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-29 04:01:31,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2020-10-29 04:01:31,038 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 33 [2020-10-29 04:01:31,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:01:31,038 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2020-10-29 04:01:31,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 04:01:31,038 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2020-10-29 04:01:31,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-29 04:01:31,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:01:31,040 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:01:31,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 04:01:31,040 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:01:31,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:01:31,041 INFO L82 PathProgramCache]: Analyzing trace with hash 664533644, now seen corresponding path program 4 times [2020-10-29 04:01:31,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:01:31,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299681667] [2020-10-29 04:01:31,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:01:31,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:31,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:31,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:31,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:31,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:31,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:32,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:34,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:34,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:35,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:35,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:35,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:36,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:36,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 04:01:36,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 04:01:36,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-29 04:01:36,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:36,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:36,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 04:01:36,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:01:36,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 04:01:36,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:36,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:01:36,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:36,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:36,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:36,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:01:36,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:36,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:01:36,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:36,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:36,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:01:36,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:01:36,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:01:36,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:36,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-29 04:01:36,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:36,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:36,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:36,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:01:36,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:36,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:01:36,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:36,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:36,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:01:36,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:01:36,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:01:36,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:36,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:01:36,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:36,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:36,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:36,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:01:36,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:36,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:01:36,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:36,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:36,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:01:36,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:01:36,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:01:36,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:36,783 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 04:01:36,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299681667] [2020-10-29 04:01:36,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:01:36,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 04:01:36,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278391631] [2020-10-29 04:01:36,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 04:01:36,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:01:36,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 04:01:36,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-29 04:01:36,787 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 15 states. [2020-10-29 04:01:38,214 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2020-10-29 04:01:38,452 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2020-10-29 04:01:38,708 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2020-10-29 04:01:39,456 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 04:01:39,984 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 04:01:40,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:01:40,757 INFO L93 Difference]: Finished difference Result 117 states and 121 transitions. [2020-10-29 04:01:40,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-29 04:01:40,759 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 43 [2020-10-29 04:01:40,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:01:40,761 INFO L225 Difference]: With dead ends: 117 [2020-10-29 04:01:40,761 INFO L226 Difference]: Without dead ends: 90 [2020-10-29 04:01:40,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=444, Invalid=1362, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 04:01:40,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-29 04:01:40,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 50. [2020-10-29 04:01:40,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-29 04:01:40,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2020-10-29 04:01:40,776 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 43 [2020-10-29 04:01:40,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:01:40,776 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2020-10-29 04:01:40,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 04:01:40,777 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2020-10-29 04:01:40,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-29 04:01:40,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:01:40,778 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:01:40,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 04:01:40,778 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:01:40,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:01:40,779 INFO L82 PathProgramCache]: Analyzing trace with hash -2002626488, now seen corresponding path program 5 times [2020-10-29 04:01:40,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:01:40,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [815138685] [2020-10-29 04:01:40,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:01:40,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:40,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:40,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:41,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:41,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:41,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:42,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:42,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:42,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:42,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:43,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:45,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:45,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 04:01:45,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 04:01:45,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 04:01:45,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:45,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:45,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 04:01:45,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:01:45,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 04:01:45,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 04:01:46,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:01:46,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:46,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:46,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:46,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:01:46,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:46,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:01:46,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:46,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:46,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:01:46,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:01:46,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:01:46,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:46,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 04:01:46,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:46,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:46,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:46,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:01:46,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:46,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:01:46,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:46,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:46,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:01:46,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:01:46,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:01:46,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:46,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 04:01:46,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:46,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:46,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:46,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:01:46,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:46,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 04:01:46,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:46,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:46,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:01:46,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:01:46,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:01:46,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 04:01:46,783 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 13 proven. 31 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 04:01:46,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [815138685] [2020-10-29 04:01:46,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:01:46,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 04:01:46,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784389570] [2020-10-29 04:01:46,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 04:01:46,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:01:46,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 04:01:46,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-29 04:01:46,789 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand 17 states. [2020-10-29 04:01:47,137 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2020-10-29 04:01:47,726 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2020-10-29 04:01:47,909 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2020-10-29 04:01:48,135 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-10-29 04:01:48,769 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2020-10-29 04:01:48,997 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-10-29 04:01:49,238 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2020-10-29 04:01:52,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:01:52,068 INFO L93 Difference]: Finished difference Result 145 states and 149 transitions. [2020-10-29 04:01:52,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-29 04:01:52,070 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 47 [2020-10-29 04:01:52,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:01:52,072 INFO L225 Difference]: With dead ends: 145 [2020-10-29 04:01:52,072 INFO L226 Difference]: Without dead ends: 118 [2020-10-29 04:01:52,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 14 SyntacticMatches, 4 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=662, Invalid=1990, Unknown=0, NotChecked=0, Total=2652 [2020-10-29 04:01:52,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-29 04:01:52,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 54. [2020-10-29 04:01:52,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-29 04:01:52,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2020-10-29 04:01:52,088 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 47 [2020-10-29 04:01:52,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:01:52,089 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2020-10-29 04:01:52,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 04:01:52,089 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2020-10-29 04:01:52,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-29 04:01:52,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:01:52,090 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:01:52,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 04:01:52,091 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:01:52,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:01:52,091 INFO L82 PathProgramCache]: Analyzing trace with hash 529233924, now seen corresponding path program 6 times [2020-10-29 04:01:52,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:01:52,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074140628] [2020-10-29 04:01:52,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:01:52,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:52,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:52,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:52,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:52,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:52,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:54,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:55,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:56,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:56,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:56,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:57,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:57,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 04:01:57,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 04:01:57,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 04:01:57,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:57,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:57,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 04:01:57,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:01:57,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 04:01:57,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:58,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:01:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:58,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:58,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:58,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:01:58,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:58,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:01:58,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:58,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:58,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:01:58,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:01:58,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:01:58,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:58,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:01:58,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:58,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:58,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:58,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:01:58,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:58,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:01:58,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:58,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:58,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:01:58,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:01:58,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:01:58,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:58,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 04:01:58,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:58,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:58,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:58,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:01:58,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:58,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:01:58,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:58,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:58,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:01:58,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:01:58,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:01:58,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:58,393 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 13 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 04:01:58,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074140628] [2020-10-29 04:01:58,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:01:58,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 04:01:58,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108534416] [2020-10-29 04:01:58,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 04:01:58,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:01:58,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 04:01:58,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2020-10-29 04:01:58,396 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand 19 states. [2020-10-29 04:01:58,695 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2020-10-29 04:01:59,305 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2020-10-29 04:01:59,520 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2020-10-29 04:01:59,790 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2020-10-29 04:02:00,421 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2020-10-29 04:02:00,686 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2020-10-29 04:02:00,959 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2020-10-29 04:02:01,616 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-29 04:02:02,263 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 04:02:03,207 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 04:02:03,572 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-29 04:02:04,269 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 04:02:04,811 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 04:02:05,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:02:05,243 INFO L93 Difference]: Finished difference Result 173 states and 177 transitions. [2020-10-29 04:02:05,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-29 04:02:05,245 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 51 [2020-10-29 04:02:05,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:02:05,248 INFO L225 Difference]: With dead ends: 173 [2020-10-29 04:02:05,248 INFO L226 Difference]: Without dead ends: 146 [2020-10-29 04:02:05,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 16 SyntacticMatches, 6 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 992 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=912, Invalid=2628, Unknown=0, NotChecked=0, Total=3540 [2020-10-29 04:02:05,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-29 04:02:05,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 58. [2020-10-29 04:02:05,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-29 04:02:05,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2020-10-29 04:02:05,266 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 51 [2020-10-29 04:02:05,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:02:05,267 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2020-10-29 04:02:05,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 04:02:05,267 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2020-10-29 04:02:05,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-29 04:02:05,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:02:05,268 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:02:05,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 04:02:05,269 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:02:05,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:02:05,269 INFO L82 PathProgramCache]: Analyzing trace with hash -651798080, now seen corresponding path program 7 times [2020-10-29 04:02:05,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:02:05,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773068560] [2020-10-29 04:02:05,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:02:05,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:05,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:05,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:05,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:05,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:06,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:07,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:09,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:10,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:10,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:10,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-29 04:02:10,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 04:02:10,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5082 [2020-10-29 04:02:10,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:10,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:10,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 04:02:10,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:02:10,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 04:02:10,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:11,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:02:11,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:11,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:11,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:11,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:02:11,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:02:11,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:02:11,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:11,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:11,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:02:11,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:02:11,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:02:11,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:11,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 04:02:11,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:11,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:11,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:11,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:02:11,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:02:11,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:02:11,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:11,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:11,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:02:11,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:02:11,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:02:11,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:11,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 04:02:11,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:11,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:11,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:11,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:02:11,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:02:11,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:02:11,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:11,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:11,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:02:11,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:02:11,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:02:11,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:11,830 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 13 proven. 87 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 04:02:11,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773068560] [2020-10-29 04:02:11,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:02:11,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 04:02:11,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542368171] [2020-10-29 04:02:11,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 04:02:11,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:02:11,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 04:02:11,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2020-10-29 04:02:11,833 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 21 states. [2020-10-29 04:02:12,121 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2020-10-29 04:02:12,756 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2020-10-29 04:02:12,916 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-10-29 04:02:13,103 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2020-10-29 04:02:13,684 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2020-10-29 04:02:13,944 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-10-29 04:02:14,177 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-10-29 04:02:18,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:02:18,760 INFO L93 Difference]: Finished difference Result 201 states and 205 transitions. [2020-10-29 04:02:18,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-10-29 04:02:18,762 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 55 [2020-10-29 04:02:18,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:02:18,765 INFO L225 Difference]: With dead ends: 201 [2020-10-29 04:02:18,765 INFO L226 Difference]: Without dead ends: 174 [2020-10-29 04:02:18,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 18 SyntacticMatches, 8 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1330 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=1202, Invalid=3354, Unknown=0, NotChecked=0, Total=4556 [2020-10-29 04:02:18,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-29 04:02:18,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 62. [2020-10-29 04:02:18,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-29 04:02:18,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2020-10-29 04:02:18,781 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 55 [2020-10-29 04:02:18,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:02:18,781 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions. [2020-10-29 04:02:18,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 04:02:18,782 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions. [2020-10-29 04:02:18,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-29 04:02:18,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:02:18,788 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:02:18,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 04:02:18,790 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:02:18,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:02:18,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1564344964, now seen corresponding path program 8 times [2020-10-29 04:02:18,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:02:18,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [779628240] [2020-10-29 04:02:18,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:02:18,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:18,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:18,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:18,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:19,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:20,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:20,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:23,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:23,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 04:02:23,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 04:02:23,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 04:02:23,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:23,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:23,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 04:02:23,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:02:23,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 04:02:23,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:25,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:02:25,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:25,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:25,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:25,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:02:25,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:02:25,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:02:25,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:25,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:25,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:02:25,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:02:25,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:02:25,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:25,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 04:02:25,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:25,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:25,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:25,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:02:25,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:02:25,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:02:25,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:25,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:25,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:02:25,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:02:25,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:02:25,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:25,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 04:02:25,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:25,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:25,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:25,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:02:25,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:02:25,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:02:25,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:25,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:25,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:02:25,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:02:25,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:02:25,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:25,702 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 13 proven. 127 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 04:02:25,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [779628240] [2020-10-29 04:02:25,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:02:25,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 04:02:25,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771359947] [2020-10-29 04:02:25,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 04:02:25,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:02:25,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 04:02:25,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2020-10-29 04:02:25,705 INFO L87 Difference]: Start difference. First operand 62 states and 64 transitions. Second operand 23 states. [2020-10-29 04:02:25,996 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2020-10-29 04:02:26,625 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2020-10-29 04:02:26,845 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2020-10-29 04:02:27,108 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2020-10-29 04:02:27,715 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2020-10-29 04:02:27,975 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2020-10-29 04:02:28,261 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2020-10-29 04:02:28,989 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 04:02:29,737 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-10-29 04:02:29,910 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 04:02:30,381 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 04:02:30,742 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-29 04:02:30,908 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 04:02:31,407 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 04:02:31,929 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 04:02:32,462 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 04:02:33,006 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 04:02:33,586 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 04:02:33,983 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-29 04:02:34,174 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 04:02:34,622 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-10-29 04:02:34,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:02:34,695 INFO L93 Difference]: Finished difference Result 229 states and 233 transitions. [2020-10-29 04:02:34,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2020-10-29 04:02:34,697 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 59 [2020-10-29 04:02:34,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:02:34,699 INFO L225 Difference]: With dead ends: 229 [2020-10-29 04:02:34,700 INFO L226 Difference]: Without dead ends: 202 [2020-10-29 04:02:34,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 20 SyntacticMatches, 10 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1716 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=1532, Invalid=4168, Unknown=0, NotChecked=0, Total=5700 [2020-10-29 04:02:34,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-29 04:02:34,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 66. [2020-10-29 04:02:34,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-29 04:02:34,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 68 transitions. [2020-10-29 04:02:34,719 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 68 transitions. Word has length 59 [2020-10-29 04:02:34,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:02:34,719 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 68 transitions. [2020-10-29 04:02:34,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 04:02:34,719 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 68 transitions. [2020-10-29 04:02:34,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-29 04:02:34,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:02:34,721 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:02:34,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 04:02:34,721 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:02:34,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:02:34,722 INFO L82 PathProgramCache]: Analyzing trace with hash 707617592, now seen corresponding path program 9 times [2020-10-29 04:02:34,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:02:34,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753382634] [2020-10-29 04:02:34,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:02:34,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:34,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:34,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:35,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:35,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:35,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:36,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:39,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:39,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 04:02:39,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 04:02:39,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 04:02:39,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:39,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:39,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-29 04:02:39,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:02:39,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 04:02:39,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:41,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:02:41,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:41,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:41,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:41,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:02:41,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:02:41,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 04:02:41,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:41,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:41,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:02:41,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:02:41,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:02:41,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:41,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 04:02:41,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:41,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:41,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:41,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:02:41,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:02:41,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:02:41,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:41,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:41,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:02:41,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:02:41,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:02:41,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:41,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 04:02:41,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:41,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:41,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:41,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:02:41,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:02:41,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:02:41,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:41,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:41,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:02:41,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:02:41,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:02:41,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:41,153 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 8 proven. 174 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 04:02:41,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753382634] [2020-10-29 04:02:41,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:02:41,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 04:02:41,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934209949] [2020-10-29 04:02:41,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 04:02:41,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:02:41,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 04:02:41,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=328, Unknown=0, NotChecked=0, Total=506 [2020-10-29 04:02:41,155 INFO L87 Difference]: Start difference. First operand 66 states and 68 transitions. Second operand 23 states. [2020-10-29 04:02:47,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:02:47,547 INFO L93 Difference]: Finished difference Result 244 states and 248 transitions. [2020-10-29 04:02:47,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-10-29 04:02:47,548 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 63 [2020-10-29 04:02:47,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:02:47,551 INFO L225 Difference]: With dead ends: 244 [2020-10-29 04:02:47,551 INFO L226 Difference]: Without dead ends: 217 [2020-10-29 04:02:47,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1621 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=1569, Invalid=3543, Unknown=0, NotChecked=0, Total=5112 [2020-10-29 04:02:47,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-29 04:02:47,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 70. [2020-10-29 04:02:47,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-29 04:02:47,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 72 transitions. [2020-10-29 04:02:47,570 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 72 transitions. Word has length 63 [2020-10-29 04:02:47,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:02:47,571 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 72 transitions. [2020-10-29 04:02:47,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 04:02:47,571 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 72 transitions. [2020-10-29 04:02:47,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-29 04:02:47,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:02:47,573 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:02:47,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 04:02:47,573 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:02:47,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:02:47,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1648915724, now seen corresponding path program 10 times [2020-10-29 04:02:47,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:02:47,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660427278] [2020-10-29 04:02:47,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:02:47,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:47,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:47,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:47,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:48,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:49,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:50,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:52,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:52,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 04:02:52,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 04:02:52,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 04:02:52,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:52,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:52,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-29 04:02:52,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:02:52,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 04:02:52,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:54,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:02:54,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:54,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:54,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:54,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:02:54,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:02:54,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:02:54,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:54,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:54,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:02:54,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:02:54,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:02:54,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:54,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 04:02:54,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:54,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:54,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:54,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:02:54,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:02:54,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:02:54,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:54,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:54,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:02:54,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:02:54,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:02:54,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:54,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 04:02:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:54,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:54,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:54,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:02:54,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:02:54,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:02:54,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:54,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:54,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:02:54,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:02:54,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:02:54,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:55,002 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 8 proven. 230 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 04:02:55,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660427278] [2020-10-29 04:02:55,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:02:55,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 04:02:55,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890900682] [2020-10-29 04:02:55,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 04:02:55,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:02:55,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 04:02:55,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=401, Unknown=0, NotChecked=0, Total=600 [2020-10-29 04:02:55,005 INFO L87 Difference]: Start difference. First operand 70 states and 72 transitions. Second operand 25 states. [2020-10-29 04:02:55,191 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2020-10-29 04:02:55,670 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2020-10-29 04:02:55,824 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2020-10-29 04:03:02,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:03:02,932 INFO L93 Difference]: Finished difference Result 270 states and 273 transitions. [2020-10-29 04:03:02,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2020-10-29 04:03:02,934 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 67 [2020-10-29 04:03:02,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:03:02,938 INFO L225 Difference]: With dead ends: 270 [2020-10-29 04:03:02,938 INFO L226 Difference]: Without dead ends: 243 [2020-10-29 04:03:02,941 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 25 SyntacticMatches, 14 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1990 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=1871, Invalid=4609, Unknown=0, NotChecked=0, Total=6480 [2020-10-29 04:03:02,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-10-29 04:03:02,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 72. [2020-10-29 04:03:02,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-29 04:03:02,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 74 transitions. [2020-10-29 04:03:02,958 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 74 transitions. Word has length 67 [2020-10-29 04:03:02,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:03:02,959 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 74 transitions. [2020-10-29 04:03:02,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 04:03:02,959 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 74 transitions. [2020-10-29 04:03:02,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-29 04:03:02,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:03:02,960 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:03:02,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 04:03:02,961 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:03:02,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:03:02,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1310468206, now seen corresponding path program 11 times [2020-10-29 04:03:02,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:03:02,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [722532728] [2020-10-29 04:03:02,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:03:02,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:03,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:03,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:03,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:04,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:04,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:05,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:06,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:07,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:07,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:07,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 04:03:07,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 04:03:07,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 04:03:07,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:07,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:07,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-29 04:03:07,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:03:07,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 04:03:07,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:10,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:03:10,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:10,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:10,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:10,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:03:10,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:10,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:03:10,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:10,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:10,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:10,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:10,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:10,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:10,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 04:03:10,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:10,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:10,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:10,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:03:10,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:10,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:03:10,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:10,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:10,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:03:10,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:03:10,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:03:10,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:10,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 04:03:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:10,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:10,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:10,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:03:10,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:10,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:03:10,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:10,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:10,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:10,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:03:10,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:10,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:10,951 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 8 proven. 261 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 04:03:10,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [722532728] [2020-10-29 04:03:10,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:03:10,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 04:03:10,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372074353] [2020-10-29 04:03:10,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 04:03:10,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:03:10,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 04:03:10,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=431, Unknown=0, NotChecked=0, Total=650 [2020-10-29 04:03:10,954 INFO L87 Difference]: Start difference. First operand 72 states and 74 transitions. Second operand 26 states. [2020-10-29 04:03:11,175 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2020-10-29 04:03:11,710 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2020-10-29 04:03:11,899 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-29 04:03:19,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:03:19,344 INFO L93 Difference]: Finished difference Result 284 states and 287 transitions. [2020-10-29 04:03:19,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2020-10-29 04:03:19,345 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 69 [2020-10-29 04:03:19,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:03:19,348 INFO L225 Difference]: With dead ends: 284 [2020-10-29 04:03:19,348 INFO L226 Difference]: Without dead ends: 257 [2020-10-29 04:03:19,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 26 SyntacticMatches, 15 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2215 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=2068, Invalid=5072, Unknown=0, NotChecked=0, Total=7140 [2020-10-29 04:03:19,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-10-29 04:03:19,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 74. [2020-10-29 04:03:19,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-29 04:03:19,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 76 transitions. [2020-10-29 04:03:19,368 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 76 transitions. Word has length 69 [2020-10-29 04:03:19,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:03:19,368 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 76 transitions. [2020-10-29 04:03:19,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 04:03:19,369 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 76 transitions. [2020-10-29 04:03:19,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-29 04:03:19,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:03:19,370 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:03:19,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 04:03:19,370 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:03:19,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:03:19,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1815049392, now seen corresponding path program 12 times [2020-10-29 04:03:19,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:03:19,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030014988] [2020-10-29 04:03:19,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:03:19,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:19,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:19,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:20,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:21,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:24,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:24,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 04:03:24,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:03:24,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-29 04:03:24,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:24,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:24,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-10-29 04:03:24,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:03:24,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 04:03:24,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:27,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:03:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:27,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:27,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:27,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:03:27,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:27,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:03:27,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:27,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:27,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:27,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:27,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:27,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:27,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 04:03:27,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:27,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:27,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:27,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:03:27,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:27,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:03:27,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:27,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:27,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:03:27,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:27,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:03:27,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:27,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-29 04:03:27,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:27,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:27,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:27,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:03:27,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:27,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:03:27,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:27,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:27,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:03:27,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:03:27,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:03:27,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:27,918 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 13 proven. 295 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 04:03:27,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030014988] [2020-10-29 04:03:27,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:03:27,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 04:03:27,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431341521] [2020-10-29 04:03:27,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 04:03:27,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:03:27,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 04:03:27,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=550, Unknown=0, NotChecked=0, Total=812 [2020-10-29 04:03:27,921 INFO L87 Difference]: Start difference. First operand 74 states and 76 transitions. Second operand 29 states. [2020-10-29 04:03:28,267 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2020-10-29 04:03:29,089 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2020-10-29 04:03:29,309 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-10-29 04:03:29,582 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2020-10-29 04:03:29,943 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-10-29 04:03:30,208 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2020-10-29 04:03:30,458 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2020-10-29 04:03:30,723 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2020-10-29 04:03:31,497 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 04:03:31,982 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 04:03:32,451 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 04:03:32,933 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 04:03:33,422 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 04:03:33,943 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 04:03:34,480 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 04:03:35,022 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 04:03:35,622 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 04:03:36,015 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-29 04:03:36,191 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 04:03:36,758 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 04:03:37,452 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 04:03:38,109 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 04:03:38,803 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 04:03:39,462 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 04:03:39,950 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-29 04:03:40,166 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 04:03:40,630 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-29 04:03:40,855 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 04:03:41,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:03:41,374 INFO L93 Difference]: Finished difference Result 313 states and 317 transitions. [2020-10-29 04:03:41,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2020-10-29 04:03:41,377 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 71 [2020-10-29 04:03:41,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:03:41,379 INFO L225 Difference]: With dead ends: 313 [2020-10-29 04:03:41,379 INFO L226 Difference]: Without dead ends: 286 [2020-10-29 04:03:41,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 26 SyntacticMatches, 16 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3162 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=2762, Invalid=7138, Unknown=0, NotChecked=0, Total=9900 [2020-10-29 04:03:41,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-10-29 04:03:41,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 78. [2020-10-29 04:03:41,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-29 04:03:41,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2020-10-29 04:03:41,401 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 71 [2020-10-29 04:03:41,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:03:41,402 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2020-10-29 04:03:41,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 04:03:41,402 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2020-10-29 04:03:41,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-29 04:03:41,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:03:41,403 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:03:41,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 04:03:41,403 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:03:41,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:03:41,404 INFO L82 PathProgramCache]: Analyzing trace with hash 82059372, now seen corresponding path program 13 times [2020-10-29 04:03:41,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:03:41,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [14210322] [2020-10-29 04:03:41,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:03:41,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:41,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:41,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:41,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:46,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:46,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-29 04:03:46,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:03:46,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-10-29 04:03:46,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:46,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:46,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 49 [2020-10-29 04:03:46,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:03:46,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 04:03:46,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0